1dca - Revision history

OCA at 06:51, 7 February 2024

2024-02-07T06:51:57Z

←Older revision		Revision as of 06:51, 7 February 2024
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	<StructureSection load='1dca' size='340' side='right'caption='[[1dca]], [[Resolution\|resolution]] 2.20Å' scene=''>		<StructureSection load='1dca' size='340' side='right'caption='[[1dca]], [[Resolution\|resolution]] 2.20Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[1dca]] 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=1DCA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1DCA FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[1dca]] 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=1DCA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1DCA FirstGlance]. <br>
-	</td></tr><tr id='~~ligand~~'><td class="sblockLbl"><b>[[~~Ligand~~\|~~Ligands~~:]]</b></td><td class="sblockDat" id="~~ligandDat~~">~~<scene name='pdbligand=ZN:ZINC+ION'>ZN</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]] 2.2Å</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=ZN:ZINC+ION'>ZN</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=1dca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dca OCA], [https://pdbe.org/1dca PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1dca RCSB], [https://www.ebi.ac.uk/pdbsum/1dca PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1dca 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=1dca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dca OCA], [https://pdbe.org/1dca PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1dca RCSB], [https://www.ebi.ac.uk/pdbsum/1dca PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1dca 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=1dca 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=1dca ConSurf].
	<div style="clear:both"></div>		<div style="clear:both"></div>
-	<div style="background-color:#fffaf0;">
-	== Publication Abstract from PubMed ==
-	X-ray crystallographic analysis of the Thr-199-->Cys (T199C) variant of human carbonic anhydrase II reveals the first high-resolution structure of an engineered zinc coordination polyhedron in a metalloenzyme. In the wild-type enzyme, Thr-199 accepts a hydrogen bond from zinc-bound hydroxide; in the variant, the polypeptide backbone is sufficiently plastic to permit Cys-199 to displace hydroxide ion and coordinate to zinc with nearly perfect coordination stereochemistry. Importantly, the resulting His3-Cys-Zn2+ motif binds zinc more tightly than the wild-type enzyme [Kiefer, L. L., Krebs, J. F., Paterno, S. A., & Fierke C. A. (1993) Biochemistry (preceding paper in this issue)]. This novel zinc coordination polyhedron is analogous to that postulated for matrix metalloproteinase zymogens such as prostromelysin, where a cysteine-zinc interaction is responsible for the inactivity of the zymogen. Intriguingly, Cys-199 of T199C CAII is displaced from zinc coordination by soaking crystals in high concentrations of acetazolamide. Hence, residual catalytic activity measured for this variant probably arises from an alternate conformer of Cys-199 which allows the catalytic nucleophile, hydroxide ion, to be activated by zinc coordination.
-
-	Structure of an engineered His3Cys zinc binding site in human carbonic anhydrase II.,Ippolito JA, Christianson DW Biochemistry. 1993 Sep 28;32(38):9901-5. PMID:8399159<ref>PMID:8399159</ref>
-
-	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
-	</div>
-	<div class="pdbe-citations 1dca" 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 10:45, 14 July 2021

2021-07-14T10:45:04Z

OCA at 06:41, 10 October 2019

2019-10-10T06:41:42Z

←Older revision		Revision as of 06:41, 10 October 2019
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	==STRUCTURE OF AN ENGINEERED METAL BINDING SITE IN HUMAN CARBONIC ANHYDRASE II REVEALS THE ARCHITECTURE OF A REGULATORY CYSTEINE SWITCH==		==STRUCTURE OF AN ENGINEERED METAL BINDING SITE IN HUMAN CARBONIC ANHYDRASE II REVEALS THE ARCHITECTURE OF A REGULATORY CYSTEINE SWITCH==
-	<StructureSection load='1dca' size='340' side='right' caption='[[1dca]], [[Resolution\|resolution]] 2.20Å' scene=''>	+	<StructureSection load='1dca' size='340' side='right'caption='[[1dca]], [[Resolution\|resolution]] 2.20Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[1dca]] 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=1DCA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DCA FirstGlance]. <br>		<table><tr><td colspan='2'>[[1dca]] 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=1DCA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DCA 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/dc/1dca_consurf.spt"</scriptWhenChecked>	+	<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/dc/1dca_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 1dca" style="background-color:#fffaf0;"></div>		<div class="pdbe-citations 1dca" 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 06:31, 29 November 2017

