1cnb - Revision history

OCA at 15:40, 13 March 2024

2024-03-13T15:40:58Z

←Older revision		Revision as of 15:40, 13 March 2024
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	<StructureSection load='1cnb' size='340' side='right'caption='[[1cnb]], [[Resolution\|resolution]] 2.35Å' scene=''>		<StructureSection load='1cnb' size='340' side='right'caption='[[1cnb]], [[Resolution\|resolution]] 2.35Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[1cnb]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/~~Human Human~~]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1CNB FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[1cnb]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1CNB FirstGlance]. <br>
-	</td></tr><tr id='~~ligand~~'><td class="sblockLbl"><b>[[~~Ligand~~\|~~Ligands~~:]]</b></td><td class="sblockDat" id="~~ligandDat~~">~~<scene name='pdbligand=BME:BETA~~-~~MERCAPTOETHANOL'>BME</scene>~~</td></tr>	+	</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models\|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution\|Resolution]] 2.35Å</td></tr>
-	<tr id='~~activity~~'><td class="sblockLbl"><b>~~Activity~~:</b></td><td class="sblockDat"><~~span class~~='~~plainlinks~~'>~~[https://en.wikipedia.org/wiki/Carbonate_dehydratase Carbonate dehydratase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.1 4.2.1.1]~~ </~~span~~></td></tr>	+	<tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene></td></tr>
	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1cnb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cnb OCA], [https://pdbe.org/1cnb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1cnb RCSB], [https://www.ebi.ac.uk/pdbsum/1cnb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1cnb ProSAT]</span></td></tr>		<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1cnb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cnb OCA], [https://pdbe.org/1cnb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1cnb RCSB], [https://www.ebi.ac.uk/pdbsum/1cnb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1cnb ProSAT]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==
-	[[https://www.uniprot.org/uniprot/CAH2_HUMAN CAH2_HUMAN]] Defects in CA2 are the cause of osteopetrosis autosomal recessive type 3 (OPTB3) [MIM:[https://omim.org/entry/259730 259730]]; also known as osteopetrosis with renal tubular acidosis, carbonic anhydrase II deficiency syndrome, Guibaud-Vainsel syndrome or marble brain disease. Osteopetrosis is a rare genetic disease characterized by abnormally dense bone, due to defective resorption of immature bone. The disorder occurs in two forms: a severe autosomal recessive form occurring in utero, infancy, or childhood, and a benign autosomal dominant form occurring in adolescence or adulthood. Autosomal recessive osteopetrosis is usually associated with normal or elevated amount of non-functional osteoclasts. OPTB3 is associated with renal tubular acidosis, cerebral calcification (marble brain disease) and in some cases with mental retardation.<ref>PMID:1928091</ref> <ref>PMID:1542674</ref> <ref>PMID:8834238</ref> <ref>PMID:9143915</ref> <ref>PMID:15300855</ref>	+	[https://www.uniprot.org/uniprot/CAH2_HUMAN CAH2_HUMAN] Defects in CA2 are the cause of osteopetrosis autosomal recessive type 3 (OPTB3) [MIM:[https://omim.org/entry/259730 259730]; also known as osteopetrosis with renal tubular acidosis, carbonic anhydrase II deficiency syndrome, Guibaud-Vainsel syndrome or marble brain disease. Osteopetrosis is a rare genetic disease characterized by abnormally dense bone, due to defective resorption of immature bone. The disorder occurs in two forms: a severe autosomal recessive form occurring in utero, infancy, or childhood, and a benign autosomal dominant form occurring in adolescence or adulthood. Autosomal recessive osteopetrosis is usually associated with normal or elevated amount of non-functional osteoclasts. OPTB3 is associated with renal tubular acidosis, cerebral calcification (marble brain disease) and in some cases with mental retardation.<ref>PMID:1928091</ref> <ref>PMID:1542674</ref> <ref>PMID:8834238</ref> <ref>PMID:9143915</ref> <ref>PMID:15300855</ref>
