2GT5

Solution structure of apo Human Sco1

2GT5 の概要

• エントリーDOI: 10.2210/pdb2gt5/pdb
• 関連するPDBエントリー: 2GQK 2GQL 2GQM 2GT6
• 分子名称: SCO1 protein homolog, mitochondrial (1 entity in total)
• 機能のキーワード: thioredoxin-like fold, metalloprotein, structural genomics, structural proteomics in europe, spine, metal transport
• 由来する生物種: Homo sapiens (human)
• 細胞内の位置: Mitochondrion: O75880
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 19712.28

構造登録者

Banci, L.,Bertini, I.,Calderone, V.,Ciofi-Baffoni, S.,Mangani, S.,Palumaa, P.,Martinelli, M.,Wang, S.,Structural Proteomics in Europe (SPINE) (登録日: 2006-04-27, 公開日: 2006-06-06, 最終更新日: 2024-05-29)

主引用文献

Banci, L.,Bertini, I.,Calderone, V.,Ciofi-Baffoni, S.,Mangani, S.,Martinelli, M.,Palumaa, P.,Wang, S.
A hint for the function of human Sco1 from different structures.
Proc.Natl.Acad.Sci.Usa, 103:8595-8600, 2006

PubMed Abstract: The solution structures of apo, Cu(I), and Ni(II) human Sco1 have been determined. The protein passes from an open and conformationally mobile state to a closed and rigid conformation upon metal binding as shown by electrospray ionization MS and NMR data. The metal ligands of Cu(I) are two Cys residues of the CPXXCP motif and a His residue. The latter is suitably located to coordinate the metal anchored by the two Cys residues. The coordination sphere of Ni(II) in solution is completed by another ligand, possibly Asp. Crystals of the Ni(II) derivative were also obtained with the Ni(II) ion bound to the same His residue and to the two oxidized Cys residues of the CPXXCP motif. We propose that the various structures solved here represent the various states of the protein in its functional cycle and that the metal can be bound to the oxidized protein at a certain stage. Although it now seems reasonable that Sco1, which is characterized by a thioredoxin fold, has evolved to bind a metal atom via the di-Cys motif to act as a copper chaperone, the oxidized form of the nickel-bound protein suggests that it may also maintain the thioredoxin function.

PubMed: 16735468
DOI: 10.1073/pnas.0601375103

実験手法

SOLUTION NMR