2017-11-29T06:31:01Z

←Older revision		Revision as of 06:31, 29 November 2017
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	<StructureSection load='1dca' size='340' side='right' caption='[[1dca]], [[Resolution\|resolution]] 2.20Å' scene=''>		<StructureSection load='1dca' size='340' side='right' caption='[[1dca]], [[Resolution\|resolution]] 2.20Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[1dca]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DCA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DCA FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[1dca]] 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=1DCA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DCA FirstGlance]. <br>
	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</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 1dca" style="background-color:#fffaf0;"></div>		<div class="pdbe-citations 1dca" 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 04:05, 30 August 2017

2017-08-30T04:05:57Z

←Older revision		Revision as of 04:05, 30 August 2017
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		+
	==STRUCTURE OF AN ENGINEERED METAL BINDING SITE IN HUMAN CARBONIC ANHYDRASE II REVEALS THE ARCHITECTURE OF A REGULATORY CYSTEINE SWITCH==		==STRUCTURE OF AN ENGINEERED METAL BINDING SITE IN HUMAN CARBONIC ANHYDRASE II REVEALS THE ARCHITECTURE OF A REGULATORY CYSTEINE SWITCH==
	<StructureSection load='1dca' size='340' side='right' caption='[[1dca]], [[Resolution\|resolution]] 2.20Å' scene=''>		<StructureSection load='1dca' size='340' side='right' caption='[[1dca]], [[Resolution\|resolution]] 2.20Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[1dca]] 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=1DCA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DCA FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[1dca]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DCA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DCA FirstGlance]. <br>
	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</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=1dca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dca OCA], [http://pdbe.org/1dca PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1dca RCSB], [http://www.ebi.ac.uk/pdbsum/1dca 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=1dca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dca OCA], [http://pdbe.org/1dca PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1dca RCSB], [http://www.ebi.ac.uk/pdbsum/1dca PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1dca 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=1dca 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 08:15, 11 September 2015

2015-09-11T08:15:35Z

←Older revision		Revision as of 08:15, 11 September 2015
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	<StructureSection load='1dca' size='340' side='right' caption='[[1dca]], [[Resolution\|resolution]] 2.20Å' scene=''>		<StructureSection load='1dca' size='340' side='right' caption='[[1dca]], [[Resolution\|resolution]] 2.20Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[1dca]] 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=1DCA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DCA FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[1dca]] 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=1DCA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DCA FirstGlance]. <br>
	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</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=1dca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dca OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1dca RCSB], [http://www.ebi.ac.uk/pdbsum/1dca 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=1dca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dca OCA], [http://pdbe.org/1dca PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1dca RCSB], [http://www.ebi.ac.uk/pdbsum/1dca 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 1dca" style="background-color:#fffaf0;"></div>

	==See Also==		==See Also==
Line 37:		Line 38:
	</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 22:38, 22 December 2014

2014-12-22T22:38:11Z

←Older revision		Revision as of 22:38, 22 December 2014
Line 3:		Line 3:
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[1dca]] 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=1DCA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DCA FirstGlance]. <br>		<table><tr><td colspan='2'>[[1dca]] 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=1DCA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DCA FirstGlance]. <br>
-	</td></tr><tr><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene><br>	+	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</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=1dca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dca OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1dca RCSB], [http://www.ebi.ac.uk/pdbsum/1dca 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=1dca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dca OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1dca RCSB], [http://www.ebi.ac.uk/pdbsum/1dca 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 16:19, 29 September 2014