	== Function ==		== Function ==
-	[[https://www.uniprot.org/uniprot/CAH2_HUMAN CAH2_HUMAN]] Essential for bone resorption and osteoclast differentiation (By similarity). Reversible hydration of carbon dioxide. Can hydrate cyanamide to urea. Involved in the regulation of fluid secretion into the anterior chamber of the eye.<ref>PMID:10550681</ref> <ref>PMID:11831900</ref>	+	[https://www.uniprot.org/uniprot/CAH2_HUMAN CAH2_HUMAN] Essential for bone resorption and osteoclast differentiation (By similarity). Reversible hydration of carbon dioxide. Can hydrate cyanamide to urea. Involved in the regulation of fluid secretion into the anterior chamber of the eye.<ref>PMID:10550681</ref> <ref>PMID:11831900</ref>
	== Evolutionary Conservation ==		== Evolutionary Conservation ==
	[[Image:Consurf_key_small.gif\|200px\|right]]		[[Image:Consurf_key_small.gif\|200px\|right]]
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	</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary\|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1cnb ConSurf].		</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary\|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1cnb ConSurf].
	<div style="clear:both"></div>		<div style="clear:both"></div>
-	<div style="background-color:#fffaf0;">
-	== Publication Abstract from PubMed ==
-	In order to probe the structural importance of zinc ligands in the active site of human carbonic anhydrase II (CAII), we have determined the three-dimensional structures of H94C (in metal-bound form), H94C-BME (i.e., disulfide-linked with beta-mercaptoethanol), H94A, H96C, H119C, and H119D variants of CAII by X-ray crystallographic methods at resolutions of 2.2, 2.35, 2.25, 2.3, 2.2, and 2.25 A, respectively. Each variant crystallizes isomorphously with the wild-type enzyme, in which zinc is tetrahedrally coordinated by H94, H96, H119, and hydroxide ion. The structure of H94C CAII reveals the successful substitution of the naturally occurring histidine zinc ligand by a cysteine thiolate, and metal coordination by C94 is facilitated by the plastic structural response of the beta-sheet superstructure. Importantly, the resulting structure represents the catalytically active form of the enzyme reported previously [Alexander, R. S., Kiefer, L. L., Fierke, C. A., & Christianson, D. W. (1993) Biochemistry 32, 1510-1518]. Contrastingly, the structure of H96C CAII reveals that the engineered side chain does not coordinate to zinc; instead, zinc is tetrahedrally liganded by H94, H119, and two solvent molecules. Thus, the beta-sheet superstructure is not sufficiently plastic in this location to allow C96 to coordinate to the metal ion. Substitution of the thiolate or carboxylate group for wild-type histidine in H119C and H119D CAIIs reveals that tetrahedral metal coordination is maintained in each variant; however, since there is no plastic structural response of the corresponding beta-strand, a longer metal-ligand separation results.(ABSTRACT TRUNCATED AT 250 WORDS)
-
-	Structural consequences of redesigning a protein-zinc binding site.,Ippolito JA, Christianson DW Biochemistry. 1994 Dec 27;33(51):15241-9. PMID:7803386<ref>PMID:7803386</ref>
-
-	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
-	</div>
-	<div class="pdbe-citations 1cnb" style="background-color:#fffaf0;"></div>

