2HUK

Crystal structure of T4 Lysozyme V131C synthetic dimer

2HUK の概要

• エントリーDOI: 10.2210/pdb2huk/pdb
• 関連するPDBエントリー: 2HUL 2HUM
• 分子名称: Lysozyme, SULFATE ION (3 entities in total)
• 機能のキーワード: t4 lysozyme synthetic dimer, hydrolase
• 由来する生物種: Enterobacteria phage T4
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 19016.63

構造登録者

Banatao, D.R.,Cascio, D.,Yeates, T.O. (登録日: 2006-07-26, 公開日: 2006-10-17, 最終更新日: 2024-11-20)

主引用文献

Banatao, D.R.,Cascio, D.,Crowley, C.S.,Fleissner, M.R.,Tienson, H.L.,Yeates, T.O.
An approach to crystallizing proteins by synthetic symmetrization.
Proc.Natl.Acad.Sci.Usa, 103:16230-16235, 2006

PubMed Abstract: Previous studies of symmetry preferences in protein crystals suggest that symmetric proteins, such as homodimers, might crystallize more readily on average than asymmetric, monomeric proteins. Proteins that are naturally monomeric can be made homodimeric artificially by forming disulfide bonds between individual cysteine residues introduced by mutagenesis. Furthermore, by creating a variety of single-cysteine mutants, a series of distinct synthetic dimers can be generated for a given protein of interest, with each expected to gain advantage from its added symmetry and to exhibit a crystallization behavior distinct from the other constructs. This strategy was tested on phage T4 lysozyme, a protein whose crystallization as a monomer has been studied exhaustively. Experiments on three single-cysteine mutants, each prepared in dimeric form, yielded numerous novel crystal forms that cannot be realized by monomeric lysozyme. Six new crystal forms have been characterized. The results suggest that synthetic symmetrization may be a useful approach for enlarging the search space for crystallizing proteins.

PubMed: 17050682
DOI: 10.1073/pnas.0607674103

実験手法

X-RAY DIFFRACTION (2 Å)