21jv

Alcohol Oxidase Mod2p from Ogataea methanolica

spinqualitylabelsall models 21jv, resolution 2.65Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 21jv is a 8 chain structure with sequence from Ogataea methanolica. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 2.65Å Ligands: FAD Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Ogataea methanolica is a methylotrophic yeast that can produce diverse recombinant proteins using methanol as the sole carbon and energy source. Unlike most yeast species, which possess a single alcohol oxidase, O. methanolica encodes two isoenzymes, Mod1p and Mod2p. This study examines the structural and functional differences between Mod1p and Mod2p homooctamers. Both enzymes were purified from MOD-disrupted strains and analysed using cryogenic electron microscopy, achieving resolutions of 1.9 and 2.7 A for Mod1p and Mod2p, respectively. The two isozymes assemble as tetramers of dimers stabilized by extensive intersubunit interactions, largely mediated by protruding loop regions and C-terminal extensions. Despite overall structural similarities, Mod1p and Mod2p exhibit subtle differences in surface charge distribution and sequence composition within the FAD-binding domain. These variations correlate with distinct cofactor preferences, with Mod1p binding arabityl FAD and Mod2p binding canonical FAD. Thin-section electron microscopy further revealed that Mod1p and Mod2p form both homomeric and hybrid octamers that assemble into peroxisomal crystalloids essential for methanol metabolism. Collectively, our findings provide mechanistic insight into alcohol oxidase diversity in methylotrophic yeasts, advancing our understanding of methanol utilization and its applications in biotechnology. Cryo-EM Structures of Alcohol Oxidase Isozymes Reveal Structural Determinants of Cofactor Variation and Enzymatic Activity in Ogataea methanolica.,Cai HL, Shimada A, Hamaguchi T, Mizoguchi A, Yonekura K, Tsuchiyama K, Shimada M, Ebihara A, Tani K, Nakagawa T Microb Biotechnol. 2026 Apr;19(4):e70355. doi: 10.1111/1751-7915.70355. PMID:41999200 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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