	==See Also==		==See Also==
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	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
-	[[Category: ~~Carbonate dehydratase]]~~	+	[[Category: Homo sapiens]]
-	~~[[Category: Human~~]]	+
	[[Category: Large Structures]]		[[Category: Large Structures]]
-	[[Category: Christianson~~, D W~~]]	+	[[Category: Christianson DW]]
-	[[Category: Ippolito~~, J A~~]]	+	[[Category: Ippolito JA]]

OCA at 10:38, 14 July 2021

2021-07-14T10:38:22Z

OCA at 07:21, 10 October 2019

2019-10-10T07:21:25Z

←Older revision		Revision as of 07:21, 10 October 2019
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	==COMPENSATORY PLASTIC EFFECTS IN THE REDESIGN OF PROTEIN-ZINC BINDING SITES==		==COMPENSATORY PLASTIC EFFECTS IN THE REDESIGN OF PROTEIN-ZINC BINDING SITES==
-	<StructureSection load='1cnb' size='340' side='right' caption='[[1cnb]], [[Resolution\|resolution]] 2.35Å' scene=''>	+	<StructureSection load='1cnb' size='340' side='right'caption='[[1cnb]], [[Resolution\|resolution]] 2.35Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[1cnb]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1CNB FirstGlance]. <br>		<table><tr><td colspan='2'>[[1cnb]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1CNB FirstGlance]. <br>
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	Check<jmol>		Check<jmol>
	<jmolCheckbox>		<jmolCheckbox>
-	<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/cn/1cnb_consurf.spt"</scriptWhenChecked>	+	<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/cn/1cnb_consurf.spt"</scriptWhenChecked>
	<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>		<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
	<text>to colour the structure by Evolutionary Conservation</text>		<text>to colour the structure by Evolutionary Conservation</text>
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	</div>		</div>
	<div class="pdbe-citations 1cnb" style="background-color:#fffaf0;"></div>		<div class="pdbe-citations 1cnb" style="background-color:#fffaf0;"></div>
		+
		+	==See Also==
		+	*[[Carbonic anhydrase 3D structures\|Carbonic anhydrase 3D structures]]
	== References ==		== References ==
	<references/>		<references/>
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	[[Category: Carbonate dehydratase]]		[[Category: Carbonate dehydratase]]
	[[Category: Human]]		[[Category: Human]]
		+	[[Category: Large Structures]]
	[[Category: Christianson, D W]]		[[Category: Christianson, D W]]
	[[Category: Ippolito, J A]]		[[Category: Ippolito, J A]]

OCA at 06:29, 29 November 2017

2017-11-29T06:29:19Z

←Older revision		Revision as of 06:29, 29 November 2017
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	<StructureSection load='1cnb' size='340' side='right' caption='[[1cnb]], [[Resolution\|resolution]] 2.35Å' scene=''>		<StructureSection load='1cnb' size='340' side='right' caption='[[1cnb]], [[Resolution\|resolution]] 2.35Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[1cnb]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1CNB FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[1cnb]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1CNB FirstGlance]. <br>
	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene></td></tr>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene></td></tr>
	<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Carbonate_dehydratase Carbonate dehydratase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.1 4.2.1.1] </span></td></tr>		<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Carbonate_dehydratase Carbonate dehydratase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.1 4.2.1.1] </span></td></tr>
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	</div>		</div>
	<div class="pdbe-citations 1cnb" style="background-color:#fffaf0;"></div>		<div class="pdbe-citations 1cnb" style="background-color:#fffaf0;"></div>
-
-	==See Also==
-	*[[Carbonic anhydrase\|Carbonic anhydrase]]
	== References ==		== References ==
	<references/>		<references/>
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	</StructureSection>		</StructureSection>
	[[Category: Carbonate dehydratase]]		[[Category: Carbonate dehydratase]]
		+	[[Category: Human]]
	[[Category: Christianson, D W]]		[[Category: Christianson, D W]]
	[[Category: Ippolito, J A]]		[[Category: Ippolito, J A]]

OCA at 11:18, 24 August 2017

2017-08-24T11:18:21Z

←Older revision		Revision as of 11:18, 24 August 2017
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		+
	==COMPENSATORY PLASTIC EFFECTS IN THE REDESIGN OF PROTEIN-ZINC BINDING SITES==		==COMPENSATORY PLASTIC EFFECTS IN THE REDESIGN OF PROTEIN-ZINC BINDING SITES==
	<StructureSection load='1cnb' size='340' side='right' caption='[[1cnb]], [[Resolution\|resolution]] 2.35Å' scene=''>		<StructureSection load='1cnb' size='340' side='right' caption='[[1cnb]], [[Resolution\|resolution]] 2.35Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[1cnb]] is a 1 chain structure ~~with sequence from [http://en.wikipedia.org/wiki/Human Human]~~. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1CNB FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[1cnb]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1CNB FirstGlance]. <br>
	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene></td></tr>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene></td></tr>
	<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Carbonate_dehydratase Carbonate dehydratase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.1 4.2.1.1] </span></td></tr>		<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Carbonate_dehydratase Carbonate dehydratase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.1 4.2.1.1] </span></td></tr>
-	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1cnb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cnb OCA], [http://pdbe.org/1cnb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1cnb RCSB], [http://www.ebi.ac.uk/pdbsum/1cnb PDBsum]</span></td></tr>	+	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1cnb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cnb OCA], [http://pdbe.org/1cnb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1cnb RCSB], [http://www.ebi.ac.uk/pdbsum/1cnb PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1cnb ProSAT]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==
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	<text>to colour the structure by Evolutionary Conservation</text>		<text>to colour the structure by Evolutionary Conservation</text>
	</jmolCheckbox>		</jmolCheckbox>
-	</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary\|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/~~chain_selection~~.php?pdb_ID=~~2ata~~ ConSurf].	+	</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary\|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1cnb ConSurf].
	<div style="clear:both"></div>		<div style="clear:both"></div>
	<div style="background-color:#fffaf0;">		<div style="background-color:#fffaf0;">
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	</StructureSection>		</StructureSection>
	[[Category: Carbonate dehydratase]]		[[Category: Carbonate dehydratase]]
-	[[Category: Human]]
	[[Category: Christianson, D W]]		[[Category: Christianson, D W]]
	[[Category: Ippolito, J A]]		[[Category: Ippolito, J A]]

