1OZU

Crystal Structure of Familial ALS Mutant S134N of human Cu,Zn Superoxide Dismutase (CuZnSOD) to 1.3A resolution

1OZU の概要

• エントリーDOI: 10.2210/pdb1ozu/pdb
• 関連するPDBエントリー: 1OEZ 1OZT
• 分子名称: Superoxide dismutase [Cu-Zn], ZINC ION, SULFATE ION, ... (4 entities in total)
• 機能のキーワード: beta barrel, amyloid-like linear filaments, oxidoreductase
• 由来する生物種: Homo sapiens (human)
• 細胞内の位置: Cytoplasm: P00441
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 32129.52

構造登録者

Elam, J.S.,Taylor, A.B.,Strange, R.,Antonyuk, S.,Doucette, P.A.,Rodriguez, J.A.,Hasnain, S.S.,Hayward, L.J.,Valentine, J.S.,Yeates, T.O.,Hart, P.J. (登録日: 2003-04-09, 公開日: 2003-05-27, 最終更新日: 2024-12-25)

主引用文献

Elam, J.S.,Taylor, A.B.,Strange, R.,Antonyuk, S.,Doucette, P.A.,Rodriguez, J.A.,Hasnain, S.S.,Hayward, L.J.,Valentine, J.S.,Yeates, T.O.,Hart, P.J.
Amyloid-like Filaments and Water-filled Nanotubes Formed by SOD1 Mutant Proteins Linked to Familial ALS
Nat.Struct.Biol., 10:461-467, 2003

PubMed Abstract: Mutations in the SOD1 gene cause the autosomal dominant, neurodegenerative disorder familial amyotrophic lateral sclerosis (FALS). In spinal cord neurons of human FALS patients and in transgenic mice expressing these mutant proteins, aggregates containing FALS SOD1 are observed. Accumulation of SOD1 aggregates is believed to interfere with axonal transport, protein degradation and anti-apoptotic functions of the neuronal cellular machinery. Here we show that metal-deficient, pathogenic SOD1 mutant proteins crystallize in three different crystal forms, all of which reveal higher-order assemblies of aligned beta-sheets. Amyloid-like filaments and water-filled nanotubes arise through extensive interactions between loop and beta-barrel elements of neighboring mutant SOD1 molecules. In all cases, non-native conformational changes permit a gain of interaction between dimers that leads to higher-order arrays. Normal beta-sheet-containing proteins avoid such self-association by preventing their edge strands from making intermolecular interactions. Loss of this protection through conformational rearrangement in the metal-deficient enzyme could be a toxic property common to mutants of SOD1 linked to FALS.

PubMed: 12754496
DOI: 10.1038/nsb935

実験手法

X-RAY DIFFRACTION (1.3 Å)