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1xat

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Revision as of 09:46, 10 September 2015

STRUCTURE OF THE HEXAPEPTIDE XENOBIOTIC ACETYLTRANSFERASE FROM PSEUDOMONAS AERUGINOSA

Structural highlights

1xat is a 1 chain structure with sequence from "bacillus_aeruginosus"_(schroeter_1872)_trevisan_1885 "bacillus aeruginosus" (schroeter 1872) trevisan 1885. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[CAT4_PSEAE] This enzyme is an effector of chloramphenicol (Cm) resistance in bacteria. Acetylates Cm but not 1-acetoxy-Cm.

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 the xenobiotic acetyltransferase from Pseudomonas aeruginosa PA103 (PaXAT) has been determined, as well as that of its complex with the substrate chloramphenicol and the cofactor analogue desulfo-coenzyme A. PaXAT is a member of the large hexapeptide acyltransferase family of enzymes that display tandem repeated copies of a six-residue hexapeptide repeat sequence motif encoding a left-handed parallel beta helix (L betaH) structural domain. The xenobiotic acetyltransferase class of hexapeptide acyltransferases is composed of microbial enzymes that utilize acetyl-CoA to acylate a variety of hydroxyl-bearing acceptors. The active site of trimeric PaXAT is a short tunnel into which chloramphenicol and the cofactor analogue desulfo-CoA project from opposite ends. This tunnel is formed by the flat parallel beta sheets of two separate L betaH domains and an extended 39-residue loop. His 79 of the extended loop forms hydrogen bonds from its imidazole NE2 atom to the 3-hydroxyl group of chloramphenicol and from its ND1 group to the peptide oxygen of Thr 86. The interactions of this histidine residue are similar to those found in the structurally unrelated type III chloramphenicol acetyltransferase and suggest that His 79 of PaXAT may be similarly positioned and tautomerically stabilized to serve as a general base catalyst.

Structure of the hexapeptide xenobiotic acetyltransferase from Pseudomonas aeruginosa.,Beaman TW, Sugantino M, Roderick SL Biochemistry. 1998 May 12;37(19):6689-96. PMID:9578552^[1]

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

References

↑ Beaman TW, Sugantino M, Roderick SL. Structure of the hexapeptide xenobiotic acetyltransferase from Pseudomonas aeruginosa. Biochemistry. 1998 May 12;37(19):6689-96. PMID:9578552 doi:10.1021/bi980106v

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/1xat"

@@ Line 2: / Line 2: @@
 <StructureSection load='1xat' size='340' side='right' caption='[[1xat]], [[Resolution|resolution]] 3.20&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1xat]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Pseudomonas_aeruginosa Pseudomonas aeruginosa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1XAT OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1XAT FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1xat]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_aeruginosus"_(schroeter_1872)_trevisan_1885 "bacillus aeruginosus" (schroeter 1872) trevisan 1885]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1XAT OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1XAT FirstGlance]. <br>
-</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=1xat FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1xat OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1xat RCSB], [http://www.ebi.ac.uk/pdbsum/1xat PDBsum]</span></td></tr>
+</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=1xat FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1xat OCA], [http://pdbe.org/1xat PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1xat RCSB], [http://www.ebi.ac.uk/pdbsum/1xat PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 25: / Line 25: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 1xat" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>
 __TOC__
 </StructureSection>
-[[Category: Pseudomonas aeruginosa]]
 [[Category: Beaman, T W]]
 [[Category: Roderick, S L]]

1xat

From Proteopedia

Revision as of 09:46, 10 September 2015

STRUCTURE OF THE HEXAPEPTIDE XENOBIOTIC ACETYLTRANSFERASE FROM PSEUDOMONAS AERUGINOSA

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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