OCA at 08:03, 11 September 2015

2015-09-11T08:03:17Z

←Older revision		Revision as of 08:03, 11 September 2015
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	<StructureSection load='1cnb' size='340' side='right' caption='[[1cnb]], [[Resolution\|resolution]] 2.35Å' scene=''>		<StructureSection load='1cnb' size='340' side='right' caption='[[1cnb]], [[Resolution\|resolution]] 2.35Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[1cnb]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/~~Homo_sapiens Homo sapiens~~]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1CNB FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[1cnb]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1CNB FirstGlance]. <br>
	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene></td></tr>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene></td></tr>
	<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Carbonate_dehydratase Carbonate dehydratase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.1 4.2.1.1] </span></td></tr>		<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Carbonate_dehydratase Carbonate dehydratase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.1 4.2.1.1] </span></td></tr>
-	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1cnb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cnb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1cnb RCSB], [http://www.ebi.ac.uk/pdbsum/1cnb PDBsum]</span></td></tr>	+	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1cnb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cnb OCA], [http://pdbe.org/1cnb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1cnb RCSB], [http://www.ebi.ac.uk/pdbsum/1cnb PDBsum]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==
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	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>		From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
	</div>		</div>
		+	<div class="pdbe-citations 1cnb" style="background-color:#fffaf0;"></div>

	==See Also==		==See Also==
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	</StructureSection>		</StructureSection>
	[[Category: Carbonate dehydratase]]		[[Category: Carbonate dehydratase]]
-	[[Category: ~~Homo sapiens~~]]	+	[[Category: Human]]
	[[Category: Christianson, D W]]		[[Category: Christianson, D W]]
	[[Category: Ippolito, J A]]		[[Category: Ippolito, J A]]

OCA at 22:22, 22 December 2014

2014-12-22T22:22:06Z

←Older revision		Revision as of 22:22, 22 December 2014
Line 3:		Line 3:
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[1cnb]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1CNB FirstGlance]. <br>		<table><tr><td colspan='2'>[[1cnb]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1CNB FirstGlance]. <br>
-	</td></tr><tr><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene><br>	+	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene></td></tr>
-	<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Carbonate_dehydratase Carbonate dehydratase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.1 4.2.1.1] </span></td></tr>	+	<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Carbonate_dehydratase Carbonate dehydratase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.1 4.2.1.1] </span></td></tr>
-	<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1cnb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cnb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1cnb RCSB], [http://www.ebi.ac.uk/pdbsum/1cnb PDBsum]</span></td></tr>	+	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1cnb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cnb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1cnb RCSB], [http://www.ebi.ac.uk/pdbsum/1cnb PDBsum]</span></td></tr>
-	<table>	+	</table>
	== Disease ==		== Disease ==
	[[http://www.uniprot.org/uniprot/CAH2_HUMAN CAH2_HUMAN]] Defects in CA2 are the cause of osteopetrosis autosomal recessive type 3 (OPTB3) [MIM:[http://omim.org/entry/259730 259730]]; also known as osteopetrosis with renal tubular acidosis, carbonic anhydrase II deficiency syndrome, Guibaud-Vainsel syndrome or marble brain disease. Osteopetrosis is a rare genetic disease characterized by abnormally dense bone, due to defective resorption of immature bone. The disorder occurs in two forms: a severe autosomal recessive form occurring in utero, infancy, or childhood, and a benign autosomal dominant form occurring in adolescence or adulthood. Autosomal recessive osteopetrosis is usually associated with normal or elevated amount of non-functional osteoclasts. OPTB3 is associated with renal tubular acidosis, cerebral calcification (marble brain disease) and in some cases with mental retardation.<ref>PMID:1928091</ref> <ref>PMID:1542674</ref> <ref>PMID:8834238</ref> <ref>PMID:9143915</ref> <ref>PMID:15300855</ref>		[[http://www.uniprot.org/uniprot/CAH2_HUMAN CAH2_HUMAN]] Defects in CA2 are the cause of osteopetrosis autosomal recessive type 3 (OPTB3) [MIM:[http://omim.org/entry/259730 259730]]; also known as osteopetrosis with renal tubular acidosis, carbonic anhydrase II deficiency syndrome, Guibaud-Vainsel syndrome or marble brain disease. Osteopetrosis is a rare genetic disease characterized by abnormally dense bone, due to defective resorption of immature bone. The disorder occurs in two forms: a severe autosomal recessive form occurring in utero, infancy, or childhood, and a benign autosomal dominant form occurring in adolescence or adulthood. Autosomal recessive osteopetrosis is usually associated with normal or elevated amount of non-functional osteoclasts. OPTB3 is associated with renal tubular acidosis, cerebral calcification (marble brain disease) and in some cases with mental retardation.<ref>PMID:1928091</ref> <ref>PMID:1542674</ref> <ref>PMID:8834238</ref> <ref>PMID:9143915</ref> <ref>PMID:15300855</ref>
Line 38:		Line 38:
	[[Category: Carbonate dehydratase]]		[[Category: Carbonate dehydratase]]
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
-	[[Category: Christianson, D W.]]	+	[[Category: Christianson, D W]]
-	[[Category: Ippolito, J A.]]	+	[[Category: Ippolito, J A]]

