1a5a - Revision history

OCA at 15:21, 13 March 2024

2024-03-13T15:21:11Z

←Older revision		Revision as of 15:21, 13 March 2024
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	<StructureSection load='1a5a' size='340' side='right'caption='[[1a5a]], [[Resolution\|resolution]] 1.90Å' scene=''>		<StructureSection load='1a5a' size='340' side='right'caption='[[1a5a]], [[Resolution\|resolution]] 1.90Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[1a5a]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A5A OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1A5A FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[1a5a]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Salmonella_enterica_subsp._enterica_serovar_Typhimurium Salmonella enterica subsp. enterica serovar Typhimurium]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A5A OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1A5A FirstGlance]. <br>
-	</td></tr><tr id='~~ligand~~'><td class="sblockLbl"><b>[[~~Ligand~~\|~~Ligands~~:]]</b></td><td class="sblockDat" id="~~ligandDat~~">~~<scene name='pdbligand=K:POTASSIUM+ION'>K</scene>~~, ~~<scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</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]] 1.9Å</td></tr>
-	<tr id='~~activity~~'><td class="sblockLbl"><b>~~Activity~~:</b></td><td class="sblockDat"><~~span class~~='~~plainlinks~~'>~~[https:~~/~~/en.wikipedia.org/wiki/Tryptophan_synthase Tryptophan synthase]~~, ~~with EC number [https~~:~~//www.brenda~~-~~enzymes.info/php/result_flat.php4?ecno=4.2.1.20 4.2.1.20]~~ </~~span~~></td></tr>	+	<tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</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=1a5a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a5a OCA], [https://pdbe.org/1a5a PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1a5a RCSB], [https://www.ebi.ac.uk/pdbsum/1a5a PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1a5a 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=1a5a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a5a OCA], [https://pdbe.org/1a5a PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1a5a RCSB], [https://www.ebi.ac.uk/pdbsum/1a5a PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1a5a ProSAT]</span></td></tr>
	</table>		</table>
	== Function ==		== Function ==
-	[[https://www.uniprot.org/uniprot/TRPA_SALTY TRPA_SALTY]] The alpha subunit is responsible for the aldol cleavage of indoleglycerol phosphate to indole and glyceraldehyde 3-phosphate~~. [[https://www.uniprot.org/uniprot/TRPB_SALTY TRPB_SALTY]] The beta subunit is responsible for the synthesis of L-tryptophan from indole and L-serine~~.	+	[https://www.uniprot.org/uniprot/TRPA_SALTY TRPA_SALTY] The alpha subunit is responsible for the aldol cleavage of indoleglycerol phosphate to indole and glyceraldehyde 3-phosphate.
	== 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=1a5a 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=1a5a ConSurf].
	<div style="clear:both"></div>		<div style="clear:both"></div>
-	<div style="background-color:#fffaf0;">
-	== Publication Abstract from PubMed ==
-	The reversible cleavage of indole-3-glycerol by the alpha-subunit of tryptophan synthase has been proposed to be catalyzed by alphaGlu49 and alphaAsp60. Although previous x-ray crystallographic structures of the tryptophan synthase alpha2beta2 complex showed an interaction between the carboxylate of alphaAsp60 and the bound inhibitor indole-3-propanol phosphate, the carboxylate of alphaGlu49 was too distant to play its proposed role. To clarify the structural and functional roles of alphaGlu49, we have determined crystal structures of a mutant (alphaD60N) alpha2beta2 complex in the presence and absence of the true substrate, indole-3-glycerol phosphate. The enzyme in the crystal cleaves indole-3-glycerol phosphate very slowly at room temperature but not under cryo-conditions of 95 K. The structure of the complex with the true substrate obtained by cryo-crystallography reveals that indole-3-glycerol phosphate and indole-3-propanol phosphate have similar binding modes but different torsion angles. Most importantly, the side chain of alphaGlu49 interacts with 3-hydroxyl group of indole-3-glycerol phosphate as proposed. The movement of the side chain of alphaGlu49 into an extended conformation upon binding the true substrate provides evidence for an induced fit mechanism. Our results demonstrate how cryo-crystallography and mutagenesis can provide insight into enzyme mechanism.
-
-	Cryo-crystallography of a true substrate, indole-3-glycerol phosphate, bound to a mutant (alphaD60N) tryptophan synthase alpha2beta2 complex reveals the correct orientation of active site alphaGlu49.,Rhee S, Miles EW, Davies DR J Biol Chem. 1998 Apr 10;273(15):8553-5. PMID:9535826<ref>PMID:9535826</ref>
-
-	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
-	</div>
-	<div class="pdbe-citations 1a5a" style="background-color:#fffaf0;"></div>

