1geg
From Proteopedia
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| , resolution 1.7Å | |||||||
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| Ligands: | , , , | ||||||
| Activity: | Acetoin dehydrogenase, with EC number 1.1.1.5 | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
CRYATAL STRUCTURE ANALYSIS OF MESO-2,3-BUTANEDIOL DEHYDROGENASE
Overview
The crystal structure of a ternary complex of meso-2,3-butanediol dehydrogenase with NAD+ and a competitive inhibitor, mercaptoethanol, has been determined at 1.7 A resolution by means of molecular replacement and refined to a final R-factor of 0.194. The overall structure is similar to those of the other short chain dehydrogenase/reductase enzymes. The NAD+ binding site, and the positions of catalytic residues Ser139, Tyr152, and Lys156 are also conserved. The crystal structure revealed that mercaptoethanol bound specifically to meso-2,3-butanediol dehydrogenase. Two residues around the active site, Gln140 and Gly183, forming hydrogen bonds with the inhibitor, are important but not sufficient for distinguishing stereoisomerism of a chiral substrate.
About this Structure
1GEG is a Single protein structure of sequence from Klebsiella pneumoniae. Full crystallographic information is available from OCA.
Reference
Crystal structure of meso-2,3-butanediol dehydrogenase in a complex with NAD+ and inhibitor mercaptoethanol at 1.7 A resolution for understanding of chiral substrate recognition mechanisms., Otagiri M, Kurisu G, Ui S, Takusagawa Y, Ohkuma M, Kudo T, Kusunoki M, J Biochem. 2001 Feb;129(2):205-8. PMID:11173520
Page seeded by OCA on Sun Mar 30 20:42:21 2008
