6z5o

CRYSTAL STRUCTURE OF RAT PEROXISOMAL MULTIFUNCTIONAL ENZYME TYPE-1 (RPMFE1) COMPLEXED WITH COENZYME-A AND OXIDISED NICOTINAMIDE ADENINE DINUCLEOTIDE

spinqualitylabelsall models 6z5o, resolution 1.70Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6z5o is a 1 chain structure with sequence from Rattus norvegicus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.7Å Ligands: COA, GOL, NAD, NCA, SO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function ECHP_RAT Publication Abstract from PubMed The peroxisomal multifunctional enzyme type 1 (MFE1) catalyzes two successive reactions in the beta-oxidation cycle: the 2E-enoyl-CoA hydratase (ECH) and NAD(+)-dependent 3S-hydroxyacyl-CoA dehydrogenase (HAD) reactions. MFE1 is a monomeric enzyme that has five domains. The N-terminal part (domains A and B) adopts the crotonase fold and the C-terminal part (domains C, D and E) adopts the HAD fold. A new crystal form of MFE1 has captured a conformation in which both active sites are noncompetent. This structure, at 1.7 A resolution, shows the importance of the interactions between Phe272 in domain B (the linker helix; helix H10 of the crotonase fold) and the beginning of loop 2 (of the crotonase fold) in stabilizing the competent ECH active-site geometry. In addition, protein crystallographic binding studies using optimized crystal-treatment protocols have captured a structure with both the 3-ketodecanoyl-CoA product and NAD(+) bound in the HAD active site, showing the interactions between 3-ketodecanoyl-CoA and residues of the C, D and E domains. Structural comparisons show the importance of domain movements, in particular of the C domain with respect to the D/E domains and of the A domain with respect to the HAD part. These comparisons suggest that the N-terminal part of the linker helix, which interacts tightly with domains A and E, functions as a hinge region for movement of the A domain with respect to the HAD part. Crystallographic binding studies of rat peroxisomal multifunctional enzyme type 1 with 3-ketodecanoyl-CoA: capturing active and inactive states of its hydratase and dehydrogenase catalytic sites.,Sridhar S, Schmitz W, Hiltunen JK, Venkatesan R, Bergmann U, Kiema TR, Wierenga RK Acta Crystallogr D Struct Biol. 2020 Dec 1;76(Pt 12):1256-1269. doi:, 10.1107/S2059798320013819. Epub 2020 Nov 24. PMID:33263331 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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