1pn2

Crystal structure analysis of the selenomethionine labelled 2-enoyl-CoA hydratase 2 domain of Candida tropicalis multifunctional enzyme type 2

spinqualitylabelsall models 1pn2, resolution 1.95Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1pn2 is a 4 chain structure with sequence from Atcc 4563. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: EDO NonStd Res: MSE Related: 1pn4 Gene: FOX2 (ATCC 4563) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum Function [FOX2_CANTR] Second trifunctional enzyme acting on the beta-oxidation pathway for fatty acids, possessing hydratase-dehydrogenase-epimerase activities. Converts trans-2-enoyl-CoA via D-3-hydroxyacyl-CoA to 3-ketoacyl-CoA. 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 2-Enoyl-CoA hydratase 2, a part from multifunctional enzyme type 2, hydrates trans-2-enoyl-CoA to 3-hydroxyacyl-CoA in the (3R)-hydroxy-dependent route of peroxisomal beta-oxidation of fatty acids. Unliganded and (3R)-hydroxydecanoyl coenzyme A-complexed crystal structures of 2-enoyl-CoA hydratase 2 from Candida tropicalis multifunctional enzyme type 2 were solved to 1.95- and 2.35-A resolution, respectively. 2-Enoyl-CoA hydratase 2 is a dimeric, alpha+beta protein with a novel quaternary structure. The overall structure of the two-domain subunit of eukaryotic 2-enoyl-CoA hydratase 2 resembles the homodimeric, hot dog fold structures of prokaryotic (R)-specific 2-enoyl-CoA hydratase and beta-hydroxydecanoyl thiol ester dehydrase. Importantly, though, the eukaryotic hydratase 2 has a complete hot dog fold only in its C-domain, whereas the N-domain lacks a long central alpha-helix, thus creating space for bulkier substrates in the binding pocket and explaining the observed difference in substrate preference between eukaryotic and prokaryotic enzymes. Although the N- and C-domains have an identity of <10% at the amino acid level, they share a 50% identity at the nucleotide level and fold similarly. We suggest that a subunit of 2-enoyl-CoA hydratase 2 has evolved via a gene duplication with the concomitant loss of one catalytic site. The hydrogen bonding network of the active site of 2-enoyl-CoA hydratase 2 resembles the active site geometry of mitochondrial (S)-specific 2-enoyl-CoA hydratase 1, although in a mirror image fashion. This arrangement allows the reaction to occur by similar mechanism, supported by mutagenesis and mechanistic studies, although via reciprocal stereochemistry. A two-domain structure of one subunit explains unique features of eukaryotic hydratase 2.,Koski MK, Haapalainen AM, Hiltunen JK, Glumoff T J Biol Chem. 2004 Jun 4;279(23):24666-72. Epub 2004 Mar 29. PMID:15051722 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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