	==See Also==		==See Also==
	*[[Tryptophan synthase 3D structures\|Tryptophan synthase 3D structures]]		*[[Tryptophan synthase 3D structures\|Tryptophan synthase 3D structures]]
-	== References ==
-	<references/>
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
	[[Category: Large Structures]]		[[Category: Large Structures]]
-	[[Category: ~~Tryptophan synthase~~]]	+	[[Category: Salmonella enterica subsp. enterica serovar Typhimurium]]
-	[[Category: Davies~~, D R~~]]	+	[[Category: Davies DR]]
-	[[Category: Miles~~, E W~~]]	+	[[Category: Miles EW]]
-	[[Category: Rhee, S]]	+	[[Category: Rhee S]]
-	~~[[Category: Carbon-oxygen lyase]]~~	+
-	~~[[Category: Lyase~~]]	+

OCA at 09:42, 26 May 2021

2021-05-26T09:42:21Z

←Older revision		Revision as of 09:42, 26 May 2021
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	<StructureSection load='1a5a' size='340' side='right'caption='[[1a5a]], [[Resolution\|resolution]] 1.90Å' scene=''>		<StructureSection load='1a5a' size='340' side='right'caption='[[1a5a]], [[Resolution\|resolution]] 1.90Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[1a5a]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A5A OCA]. For a <b>guided tour on the structure components</b> use [~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=1A5A FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[1a5a]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A5A OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1A5A FirstGlance]. <br>
-	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene></td></tr>	+	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene></td></tr>
-	<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[~~http~~://en.wikipedia.org/wiki/Tryptophan_synthase Tryptophan synthase], with EC number [~~http~~://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.20 4.2.1.20] </span></td></tr>	+	<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Tryptophan_synthase Tryptophan synthase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.20 4.2.1.20] </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=1a5a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a5a OCA], [~~http~~://pdbe.org/1a5a PDBe], [~~http~~://www.rcsb.org/pdb/explore.do?structureId=1a5a RCSB], [~~http~~://www.ebi.ac.uk/pdbsum/1a5a PDBsum], [~~http~~://prosat.h-its.org/prosat/prosatexe?pdbcode=1a5a 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=1a5a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a5a OCA], [https://pdbe.org/1a5a PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1a5a RCSB], [https://www.ebi.ac.uk/pdbsum/1a5a PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1a5a ProSAT]</span></td></tr>
	</table>		</table>
	== Function ==		== Function ==
-	[[~~http~~://www.uniprot.org/uniprot/TRPA_SALTY TRPA_SALTY]] The alpha subunit is responsible for the aldol cleavage of indoleglycerol phosphate to indole and glyceraldehyde 3-phosphate. [[~~http~~://www.uniprot.org/uniprot/TRPB_SALTY TRPB_SALTY]] The beta subunit is responsible for the synthesis of L-tryptophan from indole and L-serine.	+	[[https://www.uniprot.org/uniprot/TRPA_SALTY TRPA_SALTY]] The alpha subunit is responsible for the aldol cleavage of indoleglycerol phosphate to indole and glyceraldehyde 3-phosphate. [[https://www.uniprot.org/uniprot/TRPB_SALTY TRPB_SALTY]] The beta subunit is responsible for the synthesis of L-tryptophan from indole and L-serine.
	== Evolutionary Conservation ==		== Evolutionary Conservation ==
	[[Image:Consurf_key_small.gif\|200px\|right]]		[[Image:Consurf_key_small.gif\|200px\|right]]
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	==See Also==		==See Also==
-	*[[Tryptophan synthase\|Tryptophan synthase]]	+	*[[Tryptophan synthase 3D structures\|Tryptophan synthase 3D structures]]
	== References ==		== References ==
	<references/>		<references/>