2014-09-29T16:19:59Z

←Older revision		Revision as of 16:19, 29 September 2014
Line 1:		Line 1:
-	~~{{STRUCTURE_1dca\| PDB=1dca \| SCENE= }}~~	+	==STRUCTURE OF AN ENGINEERED METAL BINDING SITE IN HUMAN CARBONIC ANHYDRASE II REVEALS THE ARCHITECTURE OF A REGULATORY CYSTEINE SWITCH==
-	===STRUCTURE OF AN ENGINEERED METAL BINDING SITE IN HUMAN CARBONIC ANHYDRASE II REVEALS THE ARCHITECTURE OF A REGULATORY CYSTEINE SWITCH===	+	<StructureSection load='1dca' size='340' side='right' caption='[[1dca]], [[Resolution\|resolution]] 2.20Å' scene=''>
-	~~{{ABSTRACT_PUBMED_8399159}}~~	+	== Structural highlights ==
		+	<table><tr><td colspan='2'>[[1dca]] 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=1DCA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DCA FirstGlance]. <br>
		+	</td></tr><tr><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</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=1dca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dca OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1dca RCSB], [http://www.ebi.ac.uk/pdbsum/1dca 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/dc/1dca_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 ==
		+	X-ray crystallographic analysis of the Thr-199-->Cys (T199C) variant of human carbonic anhydrase II reveals the first high-resolution structure of an engineered zinc coordination polyhedron in a metalloenzyme. In the wild-type enzyme, Thr-199 accepts a hydrogen bond from zinc-bound hydroxide; in the variant, the polypeptide backbone is sufficiently plastic to permit Cys-199 to displace hydroxide ion and coordinate to zinc with nearly perfect coordination stereochemistry. Importantly, the resulting His3-Cys-Zn2+ motif binds zinc more tightly than the wild-type enzyme [Kiefer, L. L., Krebs, J. F., Paterno, S. A., & Fierke C. A. (1993) Biochemistry (preceding paper in this issue)]. This novel zinc coordination polyhedron is analogous to that postulated for matrix metalloproteinase zymogens such as prostromelysin, where a cysteine-zinc interaction is responsible for the inactivity of the zymogen. Intriguingly, Cys-199 of T199C CAII is displaced from zinc coordination by soaking crystals in high concentrations of acetazolamide. Hence, residual catalytic activity measured for this variant probably arises from an alternate conformer of Cys-199 which allows the catalytic nucleophile, hydroxide ion, to be activated by zinc coordination.

-	~~==Disease==~~	+	Structure of an engineered His3Cys zinc binding site in human carbonic anhydrase II.,Ippolito JA, Christianson DW Biochemistry. 1993 Sep 28;32(38):9901-5. PMID:8399159<ref>PMID:8399159</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==~~	+
-	[[1dca]] 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=1DCA OCA].	+

	==See Also==		==See Also==
	*[[Carbonic anhydrase\|Carbonic anhydrase]]		*[[Carbonic anhydrase\|Carbonic anhydrase]]
-		+	== References ==
-	==~~Reference~~==	+	<references/>
-	~~<ref group="xtra">PMID:008399159</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 04:19, 25 March 2013

2013-03-25T04:19:19Z

←Older revision		Revision as of 04:19, 25 March 2013
Line 1:		Line 1:
-	[[Image:1dca.png\|left\|200px]]
-
	{{STRUCTURE_1dca\| PDB=1dca \| SCENE= }}		{{STRUCTURE_1dca\| PDB=1dca \| SCENE= }}
-
	===STRUCTURE OF AN ENGINEERED METAL BINDING SITE IN HUMAN CARBONIC ANHYDRASE II REVEALS THE ARCHITECTURE OF A REGULATORY CYSTEINE SWITCH===		===STRUCTURE OF AN ENGINEERED METAL BINDING SITE IN HUMAN CARBONIC ANHYDRASE II REVEALS THE ARCHITECTURE OF A REGULATORY CYSTEINE SWITCH===
		+	{{ABSTRACT_PUBMED_8399159}}

-	~~{{ABSTRACT_PUBMED_8399159}}~~	+	==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:008399159</ref><references group="xtra"/>	+	<ref group="xtra">PMID:008399159</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 17:23, 20 October 2012

2012-10-20T17:23:46Z

←Older revision		Revision as of 17:23, 20 October 2012
Line 8:		Line 8:

	==About this Structure==		==About this Structure==
-	[[1dca]] 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=1DCA OCA].	+	[[1dca]] 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=1DCA OCA].

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

←Older revision		Revision as of 10:45, 14 July 2021
Line 3:		Line 3:
	<StructureSection load='1dca' size='340' side='right'caption='[[1dca]], [[Resolution\|resolution]] 2.20Å' scene=''>		<StructureSection load='1dca' size='340' side='right'caption='[[1dca]], [[Resolution\|resolution]] 2.20Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[1dca]] 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=1DCA OCA]. For a <b>guided tour on the structure components</b> use [~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=1DCA FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[1dca]] 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=1DCA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1DCA FirstGlance]. <br>
-	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>	+	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</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=1dca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dca OCA], [~~http~~://pdbe.org/1dca PDBe], [~~http~~://www.rcsb.org/pdb/explore.do?structureId=1dca RCSB], [~~http~~://www.ebi.ac.uk/pdbsum/1dca PDBsum], [~~http~~://prosat.h-its.org/prosat/prosatexe?pdbcode=1dca 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=1dca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dca OCA], [https://pdbe.org/1dca PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1dca RCSB], [https://www.ebi.ac.uk/pdbsum/1dca PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1dca 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]]