THERE ARE TWO COMPLEXES PER ASYMMETRIC UNIT. EACH COMPLEX CONSISTS OF ONE MOLECULE OF THROMBIN AND ONE MOLECULE OF HIRUDIN 51 - 65. THROMBIN IN COMPLEX 1 IS ALPHA-THROMBIN AND IS CLEAVED BETWEEN RESIDUES 15 AND 16. CHAIN INDICATOR *L* IS USED FOR RESIDUES 1H - 15, CHAIN INDICATOR *H* IS CHAIN INDICATOR *H* IS USED FOR RESIDUES 16 - 246, AND CHAIN INDICATOR *I* IS USED FOR THE PEPTIDE. THROMBIN IN COMPLEX 2 IS EPSILON THROMBIN AND, IN ADDITION TO THE CUT BETWEEN RESIDUES 15 AND 16, IT IS ALSO CLEAVED BETWEEN RESIDUES 149A AND 149B. CHAIN INDICATORS IN COMPLEX 2 ARE *M* FOR RESIDUES 1H - 15, *F* FOR RESIDUES 15 - 149A, *G* FOR RESIDUES 149B - 247, AND *J* FOR THE PEPTIDE.
CHYMOTRYPSINOGEN NUMBERING (RATHER THAN SEQUENTIAL) SYSTEM IS USED FOR THROMBIN, BASED ON THE ...CHYMOTRYPSINOGEN NUMBERING (RATHER THAN SEQUENTIAL) SYSTEM IS USED FOR THROMBIN, BASED ON THE TOPOLOGICAL ALIGNMENT WITH THE STRUCTURE OF CHYMOTRYPSINOGEN (H. BRANDSTETTER ET AL., 1992, J. MOL. BIOL., V. 226, 1085). THE NUMBERING FOR THE PEPTIDE CORRESPONDS TO THE C-TERMINAL RESIDUES OF HIRUDIN.
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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: 2.62 Å3/Da / 溶媒含有率: 53.13 %
結晶化
手法: 蒸気拡散法, ハンギングドロップ法 / pH: 8 詳細: HANGING DROP, RESERVOIRS CONTAINING 39% SATURATED AMMONIUM SULFATE, 0.25 M AMMONIUM PHOSPHATE PH 8.0 AND 1% PEG4000. DROPS CONSISTED OF EQUAL VOLUMES OF RESERVOIR AND PROTEIN SOLUTION ...詳細: HANGING DROP, RESERVOIRS CONTAINING 39% SATURATED AMMONIUM SULFATE, 0.25 M AMMONIUM PHOSPHATE PH 8.0 AND 1% PEG4000. DROPS CONSISTED OF EQUAL VOLUMES OF RESERVOIR AND PROTEIN SOLUTION CONTAINING 23.5 MG/ML PROTEIN., vapor diffusion - hanging drop
結晶化
*PLUS
温度: 295 K / 手法: 蒸気拡散法, ハンギングドロップ法
溶液の組成
*PLUS
ID
濃度
一般名
Crystal-ID
Sol-ID
1
11.75mg/ml
peptide
1
drop
3
19.5 %sat
ammoniumsulfate
1
drop
4
0.25M
ammoniumphosphate
1
drop
5
0.5 %
PEG4000
1
drop
6
39 %sat
ammoniumsulfate
1
reservoir
7
1 %
PEG4000
1
reservoir
8
0.25M
ammoniumphosphate
1
reservoir
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データ収集
回折
平均測定温度: 295 K
放射光源
由来: 回転陽極 / タイプ: RIGAKU RUH2R / 波長: 1.5418
検出器
タイプ: SIEMENS / 検出器: AREA DETECTOR
放射
モノクロメーター: GRAPHITE(002) / 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
最高解像度: 3.2 Å / Num. obs: 11300 / % possible obs: 80 % / Observed criterion σ(I): 0 / 冗長度: 2.8 % / Rsym value: 0.126 / Net I/σ(I): 7
反射 シェル
解像度: 3.2→3.4 Å / Mean I/σ(I) obs: 2 / % possible all: 41
反射
*PLUS
Rmerge(I) obs: 0.126
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解析
ソフトウェア
名称
バージョン
分類
XENGEN
データ収集
XENGEN
データ削減
X-PLOR
3.1
モデル構築
X-PLOR
3.1
精密化
XENGEN
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: 分子置換, GRAPHICS 開始モデル: BOVINE THROMBIN IN COMPLEX WITH HIRUDIN 解像度: 3.2→7 Å / σ(F): 2 詳細: RESIDUES 51, 54, 62, 64, AND 65 OF PEPTIDE 1 HAVE POOR DENSITY. MOST OF PEPTIDE 2 IS EFFECTIVELY DISORDERED WITH RESIDUES 53, 54, 58, 59, 60, 61, 64, 65 HAVING POOR DENSITY. EXCEPT FOR A FEW ...詳細: RESIDUES 51, 54, 62, 64, AND 65 OF PEPTIDE 1 HAVE POOR DENSITY. MOST OF PEPTIDE 2 IS EFFECTIVELY DISORDERED WITH RESIDUES 53, 54, 58, 59, 60, 61, 64, 65 HAVING POOR DENSITY. EXCEPT FOR A FEW RESIDUES, THE TWO THROMBINS ARE GENERALLY WELL DEFINED IN THE ELECTRON DENSITY MAPS FOR RESIDUES 1C - 14K AND 16 - 243.