3bsy

PglD from Campylobacter jejuni, NCTC 11168, in complex with acetyl coenzyme A

spinqualitylabelsall models 3bsy, resolution 1.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3bsy is a 3 chain structure with sequence from Campylobacter jejuni. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: ACO Related: 2npo, 3bss, 3bsw Gene: pglD (Campylobacter jejuni) Activity: UDP-N-acetylglucosamine diphosphorylase, with EC number 2.7.7.23 Resources: FirstGlance, OCA, RCSB, PDBsum 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 carbohydrate 2, 4-diacetamido-2, 4, 6-trideoxy-alpha-D-glucopyranose (BacAc(2)) is found in a variety of eubacterial pathogens. In Campylobacter jejuni, PglD acetylates the C4 amino group on UDP-2-acetamido-4-amino-2, 4, 6-trideoxy-alpha-D-glucopyranose (UDP-4-amino-sugar) to form UDP-BacAc(2). Sequence analysis predicts PglD to be a member of the left-handed beta helix family of enzymes. However, poor sequence homology between PglD and left-handed beta helix enzymes with existing structural data precludes unambiguous identification of the active site. The co-crystal structures of PglD in the presence of citrate, acetyl coenzyme A, or the UDP-4-amino-sugar were solved. The biological assembly is a trimer with one active site formed between two protomers. Residues lining the active site were identified, and results from functional assays on alanine mutants suggest His-125 is critical for catalysis, whereas His-15 and His-134 are involved in substrate binding. These results are discussed in the context of implications for proteins homologous to PglD in other pathogens. Crystal structure and catalytic mechanism of PglD from Campylobacter jejuni.,Olivier NB, Imperiali B J Biol Chem. 2008 Oct 10;283(41):27937-46. Epub 2008 Jul 30. PMID:18667421 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

Proteopedia Page Contributors and Editors (what is this?)

OCA