OCA at 16:11, 29 September 2014

2014-09-29T16:11:44Z

←Older revision		Revision as of 16:11, 29 September 2014
Line 1:		Line 1:
-	~~{{STRUCTURE_1cnb\| PDB=1cnb \| SCENE= }}~~	+	==COMPENSATORY PLASTIC EFFECTS IN THE REDESIGN OF PROTEIN-ZINC BINDING SITES==
-	===COMPENSATORY PLASTIC EFFECTS IN THE REDESIGN OF PROTEIN-ZINC BINDING SITES===	+	<StructureSection load='1cnb' size='340' side='right' caption='[[1cnb]], [[Resolution\|resolution]] 2.35Å' scene=''>
-	~~{{ABSTRACT_PUBMED_7803386}}~~	+	== Structural highlights ==
		+	<table><tr><td colspan='2'>[[1cnb]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1CNB FirstGlance]. <br>
		+	</td></tr><tr><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene><br>
		+	<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Carbonate_dehydratase Carbonate dehydratase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.1 4.2.1.1] </span></td></tr>
		+	<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1cnb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cnb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1cnb RCSB], [http://www.ebi.ac.uk/pdbsum/1cnb PDBsum]</span></td></tr>
		+	<table>
		+	== Disease ==
		+	[[http://www.uniprot.org/uniprot/CAH2_HUMAN CAH2_HUMAN]] Defects in CA2 are the cause of osteopetrosis autosomal recessive type 3 (OPTB3) [MIM:[http://omim.org/entry/259730 259730]]; also known as osteopetrosis with renal tubular acidosis, carbonic anhydrase II deficiency syndrome, Guibaud-Vainsel syndrome or marble brain disease. Osteopetrosis is a rare genetic disease characterized by abnormally dense bone, due to defective resorption of immature bone. The disorder occurs in two forms: a severe autosomal recessive form occurring in utero, infancy, or childhood, and a benign autosomal dominant form occurring in adolescence or adulthood. Autosomal recessive osteopetrosis is usually associated with normal or elevated amount of non-functional osteoclasts. OPTB3 is associated with renal tubular acidosis, cerebral calcification (marble brain disease) and in some cases with mental retardation.<ref>PMID:1928091</ref> <ref>PMID:1542674</ref> <ref>PMID:8834238</ref> <ref>PMID:9143915</ref> <ref>PMID:15300855</ref>
		+	== Function ==
		+	[[http://www.uniprot.org/uniprot/CAH2_HUMAN CAH2_HUMAN]] Essential for bone resorption and osteoclast differentiation (By similarity). Reversible hydration of carbon dioxide. Can hydrate cyanamide to urea. Involved in the regulation of fluid secretion into the anterior chamber of the eye.<ref>PMID:10550681</ref> <ref>PMID:11831900</ref>
		+	== Evolutionary Conservation ==
		+	[[Image:Consurf_key_small.gif\|200px\|right]]
		+	Check<jmol>
		+	<jmolCheckbox>
		+	<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/cn/1cnb_consurf.spt"</scriptWhenChecked>
		+	<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
		+	<text>to colour the structure by Evolutionary Conservation</text>
		+	</jmolCheckbox>
		+	</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary\|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
		+	<div style="clear:both"></div>
		+	<div style="background-color:#fffaf0;">
		+	== Publication Abstract from PubMed ==
		+	In order to probe the structural importance of zinc ligands in the active site of human carbonic anhydrase II (CAII), we have determined the three-dimensional structures of H94C (in metal-bound form), H94C-BME (i.e., disulfide-linked with beta-mercaptoethanol), H94A, H96C, H119C, and H119D variants of CAII by X-ray crystallographic methods at resolutions of 2.2, 2.35, 2.25, 2.3, 2.2, and 2.25 A, respectively. Each variant crystallizes isomorphously with the wild-type enzyme, in which zinc is tetrahedrally coordinated by H94, H96, H119, and hydroxide ion. The structure of H94C CAII reveals the successful substitution of the naturally occurring histidine zinc ligand by a cysteine thiolate, and metal coordination by C94 is facilitated by the plastic structural response of the beta-sheet superstructure. Importantly, the resulting structure represents the catalytically active form of the enzyme reported previously [Alexander, R. S., Kiefer, L. L., Fierke, C. A., & Christianson, D. W. (1993) Biochemistry 32, 1510-1518]. Contrastingly, the structure of H96C CAII reveals that the engineered side chain does not coordinate to zinc; instead, zinc is tetrahedrally liganded by H94, H119, and two solvent molecules. Thus, the beta-sheet superstructure is not sufficiently plastic in this location to allow C96 to coordinate to the metal ion. Substitution of the thiolate or carboxylate group for wild-type histidine in H119C and H119D CAIIs reveals that tetrahedral metal coordination is maintained in each variant; however, since there is no plastic structural response of the corresponding beta-strand, a longer metal-ligand separation results.(ABSTRACT TRUNCATED AT 250 WORDS)

