1jw0

From Proteopedia

(Difference between revisions)

Revision as of 00:47, 12 September 2015

Structure of cephalosporin acylase in complex with glutarate

Structural highlights

1jw0 is a 2 chain structure with sequence from Aj 2067. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
NonStd Res:
Related:	1jvz
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[G7AC_BREDI] Catalyzes the deacylation of 7 beta-(4-carboxybutanamido)cephalosporanic acid (glutaryl-7-aminocephalosporanic acid or GL-7-ACA) to 7-aminocephalosporanic acid (7-ACA). Can not efficiently use cephalosporin C (CPC), penicillin G, or ampicillin as substrates.^[1]

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

BACKGROUND: Semisynthetic cephalosporins are primarily synthesized from 7-aminocephalosporanic acid (7-ACA), which is obtained by environmentally toxic chemical deacylation of cephalosporin C (CPC). Thus, the enzymatic conversion of CPC to 7-ACA by cephalosporin acylase (CA) would be of great interest. However, CAs use glutaryl-7-ACA (GL-7-ACA) as a primary substrate and the enzyme has low turnover rates for CPC. RESULTS: The binary complex structures of CA with GL-7-ACA and glutarate (the side-chain of GL-7-ACA) show extensive interactions between the glutaryl moiety of GL-7-ACA and the seven residues that form the side-chain pocket. These interactions explain why the D-alpha-aminoadipyl side-chain of CPC yields a poorer substrate than GL-7-ACA. CONCLUSIONS: This understanding of the nature of substrate specificity may be useful in the design of an enzyme with an improved performance for the conversion of CPC to 7-ACA. Additionally, the catalytic mechanism of the deacylation reaction was revealed by the ligand bound structures.

Structure of cephalosporin acylase in complex with glutaryl-7-aminocephalosporanic acid and glutarate: insight into the basis of its substrate specificity.,Kim Y, Hol WG Chem Biol. 2001 Dec;8(12):1253-64. PMID:11755403^[2]

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

References

↑ Kim Y, Yoon K, Khang Y, Turley S, Hol WG. The 2.0 A crystal structure of cephalosporin acylase. Structure. 2000 Oct 15;8(10):1059-68. PMID:11080627
↑ Kim Y, Hol WG. Structure of cephalosporin acylase in complex with glutaryl-7-aminocephalosporanic acid and glutarate: insight into the basis of its substrate specificity. Chem Biol. 2001 Dec;8(12):1253-64. PMID:11755403

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1jw0"

@@ Line 2: / Line 2: @@
 <StructureSection load='1jw0' size='340' side='right' caption='[[1jw0]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1jw0]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Brevundimonas_diminuta Brevundimonas diminuta]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JW0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1JW0 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1jw0]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Aj_2067 Aj 2067]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JW0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1JW0 FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GUA:GLUTARIC+ACID'>GUA</scene></td></tr>
 <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1jvz|1jvz]]</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=1jw0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1jw0 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1jw0 RCSB], [http://www.ebi.ac.uk/pdbsum/1jw0 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=1jw0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1jw0 OCA], [http://pdbe.org/1jw0 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1jw0 RCSB], [http://www.ebi.ac.uk/pdbsum/1jw0 PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 28: / Line 28: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 1jw0" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 35: / Line 36: @@
 __TOC__
 </StructureSection>
-[[Category: Brevundimonas diminuta]]
+[[Category: Aj 2067]]
 [[Category: Hol, W G.J]]
 [[Category: Kim, Y]]

1jw0

From Proteopedia

Revision as of 00:47, 12 September 2015

Structure of cephalosporin acylase in complex with glutarate

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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