1OBA

Multimodular Pneumococcal Cell Wall Endolysin from phage Cp-1 complexed with choline

1OBA の概要

• エントリーDOI: 10.2210/pdb1oba/pdb
• 関連するPDBエントリー: 1H09
• 分子名称: LYSOZYME, CHOLINE ION (3 entities in total)
• 機能のキーワード: hydrolase, murein hydrolase, choline, lysozyme, multimodular, phage cp- 1 lysin, pneumococcal cell wall degradation, hydrolase glycosidase, bacterilytic enzyme
• 由来する生物種: BACTERIOPHAGE CP-1
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 39489.82

構造登録者

Hermoso, J.A.,Monterroso, B.,Albert, A.,Garcia, P.,Menendez, M.,Martinez-Ripoll, M.,Garcia, J.L. (登録日: 2003-01-29, 公開日: 2003-10-17, 最終更新日: 2023-12-13)

主引用文献

Hermoso, J.A.,Monterroso, B.,Albert, A.,Galan, B.,Ahrazem, O.,Garcia, P.,Martinez-Ripoll, M.,Garcia, J.L.,Menendez, M.
Structural Basis for Selective Recognition of Pneumococcal Cell Wall by Modular Endolysin from Phage Cp-1.
Structure, 11:1239-, 2003

PubMed Abstract: Pneumococcal bacteriophage-encoded lysins are modular choline binding proteins that have been shown to act as enzymatic antimicrobial agents (enzybiotics) against streptococcal infections. Here we present the crystal structures of the free and choline bound states of the Cpl-1 lysin, encoded by the pneumococcal phage Cp-1. While the catalytic module displays an irregular (beta/alpha)(5)beta(3) barrel, the cell wall-anchoring module is formed by six similar choline binding repeats (ChBrs), arranged into two different structural regions: a left-handed superhelical domain configuring two choline binding sites, and a beta sheet domain that contributes in bringing together the whole structure. Crystallographic and site-directed mutagenesis studies allow us to propose a general catalytic mechanism for the whole glycoside hydrolase family 25. Our work provides the first complete structure of a member of the large family of choline binding proteins and reveals that ChBrs are versatile elements able to tune the evolution and specificity of the pneumococcal surface proteins.

PubMed: 14527392
DOI: 10.1016/J.STR.2003.09.005

実験手法

X-RAY DIFFRACTION (2.45 Å)