-	~~==Disease==~~	+	Structural consequences of redesigning a protein-zinc binding site.,Ippolito JA, Christianson DW Biochemistry. 1994 Dec 27;33(51):15241-9. PMID:7803386<ref>PMID:7803386</ref>
-	~~[[http://www.uniprot.org/uniprot/CAH2_HUMAN CAH2_HUMAN]] Defects in CA2 are the cause~~ of osteopetrosis autosomal recessive type 3 (OPTB3) [MIM:[http://omim.org/entry/259730 259730]]; also known as osteopetrosis with renal tubular acidosis, carbonic anhydrase II deficiency syndrome, Guibaud-~~Vainsel syndrome or marble brain disease~~. ~~Osteopetrosis is a rare genetic disease characterized by abnormally dense bone~~, ~~due to defective resorption of immature bone. The disorder occurs in two forms: a severe autosomal recessive form occurring in utero~~, ~~infancy, or childhood, and a benign autosomal dominant form occurring in adolescence or adulthood~~. ~~Autosomal recessive osteopetrosis is usually associated with normal or elevated amount of non-functional osteoclasts. OPTB3 is associated with renal tubular acidosis, cerebral calcification~~ (~~marble brain disease~~) ~~and in some cases with mental retardation~~.~~<ref>~~PMID:~~1928091</ref><ref>PMID:1542674</ref><ref>PMID:8834238</ref><ref>PMID:9143915</ref>~~<ref>PMID:~~15300855~~</ref>	+

-	~~==Function==~~	+	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
-	~~[[http:~~/~~/www.uniprot.org/uniprot/CAH2_HUMAN CAH2_HUMAN]] Essential for bone resorption and osteoclast differentiation (By similarity). Reversible hydration~~ of ~~carbon dioxide~~. ~~Can hydrate cyanamide to urea~~. ~~Involved in the regulation~~ of ~~fluid secretion into the anterior chamber of the eye~~.<~~ref~~>~~PMID:10550681~~</~~ref~~>~~<ref>PMID:11831900</ref>~~	+	</div>
-		+
-	~~==About this Structure==~~	+
-	[[1cnb]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA].	+

	==See Also==		==See Also==
	*[[Carbonic anhydrase\|Carbonic anhydrase]]		*[[Carbonic anhydrase\|Carbonic anhydrase]]
-		+	== References ==
-	==~~Reference~~==	+	<references/>
-	~~<ref group="xtra">PMID:007803386</ref>~~<references ~~group="xtra"~~/><~~references~~/>	+	__TOC__
		+	</StructureSection>
	[[Category: Carbonate dehydratase]]		[[Category: Carbonate dehydratase]]
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
	[[Category: Christianson, D W.]]		[[Category: Christianson, D W.]]
	[[Category: Ippolito, J A.]]		[[Category: Ippolito, J A.]]

