3sgb

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{{STRUCTURE_3sgb| PDB=3sgb | SCENE= }}
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==STRUCTURE OF THE COMPLEX OF STREPTOMYCES GRISEUS PROTEASE B AND THE THIRD DOMAIN OF THE TURKEY OVOMUCOID INHIBITOR AT 1.8 ANGSTROMS RESOLUTION==
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===STRUCTURE OF THE COMPLEX OF STREPTOMYCES GRISEUS PROTEASE B AND THE THIRD DOMAIN OF THE TURKEY OVOMUCOID INHIBITOR AT 1.8 ANGSTROMS RESOLUTION===
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<StructureSection load='3sgb' size='340' side='right' caption='[[3sgb]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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{{ABSTRACT_PUBMED_6414511}}
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3sgb]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Streptomyces_griseus Streptomyces griseus]. This structure supersedes the now removed PDB entries and [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1sgb 1sgb]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3SGB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3SGB FirstGlance]. <br>
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</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=3sgb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3sgb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3sgb RCSB], [http://www.ebi.ac.uk/pdbsum/3sgb 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/sg/3sgb_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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The structure of the complex between the serine protease Streptomyces griseus protease B (SGPB) and the third domain of the Kazal-type ovomucoid inhibitor from turkey has been solved at 1.8-A resolution and refined to a conventional R factor of 0.125. As others have reported previously for analogous complexes of proteases and protein inhibitors, the inhibitor binds in a fashion similar to that of a substrate; it is not cleaved, but there is a close approach (2.7 A) of the active site nucleophile Ser-195 O gamma to the carbonyl carbon of the reactive peptide bond of the inhibitor. Contrary to the structural reports regarding the other enzyme-inhibitor complexes, we conclude that there is no evidence for a significant distortion of this peptide bond from planarity. The mechanism of inhibition can be understood in terms of the equilibrium thermodynamic parameters Ka, the enzyme-inhibitor association constant, and Khyd, the equilibrium constant for inhibitor hydrolysis. These thermodynamic parameters can be rationalized in terms of the observed structure.
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==Function==
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Structure of the complex of Streptomyces griseus protease B and the third domain of the turkey ovomucoid inhibitor at 1.8-A resolution.,Read RJ, Fujinaga M, Sielecki AR, James MN Biochemistry. 1983 Sep 13;22(19):4420-33. PMID:6414511<ref>PMID:6414511</ref>
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[[http://www.uniprot.org/uniprot/PRTB_STRGR PRTB_STRGR]] Has a primary specificity for large aliphatic or aromatic amino acids.
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==About this Structure==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[3sgb]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Streptomyces_griseus Streptomyces griseus]. This structure supersedes the now removed PDB entries and [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1sgb 1sgb]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3SGB OCA].
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</div>
==See Also==
==See Also==
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*[[Streptomyces griseus proteinase B|Streptomyces griseus proteinase B]]
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*[[Proteinase|Proteinase]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:006414511</ref><references group="xtra"/><references/>
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__TOC__
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</StructureSection>
[[Category: Streptomyces griseus]]
[[Category: Streptomyces griseus]]
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[[Category: Fujinaga, M.]]
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[[Category: Fujinaga, M]]
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[[Category: James, M N.G.]]
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[[Category: James, M N.G]]
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[[Category: Read, R J.]]
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[[Category: Read, R J]]
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[[Category: Sielecki, A R.]]
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[[Category: Sielecki, A R]]

Revision as of 07:22, 21 December 2014

STRUCTURE OF THE COMPLEX OF STREPTOMYCES GRISEUS PROTEASE B AND THE THIRD DOMAIN OF THE TURKEY OVOMUCOID INHIBITOR AT 1.8 ANGSTROMS RESOLUTION

3sgb, resolution 1.80Å

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