The author states that in this structure, the alpha-imino group of alpha-iminoglutarate is ...The author states that in this structure, the alpha-imino group of alpha-iminoglutarate is protonated. As this ligand is the reaction intermediate and the alpha-imino group forms an ionic interaction with the negatively charged carboxylate group of an active site asparate, it is highly possible that this group of the ligand is in the protonated form. The existing ligand (2IT) represents the neutral alpha-amino group, therefore does not satisfy the correct ionization state of the ligand present in this structure.
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: 0.9537 Å / 相対比: 1
反射
解像度: 1.75→35 Å / Num. obs: 138857 / % possible obs: 99 % / 冗長度: 7.9 % / Rmerge(I) obs: 0.11 / Net I/σ(I): 13.4
反射 シェル
解像度: 1.75→1.85 Å / 冗長度: 7.9 % / Mean I/σ(I) obs: 1.9 / CC1/2: 0.69 / % possible all: 99.9
-
解析
ソフトウェア
名称
バージョン
分類
REFMAC
5.8.0135
精密化
XDS
データ削減
XSCALE
データスケーリング
REFMAC
位相決定
精密化
構造決定の手法: 分子置換 / 解像度: 1.75→34 Å / Cor.coef. Fo:Fc: 0.975 / Cor.coef. Fo:Fc free: 0.971 / SU B: 1.431 / SU ML: 0.042 / 交差検証法: THROUGHOUT / ESU R: 0.055 / ESU R Free: 0.056 / 立体化学のターゲット値: MAXIMUM LIKELIHOOD / 詳細: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
Rfactor
反射数
%反射
Selection details
Rfree
0.16921
6920
5 %
RANDOM
Rwork
0.15545
-
-
-
obs
0.15613
131488
98.95 %
-
溶媒の処理
イオンプローブ半径: 0.8 Å / 減衰半径: 0.8 Å / VDWプローブ半径: 1.2 Å / 溶媒モデル: MASK