3whi

From Proteopedia

(Difference between revisions)

Revision as of 18:26, 4 August 2016

Crystal structure of unautoprocessed form of IS1-inserted Pro-subtilisin E

Structural highlights

3whi is a 2 chain structure with sequence from Bacsu. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Gene:	aprE, apr, aprA, sprE, BSU10300 (BACSU)
Activity:	Subtilisin, with EC number 3.4.21.62
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[SUBT_BACSU] Subtilisin is an extracellular alkaline serine protease, it catalyzes the hydrolysis of proteins and peptide amides.

Publication Abstract from PubMed

Subtilisin E is activated from its inactive precursor Pro-subtilisin E by autoprocessing and degradation of the propeptide. Subtilisin E has two calcium binding sites, the high-affinity Ca1 site and the low-affinity Ca2 site. The Ca1 site is conserved in various subtilisin-like proteases and is important for stability. This site is not formed in Pro-subtilisin E, because the structural rearrangement of the N-terminal region of the subtilisin domain upon autoprocessing is necessary for the formation of this site. As a result, Pro-subtilisin E is not fully folded. In contrast, Pro-Tk-subtilisin from Thermococcus kodakarensis is fully folded, because it does not require the structural rearrangement upon autoprocessing for the formation of the Ca1 site due to the presence of the insertion sequence IS1 between the propeptide and subtilisin domains. To examine whether the Ca1 site is formed in Pro-subtilisin E by inserting IS1 between the propeptide and subtilisin domains, the Pro-subtilisin E mutant with this insertion, IS1-Pro-subtilisin E, and its active site mutants, IS1-Pro-S221A and IS1-Pro-S221C, were constructed and characterized. The crystal structure of IS1-Pro-S221A revealed that this protein is fully folded and the Ca1 site is formed. In this structure, IS1 serves as a linker that brings the N-terminus of the subtilisin domain near the Ca1 site. IS1-Pro-S221A in a calcium-bound form was more stable than that in a calcium-free form by 13.1 degrees C. IS1-Pro-S221C was more rapidly autoprocessed than Pro-S221C. These results suggest that IS1 facilitates the formation of the Ca1 site and the complete folding of Pro-subtilisin E and thereby accelerates its autoprocessing.

Formation of the High-Affinity Calcium Binding Site in Pro-subtilisin E with the Insertion Sequence IS1 of Pro-Tk-subtilisin.,Uehara R, Angkawidjaja C, Koga Y, Kanaya S Biochemistry. 2013 Dec 17;52(50):9080-8. doi: 10.1021/bi401342k. Epub 2013 Dec 4. PMID:24279884^[1]

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

References

↑ Uehara R, Angkawidjaja C, Koga Y, Kanaya S. Formation of the High-Affinity Calcium Binding Site in Pro-subtilisin E with the Insertion Sequence IS1 of Pro-Tk-subtilisin. Biochemistry. 2013 Dec 17;52(50):9080-8. doi: 10.1021/bi401342k. Epub 2013 Dec 4. PMID:24279884 doi:http://dx.doi.org/10.1021/bi401342k

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3whi"

@@ Line 1: / Line 1: @@
 ==Crystal structure of unautoprocessed form of IS1-inserted Pro-subtilisin E==
 <StructureSection load='3whi' size='340' side='right' caption='[[3whi]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">aprE, apr, aprA, sprE, BSU10300 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=224308 BACSU])</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Subtilisin Subtilisin], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.62 3.4.21.62] </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=3whi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3whi OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3whi RCSB], [http://www.ebi.ac.uk/pdbsum/3whi 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=3whi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3whi OCA], [http://pdbe.org/3whi PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3whi RCSB], [http://www.ebi.ac.uk/pdbsum/3whi PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3whi ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 18: / Line 19: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 3whi" style="background-color:#fffaf0;"></div>
 ==See Also==

3whi

From Proteopedia

Revision as of 18:26, 4 August 2016

Crystal structure of unautoprocessed form of IS1-inserted Pro-subtilisin E

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

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