3AF9

Crystal Structure of Pd(allyl)/apo-C48AFr

3AF9 の概要

• エントリーDOI: 10.2210/pdb3af9/pdb
• 関連するPDBエントリー: 3AF7 3AF8
• 分子名称: Ferritin light chain, SULFATE ION, CADMIUM ION, ... (7 entities in total)
• 機能のキーワード: iron storage protein, light chain ferritin, artificial metalloprotein, metal binding protein
• 由来する生物種: Equus caballus (domestic horse, equine)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 20962.05

構造登録者

Abe, S.,Hikage, T.,Watanabe, Y.,Kitagawa, S.,Ueno, T. (登録日: 2010-02-24, 公開日: 2010-08-11, 最終更新日: 2023-11-01)

主引用文献

Abe, S.,Hikage, T.,Watanabe, Y.,Kitagawa, S.,Ueno, T.
Mechanism of Accumulation and Incorporation of Organometallic Pd Complexes into the Protein Nanocage of apo-Ferritin.
Inorg.Chem., 49:6967-6973, 2010

PubMed Abstract: Hybridization of metal complexes and protein scaffolds is an important subject in bioinorganic chemistry and materials science. Efforts to provide non-natural functions to proteins will likely lead to advances in development of catalysts, sensors, and so on. Mechanistic investigations of the process of binding of metal complexes within protein scaffolds and characterization of the resulting coordination structures will help us to design and control coordination structures of metal complexes for construction of hybrid proteins containing metal complexes. In this work, the processes of accumulation and incorporation of organometallic palladium complexes within the cage of the iron storage protein apo-ferritin (apo-Fr) are elucidated by analysis of X-ray crystal structures of apo-Fr and selected mutants thereof, in the presence of the metal complexes. The crystal structure of apo-Fr containing Pd(allyl) (allyl = eta(3)-C(3)H(5)) complexes shows that thiolato-bridged dinuclear Pd(allyl) complexes are formed at two binding sites within the cage of apo-Fr. The crystal structures of apo-Fr and its Cys- and His-deletion mutants containing Pd(allyl) complexes indicate that Cys126 accelerates the incorporation of Pd(allyl) complexes into the cage. In addition, Cys48 and Cys126 are essential for accumulation of Pd(allyl) complexes and stabilizing the square planar coordination structure.

PubMed: 20586408
DOI: 10.1021/ic1003758

実験手法

X-RAY DIFFRACTION (1.85 Å)