手法: 蒸気拡散法 / pH: 8.2 詳細: Thrombin was purchased from Haematologic Technologies, Inc. and acetyl-hirudin from Bachem. Thrombin was prepared as described (Skrzpczak-Jankun et al., 1991). Thrombin (1.0 mg/ml in 50 mM ...詳細: Thrombin was purchased from Haematologic Technologies, Inc. and acetyl-hirudin from Bachem. Thrombin was prepared as described (Skrzpczak-Jankun et al., 1991). Thrombin (1.0 mg/ml in 50 mM HEPES, 50 % glycerol, pH 7.0) was incubated with 1.0 mM acetyl-hirudin for 1 hr at 4 deg C. Glycerol was removed and the complex concentrated with a centricon 10 (Amicon) to about 10 mg/ml as determined by the Biorad protein assay kit using bovine serum albumin. Crystals of thrombin-acetyl-hirudin were grown in hanging drops by vapor diffusion after streak seeding. The drops were made from 5 microliters of complex and 5 microliters of reservoir solution (0.10 M Tris, 0.50 M NaCl, 22 % (by volume) PEG 4K, pH 8.20)., VAPOR DIFFUSION
結晶化
*PLUS
pH: 7.5 / 手法: 蒸気拡散法, ハンギングドロップ法 / 詳細: used seeding
プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray
放射波長
波長: 1.5418 Å / 相対比: 1
反射
解像度: 1.31→44.16 Å / Num. all: 51674 / % possible obs: 69 % / Observed criterion σ(I): 0.8 / 冗長度: 2.2 % / Rmerge(I) obs: 0.071 / Net I/σ(I): 9.8
反射 シェル
解像度: 1.47→1.54 Å / Rmerge(I) obs: 0.371 / Mean I/σ(I) obs: 1.3 / % possible all: 35.8
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解析
ソフトウェア
名称
バージョン
分類
bioteX
(MSC)
データ収集
bioteX
(MSC)
データ削減
X-PLOR
3.1
モデル構築
Quanta
モデル構築
Insight II
モデル構築
X-PLOR
3.1
精密化
bioteX
データスケーリング
X-PLOR
3.1
位相決定
精密化
構造決定の手法: DIFFERENCE FOURIER PLUS REFINEMENT / 解像度: 1.47→7.5 Å / 交差検証法: X-PLOR / σ(F): 1.8 詳細: Met_H84, Met_H106, Met_H210, Glu_H97A, Glu_H217, Lys_H224, Ser_H27, and Glu_H192 were simultaneously refined in two conformations. No density was observed for Trp148, Thr149, Ala149A, ...詳細: Met_H84, Met_H106, Met_H210, Glu_H97A, Glu_H217, Lys_H224, Ser_H27, and Glu_H192 were simultaneously refined in two conformations. No density was observed for Trp148, Thr149, Ala149A, Asn149B, Val149C, Gly149D, and Lys149E in the autolysis loop, and these residues are not included in the model. Disordered waters include: HOH395 which is in a special position; HOH396 is close to a symmetry related equivalent of itself; HOH422 which is close to HOH432; HOH434 is close to a symmetry related equivalent of itself; HOH447 which is close to HOH494; (THE ABOVE WATERS HAVE VERY STRONG DENSITY AND THEIR REFINED OCCUPANCIES ARE SIGNIFICANTLY GREATER THAN UNITY. THEY MAY REFLECT A DIFFERENT STRUCTURAL FEATURE THAN DISORDERED WATERS). HOH495 which is close to HOH499; HOH504 which is close to HOH506; HOH578 which is close to a symmetry-related equivalent of HOH579; HOH580 WHICH IS CLOSE TO HOH578 AND TO A SYMMETRY-RELATED EQUIVALENT OF HOH579; HOH652 WHICH IS CLOSE TO HOH759; HOH687 WHICH IS CLOSE TO HOH688; HOH717 WHICH IS CLOSE TO THE SIDE CHAIN OF LYS_H145; HOH733 WHICH IS CLOSE TO THE SIDE CHAIN OF SER_L1E; HOH786 IS CLOSE TO A SYMMETRY RELATED EQUIVALENT OF ITSELF. HIS_H57 IS MONOPROTONATED ON THE DELTA NITROGEN. HIS_H91 AND HIS_ H119 ARE MONOPROTONATED ON THE EPSILON NITROGEN.