OCA at 07:30, 21 August 2019

2019-08-21T07:30:36Z

←Older revision		Revision as of 07:30, 21 August 2019
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	==CRYO-CRYSTALLOGRAPHY OF A TRUE SUBSTRATE, INDOLE-3-GLYCEROL PHOSPHATE, BOUND TO A MUTANT (ALPHAD60N) TRYPTOPHAN SYNTHASE ALPHA2BETA2 COMPLEX REVEALS THE CORRECT ORIENTATION OF ACTIVE SITE ALPHA GLU 49==		==CRYO-CRYSTALLOGRAPHY OF A TRUE SUBSTRATE, INDOLE-3-GLYCEROL PHOSPHATE, BOUND TO A MUTANT (ALPHAD60N) TRYPTOPHAN SYNTHASE ALPHA2BETA2 COMPLEX REVEALS THE CORRECT ORIENTATION OF ACTIVE SITE ALPHA GLU 49==
-	<StructureSection load='1a5a' size='340' side='right' caption='[[1a5a]], [[Resolution\|resolution]] 1.90Å' scene=''>	+	<StructureSection load='1a5a' size='340' side='right'caption='[[1a5a]], [[Resolution\|resolution]] 1.90Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[1a5a]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A5A OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1A5A FirstGlance]. <br>		<table><tr><td colspan='2'>[[1a5a]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A5A OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1A5A FirstGlance]. <br>
Line 14:		Line 14:
	Check<jmol>		Check<jmol>
	<jmolCheckbox>		<jmolCheckbox>
-	<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/a5/1a5a_consurf.spt"</scriptWhenChecked>	+	<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/a5/1a5a_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 1a5a" style="background-color:#fffaf0;"></div>		<div class="pdbe-citations 1a5a" style="background-color:#fffaf0;"></div>
		+
		+	==See Also==
		+	*[[Tryptophan synthase\|Tryptophan synthase]]
	== References ==		== References ==
	<references/>		<references/>
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
		+	[[Category: Large Structures]]
	[[Category: Tryptophan synthase]]		[[Category: Tryptophan synthase]]
	[[Category: Davies, D R]]		[[Category: Davies, D R]]

OCA at 10:32, 15 November 2017

2017-11-15T10:32:50Z

←Older revision		Revision as of 10:32, 15 November 2017
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		+
	==CRYO-CRYSTALLOGRAPHY OF A TRUE SUBSTRATE, INDOLE-3-GLYCEROL PHOSPHATE, BOUND TO A MUTANT (ALPHAD60N) TRYPTOPHAN SYNTHASE ALPHA2BETA2 COMPLEX REVEALS THE CORRECT ORIENTATION OF ACTIVE SITE ALPHA GLU 49==		==CRYO-CRYSTALLOGRAPHY OF A TRUE SUBSTRATE, INDOLE-3-GLYCEROL PHOSPHATE, BOUND TO A MUTANT (ALPHAD60N) TRYPTOPHAN SYNTHASE ALPHA2BETA2 COMPLEX REVEALS THE CORRECT ORIENTATION OF ACTIVE SITE ALPHA GLU 49==
	<StructureSection load='1a5a' size='340' side='right' caption='[[1a5a]], [[Resolution\|resolution]] 1.90Å' scene=''>		<StructureSection load='1a5a' size='340' side='right' caption='[[1a5a]], [[Resolution\|resolution]] 1.90Å' scene=''>
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	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene></td></tr>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene></td></tr>
	<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Tryptophan_synthase Tryptophan synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.20 4.2.1.20] </span></td></tr>		<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Tryptophan_synthase Tryptophan synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.20 4.2.1.20] </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=1a5a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a5a OCA], [http://pdbe.org/1a5a PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1a5a RCSB], [http://www.ebi.ac.uk/pdbsum/1a5a 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=1a5a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a5a OCA], [http://pdbe.org/1a5a PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1a5a RCSB], [http://www.ebi.ac.uk/pdbsum/1a5a PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1a5a ProSAT]</span></td></tr>
	</table>		</table>
	== Function ==		== Function ==
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	</div>		</div>
	<div class="pdbe-citations 1a5a" style="background-color:#fffaf0;"></div>		<div class="pdbe-citations 1a5a" style="background-color:#fffaf0;"></div>
-
-	==See Also==
-	*[[Tryptophan synthase\|Tryptophan synthase]]
	== References ==		== References ==
	<references/>		<references/>

