4ns3

Crystal structure of the Delta-pyrroline-5-carboxylate dehydrogenase from Mycobacterium tuberculosis bound with NAD and cobalamin

spinqualitylabelsall models 4ns3, resolution 2.38Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4ns3 is a 6 chain structure with sequence from Mycobacterium tuberculosis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.38Å Ligands: CME, NAD Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function O50443_MYCTU Publication Abstract from PubMed The use of small molecules as "silver bullets" that can bind to generate crosslinks between protein molecules has been advanced as a powerful means of enhancing success in protein crystallization (McPherson and Cudney, 2006). We have explored this approach in attempts to overcome an order-disorder phenomenon that complicated the structural analysis of the enzyme Delta1-pyrroline-5-carboxylate dehydrogenase from Mycobacterium tuberculosis (P5CDH, Mtb-PruA). Using the Silver Bullets Bio screen, we obtained new crystal packing using cobalamin as a co-crystallization agent. This crystal form did not display the order-disorder phenomenon previously encountered. Solution of the crystal structure showed that cobalamin molecules are present in the crystal contacts. Although the cobalamin binding probably does not have physiological relevance, it reflects similarities in the nucleotide-binding region of Mtb-PruA, with the nucleotide loop of cobalamin sharing the binding site for the adenine moiety of NAD+. Use of a "silver bullet" to resolve crystal lattice dislocation disorder: A cobalamin complex of Delta-pyrroline-5-carboxylate dehydrogenase from Mycobacterium tuberculosis.,Lagautriere T, Bashiri G, Baker EN J Struct Biol. 2014 Dec 31. pii: S1047-8477(14)00281-0. doi:, 10.1016/j.jsb.2014.12.007. PMID:25557497 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Pyrroline-5-carboxylate dehydrogenase

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