3SER

Zn-mediated Polymer of Maltose-binding Protein K26H/K30H by Synthetic Symmetrization

3SER の概要

• エントリーDOI: 10.2210/pdb3ser/pdb
• 関連するPDBエントリー: 3SES 3SET 3SEU 3SEV 3SEW 3SEX 3SEY
• 関連するBIRD辞書のPRD_ID: PRD_900001
• 分子名称: Maltose-binding periplasmic protein, alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose, CHLORIDE ION, ... (6 entities in total)
• 機能のキーワード: metal-mediated synthetic symmetrization, synthetic symmetrization, sugar binding protein
• 由来する生物種: Escherichia coli
• 細胞内の位置: Periplasm: P0AEX9
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 82241.68

構造登録者

Zhao, M.,Soriaga, A.B.,Laganowsky, A.,Sawaya, M.R.,Cascio, D.,Yeates, T.O. (登録日: 2011-06-11, 公開日: 2011-09-21, 最終更新日: 2024-02-28)

主引用文献

Laganowsky, A.,Zhao, M.,Soriaga, A.B.,Sawaya, M.R.,Cascio, D.,Yeates, T.O.
An approach to crystallizing proteins by metal-mediated synthetic symmetrization.
Protein Sci., 20:1876-1890, 2011

PubMed Abstract: Combining the concepts of synthetic symmetrization with the approach of engineering metal-binding sites, we have developed a new crystallization methodology termed metal-mediated synthetic symmetrization. In this method, pairs of histidine or cysteine mutations are introduced on the surface of target proteins, generating crystal lattice contacts or oligomeric assemblies upon coordination with metal. Metal-mediated synthetic symmetrization greatly expands the packing and oligomeric assembly possibilities of target proteins, thereby increasing the chances of growing diffraction-quality crystals. To demonstrate this method, we designed various T4 lysozyme (T4L) and maltose-binding protein (MBP) mutants and cocrystallized them with one of three metal ions: copper (Cu²⁺, nickel (Ni²⁺), or zinc (Zn²⁺). The approach resulted in 16 new crystal structures--eight for T4L and eight for MBP--displaying a variety of oligomeric assemblies and packing modes, representing in total 13 new and distinct crystal forms for these proteins. We discuss the potential utility of the method for crystallizing target proteins of unknown structure by engineering in pairs of histidine or cysteine residues. As an alternate strategy, we propose that the varied crystallization-prone forms of T4L or MBP engineered in this work could be used as crystallization chaperones, by fusing them genetically to target proteins of interest.

PubMed: 21898649
DOI: 10.1002/pro.727

実験手法

X-RAY DIFFRACTION (2.35 Å)