4q39

PylD in complex with pyrrolysine and NADH

spinqualitylabelsall models 4q39, resolution 2.20Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4q39 is a 2 chain structure with sequence from Methanosarcina barkeri str. Fusaro. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.2Å Ligands: EDO, GOL, MG, NA, NAI, PEG, PYL Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function PYLD_METBF Catalyzes the ultimate step of the pyrrolysine biosynthesis pathway by converting the isopeptide (3R)-3-methyl-D-ornithyl-N(6)-L-lysine to the 22nd proteinogenic amino acid (PubMed:24916332). Is able to use surrogate substrates such as (3R)-D-ornithyl-N(6)-L-lysine in vitro (PubMed:23720358, PubMed:24916332). Publication Abstract from PubMed The dehydrogenase PylD catalyzes the ultimate step of the pyrrolysine pathway by converting the isopeptide L-lysine-Nepsilon-3R-methyl-D-ornithine to the 22nd proteinogenic amino acid. In this study, we demonstrate how PylD can be harnessed to oxidize various isopeptides to novel amino acids by combining chemical synthesis with enzyme kinetics and X-ray crystallography. The data enable a detailed description of the PylD reaction trajectory for the biosynthesis of pyrroline and tetrahydropyridine rings as constituents of pyrrolysine analogues. The Formation of Pyrroline and Tetrahydropyridine Rings in Amino Acids Catalyzed by Pyrrolysine Synthase (PylD).,Quitterer F, Beck P, Bacher A, Groll M Angew Chem Int Ed Engl. 2014 Jun 10. doi: 10.1002/anie.201402595. PMID:24916332 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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