ジャーナル: J.Am.Chem.Soc. / 年: 1998 タイトル: Inhibition of the Nmc-A B-Lactamase by a Penicillanic Acid Derivative, and the Structural Bases for the Increase in Substrate Profile of This Antibiotic Resistance Enzyme 著者: Mourey, L. / Swaren, P. / Miyashita, K. / Bulychev, A. / Mobashery, S. / Samama, J.P.
THE STRUCTURE DEPOSITED IS AN ACYL-ENZYME COMPLEX BETWEEN 6 ALPHA-(HYDROXYPROPYL)PENICILLANIC ACID ...THE STRUCTURE DEPOSITED IS AN ACYL-ENZYME COMPLEX BETWEEN 6 ALPHA-(HYDROXYPROPYL)PENICILLANIC ACID AND THE NMC-A BETA-LACTAMASE FROM ENTEROBACTER CLOACAE NOR-1. THE ACYLATED RESIDUE IS SER 70.
Has protein modification
Y
-
実験情報
-
実験
実験
手法: X線回折 / 使用した結晶の数: 1
-
試料調製
結晶
マシュー密度: 2.35 Å3/Da / 溶媒含有率: 47.2 %
結晶化
pH: 7.5 詳細: 20% (W/V)PEG 1500, 0.200 M MES PH 5.25, 6% (V/V) N-PROPANOL, pH 7.5
構造決定の手法: 分子置換 開始モデル: THE NMC-A BETA-LACTAMASE STRUCTURE 解像度: 1.89→18.6 Å / Rfactor Rfree error: 0.0064 / Data cutoff high absF: 100000 / Data cutoff low absF: 0.1 / 交差検証法: THROUGHOUT / σ(F): 0 詳細: BULK SOLVENT CORRECTION USED WITH A DENSITY OF 0.33 E-/A**3, SOLVENT RADIUS OF 0.25 ANGSTROMS AND B VALUES OF 50 A**2.
Rfactor
反射数
%反射
Selection details
Rfree
0.257
1625
7.3 %
RANDOM
Rwork
0.209
-
-
-
obs
0.209
22005
98.2 %
-
原子変位パラメータ
Biso mean: 13.1 Å2
Refine analyze
Luzzati d res low obs: 18.6 Å / Luzzati sigma a obs: 0.21 Å
精密化ステップ
サイクル: LAST / 解像度: 1.89→18.6 Å
タンパク質
核酸
リガンド
溶媒
全体
原子数
2048
0
53
191
2292
拘束条件
Refine-ID
タイプ
Dev ideal
X-RAY DIFFRACTION
x_bond_d
0.007
X-RAY DIFFRACTION
x_bond_d_na
X-RAY DIFFRACTION
x_bond_d_prot
X-RAY DIFFRACTION
x_angle_d
X-RAY DIFFRACTION
x_angle_d_na
X-RAY DIFFRACTION
x_angle_d_prot
X-RAY DIFFRACTION
x_angle_deg
1.4
X-RAY DIFFRACTION
x_angle_deg_na
X-RAY DIFFRACTION
x_angle_deg_prot
X-RAY DIFFRACTION
x_dihedral_angle_d
23.3
X-RAY DIFFRACTION
x_dihedral_angle_d_na
X-RAY DIFFRACTION
x_dihedral_angle_d_prot
X-RAY DIFFRACTION
x_improper_angle_d
1.2
X-RAY DIFFRACTION
x_improper_angle_d_na
X-RAY DIFFRACTION
x_improper_angle_d_prot
X-RAY DIFFRACTION
x_mcbond_it
X-RAY DIFFRACTION
x_mcangle_it
X-RAY DIFFRACTION
x_scbond_it
X-RAY DIFFRACTION
x_scangle_it
LS精密化 シェル
解像度: 1.89→1.98 Å / Rfactor Rfree error: 0.027 / Total num. of bins used: 8