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2ah4

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[[Image:2ah4.gif|left|200px]]
 
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{{Structure
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==guanidinobenzoyl-trypsin acyl-enzyme at 1.13 A resolution==
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|PDB= 2ah4 |SIZE=350|CAPTION= <scene name='initialview01'>2ah4</scene>, resolution 1.130&Aring;
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<StructureSection load='2ah4' size='340' side='right'caption='[[2ah4]], [[Resolution|resolution]] 1.13&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene> and <scene name='pdbligand=GBS:4-GUANIDINOBENZOIC ACID'>GBS</scene>
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<table><tr><td colspan='2'>[[2ah4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2AH4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2AH4 FirstGlance]. <br>
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|ACTIVITY= [http://en.wikipedia.org/wiki/Trypsin Trypsin], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.4 3.4.21.4]
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.13&#8491;</td></tr>
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|GENE=
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GBS:4-GUANIDINOBENZOIC+ACID'>GBS</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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}}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2ah4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ah4 OCA], [https://pdbe.org/2ah4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ah4 RCSB], [https://www.ebi.ac.uk/pdbsum/2ah4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ah4 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/TRY1_BOVIN TRY1_BOVIN]
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ah/2ah4_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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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=2ah4 ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Atomic resolution structures of trypsin acyl-enzymes and a tetrahedral intermediate analog, along with previously solved structures representing the Michaelis complex, are used to reconstruct events in the catalytic cycle of this classic serine protease. Structural comparisons provide insight into active site adjustments involved in catalysis. Subtle motions of the catalytic serine and histidine residues coordinated with translation of the substrate reaction center are seen to favor the forward progress of the acylation reaction. The structures also clarify the attack trajectory of the hydrolytic water in the deacylation reaction.
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'''guanidinobenzoyl-trypsin acyl-enzyme at 1.13 A resolution'''
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Insights into the serine protease mechanism from atomic resolution structures of trypsin reaction intermediates.,Radisky ES, Lee JM, Lu CJ, Koshland DE Jr Proc Natl Acad Sci U S A. 2006 May 2;103(18):6835-40. Epub 2006 Apr 24. PMID:16636277<ref>PMID:16636277</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 2ah4" style="background-color:#fffaf0;"></div>
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==Overview==
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==See Also==
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Atomic resolution structures of trypsin acyl-enzymes and a tetrahedral intermediate analog, along with previously solved structures representing the Michaelis complex, are used to reconstruct events in the catalytic cycle of this classic serine protease. Structural comparisons provide insight into active site adjustments involved in catalysis. Subtle motions of the catalytic serine and histidine residues coordinated with translation of the substrate reaction center are seen to favor the forward progress of the acylation reaction. The structures also clarify the attack trajectory of the hydrolytic water in the deacylation reaction.
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*[[Trypsin 3D structures|Trypsin 3D structures]]
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== References ==
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==About this Structure==
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<references/>
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2AH4 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2AH4 OCA].
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__TOC__
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</StructureSection>
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==Reference==
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Insights into the serine protease mechanism from atomic resolution structures of trypsin reaction intermediates., Radisky ES, Lee JM, Lu CJ, Koshland DE Jr, Proc Natl Acad Sci U S A. 2006 May 2;103(18):6835-40. Epub 2006 Apr 24. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16636277 16636277]
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[[Category: Bos taurus]]
[[Category: Bos taurus]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Trypsin]]
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[[Category: Koshland Jr DE]]
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[[Category: Jr., D E.Koshland.]]
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[[Category: Lee JM]]
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[[Category: Lee, J M.]]
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[[Category: Lu CJ]]
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[[Category: Lu, C J.]]
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[[Category: Radisky ES]]
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[[Category: Radisky, E S.]]
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[[Category: CA]]
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[[Category: GBS]]
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[[Category: SO4]]
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[[Category: acyl-enzyme; serine protease; proteinase; peptidase; hydrolase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 15:49:38 2008''
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Current revision

guanidinobenzoyl-trypsin acyl-enzyme at 1.13 A resolution

PDB ID 2ah4

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