OCA at 03:59, 25 March 2013

2013-03-25T03:59:30Z

←Older revision		Revision as of 03:59, 25 March 2013
Line 1:		Line 1:
-	[[Image:1cnb.png\|left\|200px]]
-
	{{STRUCTURE_1cnb\| PDB=1cnb \| SCENE= }}		{{STRUCTURE_1cnb\| PDB=1cnb \| SCENE= }}
-
	===COMPENSATORY PLASTIC EFFECTS IN THE REDESIGN OF PROTEIN-ZINC BINDING SITES===		===COMPENSATORY PLASTIC EFFECTS IN THE REDESIGN OF PROTEIN-ZINC BINDING SITES===
		+	{{ABSTRACT_PUBMED_7803386}}

-	~~{{ABSTRACT_PUBMED_7803386}}~~	+	==Disease==
		+	[[http://www.uniprot.org/uniprot/CAH2_HUMAN CAH2_HUMAN]] Defects in CA2 are the cause of osteopetrosis autosomal recessive type 3 (OPTB3) [MIM:[http://omim.org/entry/259730 259730]]; also known as osteopetrosis with renal tubular acidosis, carbonic anhydrase II deficiency syndrome, Guibaud-Vainsel syndrome or marble brain disease. Osteopetrosis is a rare genetic disease characterized by abnormally dense bone, due to defective resorption of immature bone. The disorder occurs in two forms: a severe autosomal recessive form occurring in utero, infancy, or childhood, and a benign autosomal dominant form occurring in adolescence or adulthood. Autosomal recessive osteopetrosis is usually associated with normal or elevated amount of non-functional osteoclasts. OPTB3 is associated with renal tubular acidosis, cerebral calcification (marble brain disease) and in some cases with mental retardation.<ref>PMID:1928091</ref><ref>PMID:1542674</ref><ref>PMID:8834238</ref><ref>PMID:9143915</ref><ref>PMID:15300855</ref>
		+
		+	==Function==
		+	[[http://www.uniprot.org/uniprot/CAH2_HUMAN CAH2_HUMAN]] Essential for bone resorption and osteoclast differentiation (By similarity). Reversible hydration of carbon dioxide. Can hydrate cyanamide to urea. Involved in the regulation of fluid secretion into the anterior chamber of the eye.<ref>PMID:10550681</ref><ref>PMID:11831900</ref>

	==About this Structure==		==About this Structure==
Line 14:		Line 16:

	==Reference==		==Reference==
-	<ref group="xtra">PMID:007803386</ref><references group="xtra"/>	+	<ref group="xtra">PMID:007803386</ref><references group="xtra"/><references/>
	[[Category: Carbonate dehydratase]]		[[Category: Carbonate dehydratase]]
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
	[[Category: Christianson, D W.]]		[[Category: Christianson, D W.]]
	[[Category: Ippolito, J A.]]		[[Category: Ippolito, J A.]]

OCA at 17:19, 20 October 2012

2012-10-20T17:19:14Z

←Older revision		Revision as of 17:19, 20 October 2012
Line 8:		Line 8:

	==About this Structure==		==About this Structure==
-	[[1cnb]] is a 1 chain structure ~~of [[Carbonic anhydrase]]~~ with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA].	+	[[1cnb]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA].

