Formate dehydrogenase - heterodisulfide reductase - formylmethanofuran dehydrogenase complex from Methanospirillum hungatei (heterodislfide reductase core and mobile arm in conformational state 1, composite structure)
マップデータ
Composite map of the heterodislfide reductase core and mobile arm in state 1 of the formate dehydrogenase - heterodisulfide reductase - formylmethanofuran dehydrogenase complex from M. hungatei
Oxidoreductases; Acting on the aldehyde or oxo group of donors; With unknown physiological acceptors / CoB--CoM heterodisulfide reductase activity / formate metabolic process / oxidoreductase activity, acting on CH or CH2 groups, with an iron-sulfur protein as acceptor / 酸化還元酵素; 含硫化合物に対し酸化酵素として働く / formate dehydrogenase (NAD+) activity / methanogenesis / molybdopterin cofactor binding / iron-sulfur cluster binding / NADH dehydrogenase activity ...Oxidoreductases; Acting on the aldehyde or oxo group of donors; With unknown physiological acceptors / CoB--CoM heterodisulfide reductase activity / formate metabolic process / oxidoreductase activity, acting on CH or CH2 groups, with an iron-sulfur protein as acceptor / 酸化還元酵素; 含硫化合物に対し酸化酵素として働く / formate dehydrogenase (NAD+) activity / methanogenesis / molybdopterin cofactor binding / iron-sulfur cluster binding / NADH dehydrogenase activity / respiratory electron transport chain / 4 iron, 4 sulfur cluster binding / oxidoreductase activity / metal ion binding / membrane / plasma membrane 類似検索 - 分子機能
ジャーナル: Science / 年: 2021 タイトル: Three-megadalton complex of methanogenic electron-bifurcating and CO-fixing enzymes. 著者: Tomohiro Watanabe / Olivia Pfeil-Gardiner / Jörg Kahnt / Jürgen Koch / Seigo Shima / Bonnie J Murphy / 要旨: The first reaction of the methanogenic pathway from carbon dioxide (CO) is the reduction and condensation of CO to formyl-methanofuran, catalyzed by formyl-methanofuran dehydrogenase (Fmd). Strongly ...The first reaction of the methanogenic pathway from carbon dioxide (CO) is the reduction and condensation of CO to formyl-methanofuran, catalyzed by formyl-methanofuran dehydrogenase (Fmd). Strongly reducing electrons for this reaction are generated by heterodisulfide reductase (Hdr) in complex with hydrogenase or formate dehydrogenase (Fdh) using a flavin-based electron-bifurcation mechanism. Here, we report enzymological and structural characterizations of Fdh-Hdr-Fmd complexes from . The complexes catalyze this reaction using electrons from formate and the reduced form of the electron carrier F. Conformational changes in HdrA mediate electron bifurcation, and polyferredoxin FmdF directly transfers electrons to the CO reduction site, as evidenced by methanofuran-dependent flavin-based electron bifurcation even without free ferredoxin, a diffusible electron carrier between Hdr and Fmd. Conservation of Hdr and Fmd structures suggests that this complex is common among hydrogenotrophic methanogens.
ダウンロード / ファイル: emd_12210.map.gz / 形式: CCP4 / 大きさ: 307.5 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
注釈
Composite map of the heterodislfide reductase core and mobile arm in state 1 of the formate dehydrogenase - heterodisulfide reductase - formylmethanofuran dehydrogenase complex from M. hungatei
モデルのタイプ: OTHER 詳細: ab initio model generation, stochastic gradient descent, Relion 3
最終 再構成
使用したクラス数: 1 / 想定した対称性 - 点群: C1 (非対称) / 解像度のタイプ: BY AUTHOR / 解像度: 3.0 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: RELION (ver. 3.1) 詳細: This applies to the map of the mobile arm in state1. The uploaded map is a composite map. 使用した粒子像数: 277450
初期 角度割当
タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: RELION (ver. 3.1)
最終 角度割当
タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: RELION (ver. 3.1)
PDB-7bkd: Formate dehydrogenase - heterodisulfide reductase - formylmethanofuran dehydrogenase complex from Methanospirillum hungatei (heterodislfide reductase core and mobile arm in conformational state 1, composite structure)