4r83

Crystal structure of Sialyltransferase from Photobacterium damsela

spinqualitylabelsall models 4r83, resolution 1.93Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4r83 is a 4 chain structure with sequence from Photobacterium damselae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.93Å Ligands: CA Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function O66375_9GAMM Publication Abstract from PubMed Sialyltransferase structures fall into either GT-A or GT-B glycosyltransferase fold. Some sialyltransferases from the Photobacterium genus have been shown to contain an additional N-terminal immunoglobulin (Ig)-like domain. Photobacterium damselae alpha2-6-sialyltransferase has been used efficiently in enzymatic and chemoenzymatic synthesis of alpha2-6-linked sialosides. Here we report three crystal structures of this enzyme. Two structures with and without a donor substrate analog CMP-3F(a)Neu5Ac contain an immunoglobulin (Ig)-like domain and adopt the GT-B sialyltransferase fold. The binary structure reveals a non-productive pre-Michaelis complex, which are caused by crystal lattice contacts that prevent the large conformational changes. The third structure lacks the Ig-domain. Comparison of the three structures reveals small inherent flexibility between the two Rossmann-like domains of the GT-B fold. Crystal structures of sialyltransferase from Photobacterium damselae.,Huynh N, Li Y, Yu H, Huang S, Lau K, Chen X, Fisher AJ FEBS Lett. 2014 Dec 20;588(24):4720-9. doi: 10.1016/j.febslet.2014.11.003. Epub, 2014 Nov 15. PMID:25451227 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Sialyltransferase 3D structures

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