OCA at 18:36, 8 February 2016

2016-02-08T18:36:14Z

←Older revision		Revision as of 18:36, 8 February 2016
Line 17:		Line 17:
	<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=1a5a ConSurf].
	<div style="clear:both"></div>		<div style="clear:both"></div>
	<div style="background-color:#fffaf0;">		<div style="background-color:#fffaf0;">

OCA at 15:40, 9 September 2015

2015-09-09T15:40:38Z

←Older revision		Revision as of 15:40, 9 September 2015
Line 2:		Line 2:
	<StructureSection load='1a5a' size='340' side='right' caption='[[1a5a]], [[Resolution\|resolution]] 1.90Å' scene=''>		<StructureSection load='1a5a' size='340' side='right' caption='[[1a5a]], [[Resolution\|resolution]] 1.90Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[1a5a]] is a 2 chain structure ~~with sequence from [http://en.wikipedia.org/wiki/Salmonella_enterica_subsp._enterica_serovar_typhimurium Salmonella enterica subsp. enterica serovar typhimurium]~~. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A5A OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1A5A FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[1a5a]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A5A OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1A5A FirstGlance]. <br>
	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene></td></tr>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene></td></tr>
-	<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">TRPA/TRPB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=90371 Salmonella enterica subsp. enterica serovar Typhimurium])</td></tr>
	<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Tryptophan_synthase Tryptophan synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.20 4.2.1.20] </span></td></tr>		<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Tryptophan_synthase Tryptophan synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.20 4.2.1.20] </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=1a5a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a5a OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1a5a RCSB], [http://www.ebi.ac.uk/pdbsum/1a5a 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=1a5a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a5a OCA], [http://pdbe.org/1a5a PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1a5a RCSB], [http://www.ebi.ac.uk/pdbsum/1a5a PDBsum]</span></td></tr>
	</table>		</table>
	== Function ==		== Function ==
Line 28:		Line 27:
	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 1a5a" style="background-color:#fffaf0;"></div>

	==See Also==		==See Also==
Line 35:		Line 35:
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
-	[[Category: Salmonella enterica subsp. enterica serovar typhimurium]]
	[[Category: Tryptophan synthase]]		[[Category: Tryptophan synthase]]
	[[Category: Davies, D R]]		[[Category: Davies, D R]]

OCA at 01:21, 25 December 2014

2014-12-25T01:21:16Z

←Older revision		Revision as of 01:21, 25 December 2014
Line 8:		Line 8:
	<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=1a5a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a5a OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1a5a RCSB], [http://www.ebi.ac.uk/pdbsum/1a5a 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=1a5a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a5a OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1a5a RCSB], [http://www.ebi.ac.uk/pdbsum/1a5a PDBsum]</span></td></tr>
	</table>		</table>
		+	== Function ==
		+	[[http://www.uniprot.org/uniprot/TRPA_SALTY TRPA_SALTY]] The alpha subunit is responsible for the aldol cleavage of indoleglycerol phosphate to indole and glyceraldehyde 3-phosphate. [[http://www.uniprot.org/uniprot/TRPB_SALTY TRPB_SALTY]] The beta subunit is responsible for the synthesis of L-tryptophan from indole and L-serine.
	== Evolutionary Conservation ==		== Evolutionary Conservation ==
	[[Image:Consurf_key_small.gif\|200px\|right]]		[[Image:Consurf_key_small.gif\|200px\|right]]

