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2sic

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Revision as of 07:12, 29 November 2017

REFINED CRYSTAL STRUCTURE OF THE COMPLEX OF SUBTILISIN BPN' AND STREPTOMYCES SUBTILISIN INHIBITOR AT 1.8 ANGSTROMS RESOLUTION

Structural highlights

2sic is a 2 chain structure with sequence from "bacillus_amyloliquifaciens"_(sic)_fukumoto_1943 "bacillus amyloliquifaciens" (sic) fukumoto 1943. This structure supersedes the now removed PDB entry 1sic. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Activity:	Hydrolase, with EC number 3.4.21.63, 3.4.21.64, 3.4.21.65 and 3.4.21.67 3.4.21.62, 3.4.21.63, 3.4.21.64, 3.4.21.65 and 3.4.21.67
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[SUBT_BACAM] Subtilisin is an extracellular alkaline serine protease, it catalyzes the hydrolysis of proteins and peptide amides. Has a high substrate specificity to fibrin.^[1] [SSI_STRAO] Strong inhibitor of bacterial serine proteases such as subtilisin.[HAMAP-Rule:MF_00778]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The crystal structure of subtilisin BPN' complexed with a proteinaceous inhibitor SSI (Streptomyces subtilisin inhibitor) was refined at 1.8 A resolution to an R-factor of 0.177 with a root-mean-square deviation from ideal bond lengths of 0.014 A. The work finally established that the SSI-subtilisin complex is a Michaelis complex with a distance between the O gamma of active Ser221 and the carbonyl carbon of the scissile peptide bond being an intermediate value between a covalent bond and a van der Waals' contact, 2.7 A. This feature, as well as the geometry of the catalytic triad and the oxyanion hole, is coincident with that found in other highly refined crystal structures of the complex of subtilisin Novo, subtilisin Carlsberg, bovine trypsin or Streptomyces griseus protease B with their proteinaceous inhibitors. The enzyme-inhibitor beta-sheet interaction is composed of two separate parts: that between the P1-P3 residues of SSI and the 125-127 chain segment (the "S1-3 site") of subtilisin and that between the P4-P6 residues of SSI and th 102-104 chain segment (the "S4-6 site") of subtilisin. The latter beta-interaction is unique to subtilisin. In contrast, the beta-sheet interaction previously found in the complex of subtilisin Novo and chymotrypsin inhibitor 2 or in the complex of subtilisin Carlsberg and Eglin C is distinct from the present complex in that the two types of beta-interactions are not separate. As for the flexibility of the molecules comprising the present complex, the following observations were made by comparing the B-factors for free and complexed SSI and comparing those for free and complexed subtilisin BPN'. The rigidification of the component molecules upon complex formation occurs in a very localized region: in SSI, the "primary" and "secondary" contact regions and the flanking region; in subtilisin BPN', the S1-3 and S4-6 sites and the flanking region.

Refined crystal structure of the complex of subtilisin BPN' and Streptomyces subtilisin inhibitor at 1.8 A resolution.,Takeuchi Y, Satow Y, Nakamura KT, Mitsui Y J Mol Biol. 1991 Sep 5;221(1):309-25. PMID:1920411^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Peng Y, Huang Q, Zhang RH, Zhang YZ. Purification and characterization of a fibrinolytic enzyme produced by Bacillus amyloliquefaciens DC-4 screened from douchi, a traditional Chinese soybean food. Comp Biochem Physiol B Biochem Mol Biol. 2003 Jan;134(1):45-52. PMID:12524032
↑ Takeuchi Y, Satow Y, Nakamura KT, Mitsui Y. Refined crystal structure of the complex of subtilisin BPN' and Streptomyces subtilisin inhibitor at 1.8 A resolution. J Mol Biol. 1991 Sep 5;221(1):309-25. PMID:1920411

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2sic"

@@ Line 1: / Line 1: @@
 ==REFINED CRYSTAL STRUCTURE OF THE COMPLEX OF SUBTILISIN BPN' AND STREPTOMYCES SUBTILISIN INHIBITOR AT 1.8 ANGSTROMS RESOLUTION==
 <StructureSection load='2sic' size='340' side='right' caption='[[2sic]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Hydrolase Hydrolase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.62, 3.4.21.63, 3.4.21.64, 3.4.21.65 and 3.4.21.67 3.4.21.62, 3.4.21.63, 3.4.21.64, 3.4.21.65 and 3.4.21.67] </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=2sic FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2sic OCA], [http://pdbe.org/2sic PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2sic RCSB], [http://www.ebi.ac.uk/pdbsum/2sic 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=2sic FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2sic OCA], [http://pdbe.org/2sic PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2sic RCSB], [http://www.ebi.ac.uk/pdbsum/2sic PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2sic ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 28: / Line 29: @@
 </div>
 <div class="pdbe-citations 2sic" style="background-color:#fffaf0;"></div>
-==See Also==
-*[[Subtilisin|Subtilisin]]
 == References ==
 <references/>

2sic

From Proteopedia

Revision as of 07:12, 29 November 2017

REFINED CRYSTAL STRUCTURE OF THE COMPLEX OF SUBTILISIN BPN' AND STREPTOMYCES SUBTILISIN INHIBITOR AT 1.8 ANGSTROMS RESOLUTION

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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