1BS7

PEPTIDE DEFORMYLASE AS NI2+ CONTAINING FORM

1BS7 の概要

• エントリーDOI: 10.2210/pdb1bs7/pdb
• 関連するPDBエントリー: 1BS4 1BS5 1BS6 1BS8 1BSZ
• 分子名称: PROTEIN (PEPTIDE DEFORMYLASE), NICKEL (II) ION, SULFATE ION, ... (4 entities in total)
• 機能のキーワード: hydrolase, iron metalloprotease; protein synthesis
• 由来する生物種: Escherichia coli
• タンパク質・核酸の鎖数: 3
• 化学式量合計: 58046.95

構造登録者

Becker, A.,Schlichting, I.,Kabsch, W.,Groche, D.,Schultz, S.,Wagner, A.F.V. (登録日: 1998-09-01, 公開日: 1999-08-27, 最終更新日: 2023-08-09)

主引用文献

Becker, A.,Schlichting, I.,Kabsch, W.,Schultz, S.,Wagner, A.F.
Structure of peptide deformylase and identification of the substrate binding site.
J.Biol.Chem., 273:11413-11416, 1998

PubMed Abstract: Peptide deformylase is an essential metalloenzyme required for the removal of the formyl group at the N terminus of nascent polypeptide chains in eubacteria. The Escherichia coli enzyme uses Fe2+ and nearly retains its activity on substitution of the metal ion by Ni2+. We have solved the structure of the Ni2+ enzyme at 1.9-A resolution by x-ray crystallography. Each of the three monomers in the asymmetric unit contains one Ni2+ ion and, in close proximity, one molecule of polyethylene glycol. Polyethylene glycol is shown to be a competitive inhibitor with a KI value of 6 mM with respect to formylmethionine under conditions similar to those used for crystallization. We have also solved the structure of the inhibitor-free enzyme at 2.5-A resolution. The two structures are identical within the estimated errors of the models. The hydrogen bond network stabilizing the active site involves nearly all conserved amino acid residues and well defined water molecules, one of which ligates to the tetrahedrally coordinated Ni2+ ion.

PubMed: 9565550
DOI: 10.1074/jbc.273.19.11413

実験手法

X-RAY DIFFRACTION (2.5 Å)