OCA at 09:59, 22 December 2014

2014-12-22T09:59:06Z

←Older revision		Revision as of 09:59, 22 December 2014
Line 3:		Line 3:
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[1a5a]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Salmonella_enterica_subsp._enterica_serovar_typhimurium Salmonella enterica subsp. enterica serovar typhimurium]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A5A OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1A5A FirstGlance]. <br>		<table><tr><td colspan='2'>[[1a5a]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Salmonella_enterica_subsp._enterica_serovar_typhimurium Salmonella enterica subsp. enterica serovar typhimurium]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A5A OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1A5A FirstGlance]. <br>
-	</td></tr><tr><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene><br>	+	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene></td></tr>
-	<tr><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">TRPA/TRPB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=90371 Salmonella enterica subsp. enterica serovar Typhimurium])</td></tr>	+	<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">TRPA/TRPB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=90371 Salmonella enterica subsp. enterica serovar Typhimurium])</td></tr>
-	<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Tryptophan_synthase Tryptophan synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.20 4.2.1.20] </span></td></tr>	+	<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Tryptophan_synthase Tryptophan synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.20 4.2.1.20] </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=1a5a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a5a OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1a5a RCSB], [http://www.ebi.ac.uk/pdbsum/1a5a 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=1a5a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a5a OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1a5a RCSB], [http://www.ebi.ac.uk/pdbsum/1a5a PDBsum]</span></td></tr>
-	<table>	+	</table>
	== Evolutionary Conservation ==		== Evolutionary Conservation ==
	[[Image:Consurf_key_small.gif\|200px\|right]]		[[Image:Consurf_key_small.gif\|200px\|right]]
Line 35:		Line 35:
	[[Category: Salmonella enterica subsp. enterica serovar typhimurium]]		[[Category: Salmonella enterica subsp. enterica serovar typhimurium]]
	[[Category: Tryptophan synthase]]		[[Category: Tryptophan synthase]]
-	[[Category: Davies, D R.]]	+	[[Category: Davies, D R]]
-	[[Category: Miles, E W.]]	+	[[Category: Miles, E W]]
-	[[Category: Rhee, S.]]	+	[[Category: Rhee, S]]
	[[Category: Carbon-oxygen lyase]]		[[Category: Carbon-oxygen lyase]]
	[[Category: Lyase]]		[[Category: Lyase]]

OCA at 08:24, 23 July 2014

2014-07-23T08:24:55Z

←Older revision		Revision as of 08:24, 23 July 2014
Line 1:		Line 1:
-	[[~~Image:~~1a5a.~~png~~\|~~left~~\|200px]]	+	==CRYO-CRYSTALLOGRAPHY OF A TRUE SUBSTRATE, INDOLE-3-GLYCEROL PHOSPHATE, BOUND TO A MUTANT (ALPHAD60N) TRYPTOPHAN SYNTHASE ALPHA2BETA2 COMPLEX REVEALS THE CORRECT ORIENTATION OF ACTIVE SITE ALPHA GLU 49==
		+	<StructureSection load='1a5a' size='340' side='right' caption='[[1a5a]], [[Resolution\|resolution]] 1.90Å' scene=''>
		+	== Structural highlights ==
		+	<table><tr><td colspan='2'>[[1a5a]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Salmonella_enterica_subsp._enterica_serovar_typhimurium Salmonella enterica subsp. enterica serovar typhimurium]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A5A OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1A5A FirstGlance]. <br>
		+	</td></tr><tr><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene><br>
		+	<tr><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">TRPA/TRPB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=90371 Salmonella enterica subsp. enterica serovar Typhimurium])</td></tr>
		+	<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Tryptophan_synthase Tryptophan synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.20 4.2.1.20] </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=1a5a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a5a OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1a5a RCSB], [http://www.ebi.ac.uk/pdbsum/1a5a PDBsum]</span></td></tr>
		+	<table>
		+	== 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/a5/1a5a_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 ==
		+	The reversible cleavage of indole-3-glycerol by the alpha-subunit of tryptophan synthase has been proposed to be catalyzed by alphaGlu49 and alphaAsp60. Although previous x-ray crystallographic structures of the tryptophan synthase alpha2beta2 complex showed an interaction between the carboxylate of alphaAsp60 and the bound inhibitor indole-3-propanol phosphate, the carboxylate of alphaGlu49 was too distant to play its proposed role. To clarify the structural and functional roles of alphaGlu49, we have determined crystal structures of a mutant (alphaD60N) alpha2beta2 complex in the presence and absence of the true substrate, indole-3-glycerol phosphate. The enzyme in the crystal cleaves indole-3-glycerol phosphate very slowly at room temperature but not under cryo-conditions of 95 K. The structure of the complex with the true substrate obtained by cryo-crystallography reveals that indole-3-glycerol phosphate and indole-3-propanol phosphate have similar binding modes but different torsion angles. Most importantly, the side chain of alphaGlu49 interacts with 3-hydroxyl group of indole-3-glycerol phosphate as proposed. The movement of the side chain of alphaGlu49 into an extended conformation upon binding the true substrate provides evidence for an induced fit mechanism. Our results demonstrate how cryo-crystallography and mutagenesis can provide insight into enzyme mechanism.

