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3n5i

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Revision as of 13:19, 16 January 2019

Crystal structure of the precursor (S250A mutant) of the N-terminal beta-aminopeptidase BapA

Structural highlights

3n5i is a 4 chain structure with sequence from Ccug 52537. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	3n2w, 3n33
Gene:	BapA (CCUG 52537)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[BAPA_SPHXN] Beta-aminopeptidase that can cleave synthetic beta-peptides which consist of backbone-elongated beta-amino acid residues that are not processed by common proteolytic enzymes. Can cleave the beta-peptides beta-homoVal-beta-homoAla-beta-homoLeu and beta-homoAla-beta-homoLeu. Requires a beta-amino acid at the N-terminus of peptide substrates and cleaves the peptide bond between the N-terminal beta-amino acid and the amino acid at the second position of tripeptidic substrates of the general structure H-betahXaa-Ile-betahTyr-OH according to the following preferences with regard to the side chain of the N-terminal beta-amino acid: aliphatic and aromatic > OH-containing > hydrogen, basic and polar.^[1] ^[2]

Publication Abstract from PubMed

The beta-aminopeptidase BapA from Sphingosinicella xenopeptidilytica belongs to the N-terminal nucleophile (Ntn) hydrolases of the DmpA-like family and has the unprecedented property of cleaving N-terminal beta-amino acid residues from peptides. We determined the crystal structures of the native (alphabeta)(4) heterooctamer and of the 153 kDa precursor homotetramer at a resolution of 1.45 and 1.8 A, respectively. These structures together with mutational analyses strongly support mechanisms for autoproteolysis and catalysis that involve residues Ser250, Ser288, and Glu290. The autoproteolytic mechanism is different from the one so far described for Ntn hydrolases. The structures together with functional data also provide insight into the discriminating features of the active site cleft that determine substrate specificity.

Autoproteolytic and catalytic mechanisms for the beta-aminopeptidase BapA--a member of the Ntn hydrolase family.,Merz T, Heck T, Geueke B, Mittl PR, Briand C, Seebach D, Kohler HP, Grutter MG Structure. 2012 Nov 7;20(11):1850-60. doi: 10.1016/j.str.2012.07.017. Epub 2012, Sep 12. PMID:22980995^[3]

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

References

↑ Geueke B, Namoto K, Seebach D, Kohler HP. A novel beta-peptidyl aminopeptidase (BapA) from strain 3-2W4 cleaves peptide bonds of synthetic beta-tri- and beta-dipeptides. J Bacteriol. 2005 Sep;187(17):5910-7. PMID:16109932 doi:http://dx.doi.org/187/17/5910
↑ Geueke B, Heck T, Limbach M, Nesatyy V, Seebach D, Kohler HP. Bacterial beta-peptidyl aminopeptidases with unique substrate specificities for beta-oligopeptides and mixed beta,alpha-oligopeptides. FEBS J. 2006 Dec;273(23):5261-72. Epub 2006 Oct 25. PMID:17064315 doi:http://dx.doi.org/10.1111/j.1742-4658.2006.05519.x
↑ Merz T, Heck T, Geueke B, Mittl PR, Briand C, Seebach D, Kohler HP, Grutter MG. Autoproteolytic and catalytic mechanisms for the beta-aminopeptidase BapA--a member of the Ntn hydrolase family. Structure. 2012 Nov 7;20(11):1850-60. doi: 10.1016/j.str.2012.07.017. Epub 2012, Sep 12. PMID:22980995 doi:http://dx.doi.org/10.1016/j.str.2012.07.017

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/3n5i"

@@ Line 3: / Line 3: @@
 <StructureSection load='3n5i' size='340' side='right' caption='[[3n5i]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3n5i]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3N5I OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3N5I FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3n5i]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Ccug_52537 Ccug 52537]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3N5I OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3N5I FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3n2w|3n2w]], [[3n33|3n33]]</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">BapA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=364098 CCUG 52537])</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=3n5i FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3n5i OCA], [http://pdbe.org/3n5i PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3n5i RCSB], [http://www.ebi.ac.uk/pdbsum/3n5i PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3n5i ProSAT]</span></td></tr>
 </table>
@@ Line 26: / Line 27: @@
 __TOC__
 </StructureSection>
+[[Category: Ccug 52537]]
 [[Category: Geueke, B]]
 [[Category: Gruetter, M G]]

3n5i

From Proteopedia

Revision as of 13:19, 16 January 2019

Crystal structure of the precursor (S250A mutant) of the N-terminal beta-aminopeptidase BapA

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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