In contrast with the previously deposited in PDB structures of Equus caballus SA (PDB IDs: 3V08, ...In contrast with the previously deposited in PDB structures of Equus caballus SA (PDB IDs: 3V08, 4J2V, 4OT2, 4F5U, and 4F5T), a single point mutation, R561A, is observed. The long arginine side chain cannot be modeled in this position due to steric clashes with the nearby disulfide bond connecting Cys567 and Cys558 and a symmetry-related copy of the molecule. Moreover, there is no 2mFo-DFc omit map supporting placement of the side chain. Protein was purified from natural source, therefore there may be naturally occurring mutation. According to the NCBI database, this mutation is characteristic for Equus ferus przewalskii, a rare subspecies of wild horse from central Asia (accession code: XP_008524663.1). However it is possible that there is an error in the Equus caballus SA sequence, or the observed mutation naturally occurs in that species.
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実験情報
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実験
実験
手法: X線回折 / 使用した結晶の数: 1
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試料調製
結晶
マシュー密度: 2.73 Å3/Da / 溶媒含有率: 54.96 %
結晶化
温度: 289 K / 手法: 蒸気拡散法, シッティングドロップ法 / pH: 9 詳細: 1 ul of 32 mg/ml protein in 10 mM Tris pH 7.5, 150 mM NaCl was mixed with 1 ul of the well condition (100 mM Tris, 2.4 M Ammonium phosphate, final pH 9.0) and equilibrated against well ...詳細: 1 ul of 32 mg/ml protein in 10 mM Tris pH 7.5, 150 mM NaCl was mixed with 1 ul of the well condition (100 mM Tris, 2.4 M Ammonium phosphate, final pH 9.0) and equilibrated against well solution on 15-well Crystallization Plate (Qiagen)
解像度: 2.15→80.01 Å / Cor.coef. Fo:Fc: 0.961 / Cor.coef. Fo:Fc free: 0.944 / SU B: 13.678 / SU ML: 0.174 / SU R Cruickshank DPI: 0.2259 / 交差検証法: FREE R-VALUE / σ(F): 0 / ESU R: 0.226 / ESU R Free: 0.19 詳細: U VALUES : WITH TLS ADDED HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. There are four disordered loops in the structure: 54-66, 105-122, 166-176, 360-365 that contribute to higher than average RSRZ value.