-	~~{{STRUCTURE_1a5a\| PDB=1a5a \| SCENE= }}~~	+	Cryo-crystallography of a true substrate, indole-3-glycerol phosphate, bound to a mutant (alphaD60N) tryptophan synthase alpha2beta2 complex reveals the correct orientation of active site alphaGlu49.,Rhee S, Miles EW, Davies DR J Biol Chem. 1998 Apr 10;273(15):8553-5. PMID:9535826<ref>PMID:9535826</ref>

-	~~===CRYO-CRYSTALLOGRAPHY OF A TRUE SUBSTRATE~~, ~~INDOLE-3-GLYCEROL PHOSPHATE, BOUND TO A MUTANT (ALPHAD60N) TRYPTOPHAN SYNTHASE ALPHA2BETA2 COMPLEX REVEALS THE CORRECT ORIENTATION OF ACTIVE SITE ALPHA GLU 49===~~	+	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
		+	</div>

-	~~{{ABSTRACT_PUBMED_9535826}}~~	+	==See Also==
-		+	*[[Tryptophan synthase\|Tryptophan synthase]]
-	==~~About this Structure~~==	+	== References ==
-	[[~~1a5a~~]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Salmonella_enterica_subsp._enterica_serovar_typhimurium Salmonella enterica subsp. enterica serovar typhimurium]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A5A OCA].	+	<references/>
-		+	__TOC__
-	==~~Reference~~==	+	</StructureSection>
-	<~~ref group="xtra">PMID:009535826<~~/~~ref~~><~~ref group="xtra">PMID:009692955</ref><references group="xtra"~~/>	+
	[[Category: Salmonella enterica subsp. enterica serovar typhimurium]]		[[Category: Salmonella enterica subsp. enterica serovar typhimurium]]
	[[Category: Tryptophan synthase]]		[[Category: Tryptophan synthase]]

OCA at 14:22, 21 October 2012

2012-10-21T14:22:53Z

←Older revision		Revision as of 14:22, 21 October 2012
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	[[Image:1a5a.png\|left\|200px]]		[[Image:1a5a.png\|left\|200px]]

-	<!--
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	{{STRUCTURE_1a5a\| PDB=1a5a \| SCENE= }}		{{STRUCTURE_1a5a\| PDB=1a5a \| SCENE= }}

	===CRYO-CRYSTALLOGRAPHY OF A TRUE SUBSTRATE, INDOLE-3-GLYCEROL PHOSPHATE, BOUND TO A MUTANT (ALPHAD60N) TRYPTOPHAN SYNTHASE ALPHA2BETA2 COMPLEX REVEALS THE CORRECT ORIENTATION OF ACTIVE SITE ALPHA GLU 49===		===CRYO-CRYSTALLOGRAPHY OF A TRUE SUBSTRATE, INDOLE-3-GLYCEROL PHOSPHATE, BOUND TO A MUTANT (ALPHAD60N) TRYPTOPHAN SYNTHASE ALPHA2BETA2 COMPLEX REVEALS THE CORRECT ORIENTATION OF ACTIVE SITE ALPHA GLU 49===

-
-	<!--
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	{{ABSTRACT_PUBMED_9535826}}		{{ABSTRACT_PUBMED_9535826}}

Line 29:		Line 18:
	[[Category: Rhee, S.]]		[[Category: Rhee, S.]]
	[[Category: Carbon-oxygen lyase]]		[[Category: Carbon-oxygen lyase]]
		+	[[Category: Lyase]]