1ac5

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[[Image:1ac5.png|left|200px]]
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==CRYSTAL STRUCTURE OF KEX1(DELTA)P, A PROHORMONE-PROCESSING CARBOXYPEPTIDASE FROM SACCHAROMYCES CEREVISIAE==
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<StructureSection load='1ac5' size='340' side='right' caption='[[1ac5]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1ac5]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AC5 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1AC5 FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene><br>
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<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Carboxypeptidase_D Carboxypeptidase D], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.16.6 3.4.16.6] </span></td></tr>
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<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=1ac5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ac5 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1ac5 RCSB], [http://www.ebi.ac.uk/pdbsum/1ac5 PDBsum]</span></td></tr>
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<table>
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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/ac/1ac5_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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/chain_selection.php?pdb_ID=2ata 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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Kex1p is a prohormone-processing serine carboxypeptidase found in Saccharomyces cerevisiae. In contrast to yeast serine carboxypeptidase (CPD-Y) and wheat serine carboxypeptidase II (CPDW-II), Kex1p displays a very narrow specificity for lysyl or arginyl residues at the C-terminus of the substrate. The structure of Kex1Deltap, an enzyme that lacks the acidic domain and membrane-spanning portion of Kex1p, has been solved by a combination of molecular replacement and multiple isomorphous replacement and refined to a resolution of 2.4 A. The S1' site of Kex1Deltap is sterically restricted compared to those from CPD-Y or CPDW-II; it also contains two acidic groups that are well positioned to interact with the basic group of a lysine or arginine side chain. The high specificity of Kex1p can therefore be explained by a combination of steric and electronic factors. The structure of the S1 site of Kex1Deltap is also well suited for binding of a lysine or arginine side chain, and the enzyme may therefore exhibit a preference for these residues at P1.
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{{STRUCTURE_1ac5| PDB=1ac5 | SCENE= }}
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Crystal structure of Kex1deltap, a prohormone-processing carboxypeptidase from Saccharomyces cerevisiae,.,Shilton BH, Thomas DY, Cygler M Biochemistry. 1997 Jul 22;36(29):9002-12. PMID:9220988<ref>PMID:9220988</ref>
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===CRYSTAL STRUCTURE OF KEX1(DELTA)P, A PROHORMONE-PROCESSING CARBOXYPEPTIDASE FROM SACCHAROMYCES CEREVISIAE===
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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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{{ABSTRACT_PUBMED_9220988}}
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== References ==
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<references/>
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==About this Structure==
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__TOC__
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[[1ac5]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AC5 OCA].
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</StructureSection>
[[Category: Carboxypeptidase D]]
[[Category: Carboxypeptidase D]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]

Revision as of 08:35, 23 July 2014

CRYSTAL STRUCTURE OF KEX1(DELTA)P, A PROHORMONE-PROCESSING CARBOXYPEPTIDASE FROM SACCHAROMYCES CEREVISIAE

1ac5, resolution 2.40Å

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