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2hbx

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Revision as of 08:10, 18 October 2017

Crystal Structure of alpha-Amino-beta-Carboxymuconate-epsilon-Semialdehyde-Decarboxylase (ACMSD)

Structural highlights

2hbx is a 2 chain structure with sequence from "bacillus_fluorescens_liquefaciens"_flugge_1886 "bacillus fluorescens liquefaciens" flugge 1886. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Related:	2hbv
Gene:	nbaD ("Bacillus fluorescens liquefaciens" Flugge 1886)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

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

Alpha-amino-beta-carboxymuconate-epsilon-semialdehyde decarboxylase (ACMSD) is a widespread enzyme found in many bacterial species and all currently sequenced eukaryotic organisms. It occupies a key position at the branching point of two metabolic pathways: the tryptophan to quinolinate pathway and the bacterial 2-nitrobenzoic acid degradation pathway. The activity of ACMSD determines whether the metabolites in both pathways are converted to quinolinic acid for NAD biosynthesis or to acetyl-CoA for the citric acid cycle. Here we report the first high-resolution crystal structure of ACMSD from Pseudomonas fluorescens which validates our previous predictions that this enzyme is a member of the metal-dependent amidohydrolase superfamily of the (beta/alpha)(8) TIM barrel fold. The structure of the enzyme in its native form, determined at 1.65 A resolution, reveals the precise spatial arrangement of the active site metal center and identifies a potential substrate-binding pocket. The identity of the native active site metal was determined to be Zn. Also determined was the structure of the enzyme complexed with cobalt at 2.50 A resolution. The hydrogen bonding network around the metal center suggests that Arg51 and His228 may play important roles in catalysis. The metal center configuration of PfACMSD is very similar to that of Zn-dependent adenosine deaminase and Fe-dependent cytosine deaminase, suggesting that ACMSD may share certain similarities in its catalytic mechanism with these enzymes. These data enable us to propose possible catalytic mechanisms for ACMSD which appear to be unprecedented among all currently characterized decarboxylases.

Crystal structure of alpha-amino-beta-carboxymuconate-epsilon-semialdehyde decarboxylase: insight into the active site and catalytic mechanism of a novel decarboxylation reaction.,Martynowski D, Eyobo Y, Li T, Yang K, Liu A, Zhang H Biochemistry. 2006 Sep 5;45(35):10412-21. PMID:16939194^[1]

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

References

↑ Martynowski D, Eyobo Y, Li T, Yang K, Liu A, Zhang H. Crystal structure of alpha-amino-beta-carboxymuconate-epsilon-semialdehyde decarboxylase: insight into the active site and catalytic mechanism of a novel decarboxylation reaction. Biochemistry. 2006 Sep 5;45(35):10412-21. PMID:16939194 doi:http://dx.doi.org/10.1021/bi060903q

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

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

@@ Line 1: / Line 1: @@
 ==Crystal Structure of alpha-Amino-beta-Carboxymuconate-epsilon-Semialdehyde-Decarboxylase (ACMSD)==
 <StructureSection load='2hbx' size='340' side='right' caption='[[2hbx]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2hbv|2hbv]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">nbaD ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=294 "Bacillus fluorescens liquefaciens" Flugge 1886])</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=2hbx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hbx OCA], [http://pdbe.org/2hbx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2hbx RCSB], [http://www.ebi.ac.uk/pdbsum/2hbx 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=2hbx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hbx OCA], [http://pdbe.org/2hbx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2hbx RCSB], [http://www.ebi.ac.uk/pdbsum/2hbx PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2hbx ProSAT]</span></td></tr>
 </table>
 == Evolutionary Conservation ==

2hbx

From Proteopedia

Revision as of 08:10, 18 October 2017

Crystal Structure of alpha-Amino-beta-Carboxymuconate-epsilon-Semialdehyde-Decarboxylase (ACMSD)

Structural highlights

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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