- PDB-4zvy: Structure of human ALDH7A1 complexed with NAD+ in space group P4212 -
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基本情報
登録情報
データベース: PDB / ID: 4zvy
タイトル
Structure of human ALDH7A1 complexed with NAD+ in space group P4212
要素
Alpha-aminoadipic semialdehyde dehydrogenase
キーワード
OXIDOREDUCTASE / aldehyde dehydrogenase / NAD / lysine catabolism
機能・相同性
機能・相同性情報
negative regulation of endosome to plasma membrane protein transport / L-aminoadipate-semialdehyde dehydrogenase [NAD(P)+] activity / L-aminoadipate-semialdehyde dehydrogenase / Choline catabolism / negative regulation of Golgi to plasma membrane protein transport / L-lysine catabolic process / choline catabolic process / Lysine catabolism / : / betaine-aldehyde dehydrogenase (NAD+) activity ...negative regulation of endosome to plasma membrane protein transport / L-aminoadipate-semialdehyde dehydrogenase [NAD(P)+] activity / L-aminoadipate-semialdehyde dehydrogenase / Choline catabolism / negative regulation of Golgi to plasma membrane protein transport / L-lysine catabolic process / choline catabolic process / Lysine catabolism / : / betaine-aldehyde dehydrogenase (NAD+) activity / betaine-aldehyde dehydrogenase / glycine betaine biosynthetic process from choline / aldehyde metabolic process / plasma membrane to endosome transport / aldehyde dehydrogenase (NAD+) / Golgi to endosome transport / aldehyde dehydrogenase (NAD+) activity / oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor / endosome to lysosome transport / negative regulation of ferroptosis / energy homeostasis / sensory perception of sound / mitochondrial matrix / Golgi membrane / mitochondrion / extracellular exosome / identical protein binding / nucleus / plasma membrane / cytosol 類似検索 - 分子機能
Aldehyde dehydrogenase family 7 member A1-like / Aldehyde Dehydrogenase; Chain A, domain 2 / Aldehyde Dehydrogenase; Chain A, domain 2 / Aldehyde Dehydrogenase; Chain A, domain 1 / Aldehyde Dehydrogenase; Chain A, domain 1 / Aldehyde dehydrogenase, glutamic acid active site / Aldehyde dehydrogenases glutamic acid active site. / Aldehyde dehydrogenase domain / Aldehyde dehydrogenase family / Aldehyde dehydrogenase, C-terminal ...Aldehyde dehydrogenase family 7 member A1-like / Aldehyde Dehydrogenase; Chain A, domain 2 / Aldehyde Dehydrogenase; Chain A, domain 2 / Aldehyde Dehydrogenase; Chain A, domain 1 / Aldehyde Dehydrogenase; Chain A, domain 1 / Aldehyde dehydrogenase, glutamic acid active site / Aldehyde dehydrogenases glutamic acid active site. / Aldehyde dehydrogenase domain / Aldehyde dehydrogenase family / Aldehyde dehydrogenase, C-terminal / Aldehyde dehydrogenase, N-terminal / Aldehyde/histidinol dehydrogenase / 3-Layer(aba) Sandwich / Alpha Beta 類似検索 - ドメイン・相同性
ジャーナル: Biochemistry / 年: 2015 タイトル: Structural Basis of Substrate Recognition by Aldehyde Dehydrogenase 7A1. 著者: Min Luo / John J Tanner / 要旨: Aldehyde dehydrogenase 7A1 (ALDH7A1) is part of lysine catabolism and catalyzes the NAD(+)-dependent oxidation of α-aminoadipate semialdehyde to α-aminoadipate. Herein, we describe a structural ...Aldehyde dehydrogenase 7A1 (ALDH7A1) is part of lysine catabolism and catalyzes the NAD(+)-dependent oxidation of α-aminoadipate semialdehyde to α-aminoadipate. Herein, we describe a structural study of human ALDH7A1 focused on substrate recognition. Five crystal structures and small-angle X-ray scattering data are reported, including the first crystal structure of any ALDH7 family member complexed with α-aminoadipate. The product binds with the ε-carboxylate in the oxyanion hole, the aliphatic chain packed into an aromatic box, and the distal end of the product anchored by electrostatic interactions with five conserved residues. This binding mode resembles that of glutamate bound to the proline catabolic enzyme ALDH4A1. Analysis of ALDH7A1 and ALDH4A1 structures suggests key interactions that underlie substrate discrimination. Structures of apo ALDH7A1 reveal dramatic conformational differences from the product complex. Product binding is associated with a 16 Å movement of the C-terminus into the active site, which stabilizes the active conformation of the aldehyde substrate anchor loop. The fact that the C-terminus is part of the active site was hitherto unknown. Interestingly, the C-terminus and aldehyde anchor loop are disordered in a new tetragonal crystal form of the apoenzyme, implying that these parts of the enzyme are highly flexible. Our results suggest that the active site of ALDH7A1 is disassembled when the aldehyde site is vacant, and the C-terminus is a mobile element that forms quaternary structural interactions that aid aldehyde binding. These results are relevant to the c.1512delG genetic deletion associated with pyridoxine-dependent epilepsy, which alters the C-terminus of ALDH7A1.