	==See Also==		==See Also==

←Older revision		Revision as of 10:38, 14 July 2021
Line 3:		Line 3:
	<StructureSection load='1cnb' size='340' side='right'caption='[[1cnb]], [[Resolution\|resolution]] 2.35Å' scene=''>		<StructureSection load='1cnb' size='340' side='right'caption='[[1cnb]], [[Resolution\|resolution]] 2.35Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[1cnb]] is a 1 chain structure with sequence from [~~http~~://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA]. For a <b>guided tour on the structure components</b> use [~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=1CNB FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[1cnb]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CNB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1CNB FirstGlance]. <br>
-	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene></td></tr>	+	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene></td></tr>
-	<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[~~http~~://en.wikipedia.org/wiki/Carbonate_dehydratase Carbonate dehydratase], with EC number [~~http~~://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.1 4.2.1.1] </span></td></tr>	+	<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Carbonate_dehydratase Carbonate dehydratase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.1 4.2.1.1] </span></td></tr>
-	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=1cnb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cnb OCA], [~~http~~://pdbe.org/1cnb PDBe], [~~http~~://www.rcsb.org/pdb/explore.do?structureId=1cnb RCSB], [~~http~~://www.ebi.ac.uk/pdbsum/1cnb PDBsum], [~~http~~://prosat.h-its.org/prosat/prosatexe?pdbcode=1cnb ProSAT]</span></td></tr>	+	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1cnb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cnb OCA], [https://pdbe.org/1cnb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1cnb RCSB], [https://www.ebi.ac.uk/pdbsum/1cnb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1cnb ProSAT]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==
-	[[~~http~~://www.uniprot.org/uniprot/CAH2_HUMAN CAH2_HUMAN]] Defects in CA2 are the cause of osteopetrosis autosomal recessive type 3 (OPTB3) [MIM:[~~http~~://omim.org/entry/259730 259730]]; also known as osteopetrosis with renal tubular acidosis, carbonic anhydrase II deficiency syndrome, Guibaud-Vainsel syndrome or marble brain disease. Osteopetrosis is a rare genetic disease characterized by abnormally dense bone, due to defective resorption of immature bone. The disorder occurs in two forms: a severe autosomal recessive form occurring in utero, infancy, or childhood, and a benign autosomal dominant form occurring in adolescence or adulthood. Autosomal recessive osteopetrosis is usually associated with normal or elevated amount of non-functional osteoclasts. OPTB3 is associated with renal tubular acidosis, cerebral calcification (marble brain disease) and in some cases with mental retardation.<ref>PMID:1928091</ref> <ref>PMID:1542674</ref> <ref>PMID:8834238</ref> <ref>PMID:9143915</ref> <ref>PMID:15300855</ref>	+	[[https://www.uniprot.org/uniprot/CAH2_HUMAN CAH2_HUMAN]] Defects in CA2 are the cause of osteopetrosis autosomal recessive type 3 (OPTB3) [MIM:[https://omim.org/entry/259730 259730]]; also known as osteopetrosis with renal tubular acidosis, carbonic anhydrase II deficiency syndrome, Guibaud-Vainsel syndrome or marble brain disease. Osteopetrosis is a rare genetic disease characterized by abnormally dense bone, due to defective resorption of immature bone. The disorder occurs in two forms: a severe autosomal recessive form occurring in utero, infancy, or childhood, and a benign autosomal dominant form occurring in adolescence or adulthood. Autosomal recessive osteopetrosis is usually associated with normal or elevated amount of non-functional osteoclasts. OPTB3 is associated with renal tubular acidosis, cerebral calcification (marble brain disease) and in some cases with mental retardation.<ref>PMID:1928091</ref> <ref>PMID:1542674</ref> <ref>PMID:8834238</ref> <ref>PMID:9143915</ref> <ref>PMID:15300855</ref>
	== Function ==		== Function ==
-	[[~~http~~://www.uniprot.org/uniprot/CAH2_HUMAN CAH2_HUMAN]] Essential for bone resorption and osteoclast differentiation (By similarity). Reversible hydration of carbon dioxide. Can hydrate cyanamide to urea. Involved in the regulation of fluid secretion into the anterior chamber of the eye.<ref>PMID:10550681</ref> <ref>PMID:11831900</ref>	+	[[https://www.uniprot.org/uniprot/CAH2_HUMAN CAH2_HUMAN]] Essential for bone resorption and osteoclast differentiation (By similarity). Reversible hydration of carbon dioxide. Can hydrate cyanamide to urea. Involved in the regulation of fluid secretion into the anterior chamber of the eye.<ref>PMID:10550681</ref> <ref>PMID:11831900</ref>
	== Evolutionary Conservation ==		== Evolutionary Conservation ==
	[[Image:Consurf_key_small.gif\|200px\|right]]		[[Image:Consurf_key_small.gif\|200px\|right]]