5e4y

Orthorhombic structure of the acetyl esterase MekB

spinqualitylabelsall models 5e4y, resolution 2.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5e4y is a 2 chain structure with sequence from Pseudomonas veronii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.8Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q0MRG5_9PSED Publication Abstract from PubMed MekB from Pseudomonas veronii and CgHle from Corynebacteriumglutamicum belong to the superfamily of alpha/beta-hydrolase fold proteins. Based on sequence comparisons, they are annotated as homoserine transacetylases in popular databases like UNIPROT, PFAM or ESTHER. However, experimentally, MekB and CgHle were shown to be esterases that hydrolyse preferentially acetic acid esters. We describe the x-ray structures of these enzymes solved to high resolution. The overall structures confirm the close relatedness to experimentally validated homoserine acetyl transferases, but simultaneously the structures exclude the ability of MekB and CgHle to bind homoserine and acetyl-CoA. Insofar the MekB and CgHle structures suggest dividing the homoserine transacetylase family into subfamilies, namely genuine acetyl transferases and acetyl esterases with MekB and CgHle as constituting members of the latter. A novel esterase subfamily with alpha/beta-hydrolase fold suggested by structures of two bacterial enzymes homologous to l-homoserine O-acetyl transferases.,Tolzer C, Pal S, Watzlawick H, Altenbuchner J, Niefind K FEBS Lett. 2016 Jan;590(1):174-84. doi: 10.1002/1873-3468.12031. Epub 2015 Dec, 28. PMID:26787467 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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