- PDB-4afd: Structural and biochemical characterization of a novel Carbohydra... -
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IDまたはキーワード:
読み込み中...
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基本情報
登録情報
データベース: PDB / ID: 4afd
タイトル
Structural and biochemical characterization of a novel Carbohydrate Binding Module of endoglucanase Cel5A from Eubacterium cellulosolvens with a partially bound cellotetraose moeity.
要素
ENDOGLUCANASE CEL5A
キーワード
HYDROLASE / FAMILY 5 GLYCOSIDE HYDROLASE / CELLULOSOME / CELLOTETRAOSE
機能・相同性
機能・相同性情報
beta-glucosidase activity / cellulose catabolic process / cell surface / extracellular region 類似検索 - 分子機能
BETA-D-GLUCOSE (BGC): THE LIGAND IS CELLOTETRAOSE MOIETY OF A CELLOHEXAOSE SUBSTRATE USED IN A ...BETA-D-GLUCOSE (BGC): THE LIGAND IS CELLOTETRAOSE MOIETY OF A CELLOHEXAOSE SUBSTRATE USED IN A COCRYSTALLISATION EXPERIMENT, IE B-D-GLUCOPYRANOSYL-1,4-B-D-GLUCOPYRANOSYL-1, 4-B-D-GLUCOPYRANOSYL-1,4-B-D-GLUCOPYRANOSE.
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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: 2.23 Å3/Da / 溶媒含有率: 45.05 % / 解説: NONE
結晶化
温度: 292 K / pH: 4.6 詳細: 101 MG/ML PROTEIN COCRYSTALLISED WITH 1 0 MM CELLOHEXAOSE AT 292 K WITH 0.2 M AMMONIUM SULFATE, 0.1 M SODIUM ACETATE TRIHYDRATE PH 4.6, 26% W/V PEG 2K MME. 30% GLYCEROL WAS USED AS ...詳細: 101 MG/ML PROTEIN COCRYSTALLISED WITH 1 0 MM CELLOHEXAOSE AT 292 K WITH 0.2 M AMMONIUM SULFATE, 0.1 M SODIUM ACETATE TRIHYDRATE PH 4.6, 26% W/V PEG 2K MME. 30% GLYCEROL WAS USED AS CRYOPROTECTANT IN MOTHER LIQUOR SOLUTION.
解像度: 1.34→42.24 Å / Cor.coef. Fo:Fc: 0.965 / Cor.coef. Fo:Fc free: 0.96 / SU B: 1.394 / SU ML: 0.029 / 交差検証法: THROUGHOUT / ESU R: 0.054 / ESU R Free: 0.055 / 立体化学のターゲット値: MAXIMUM LIKELIHOOD 詳細: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. HYDROGENS HAVE BEEN USED IF PRESENT IN THE INPUT. U VALUES REFINED INDIVIDUALLY. ASP A118 HAS BEEN GIVEN DUAL CONFORMATION. IN ONE FORM IT ...詳細: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. HYDROGENS HAVE BEEN USED IF PRESENT IN THE INPUT. U VALUES REFINED INDIVIDUALLY. ASP A118 HAS BEEN GIVEN DUAL CONFORMATION. IN ONE FORM IT APPEARS TO HAVE REACTED WITH THE NH OF GLY A119 TO FORM A CYCLIC ENTITY, POSSIBLY OWING TO RADIATION DAMAGE. SER A45, GLU A51, ASP A59, GLN A67, GLN A71, ILE A83, GLU A100, LYS A104, ILE A111, SER A112, VAL A116, LYS A130, VAL A160, AND SER A112 ALSO HAVE ALTERNATE CONFORMATIONS. PHENIX-1.7.2-869 WAS ALSO USED FOR OCCUPANCY REFINEMENT AND FOR TLS GROUP DETERMINATION AS A PENULTIMATE STEP. RESIDUES A38 AND A166-170 ARE DISORDERED. DISORDERED SIDE CHAINS WERE MODELED STEREOCHEMICALLY. THIS DATASET HAS SPURIOUS ELECTRON DENSITY ACROSS THE POTENTIAL BINDING CLEFT. INITIALLY, A SINGLE GLUCOSE SUBUNIT WAS MODELLED INTO THE DENSITY BETWEEN TRP 108 AND THE SYMMETRY-RELATED TYR 114 AND THE MODEL WAS REFINED. SUBSEQUENTLY, A SECOND GLUCOSE SUBUNIT WAS MODELLED IN THE ELECTRON DENSITY ABOVE TRP 55. BASED ON THESE TWO SUBUNITS, A CELLOTETRAOSE MOIETY WAS DOCKED ON TO THE SURFACE AND THE LIGAND FITTING PROGRAM IN ARP/WARP WAS USED TO FIT IT BASED ON THE ELECTRON DENSITY. THIS IT DID WITH A MAP DENSITY CORRELATION OF 0.73. THE CELLOTETRAOSE MOIETY (BGC A1167-A1170) CAN ALSO BE BUILT EQUALLY WELL IN THE OPPOSITE ORIENTATION AND SHOULD BE REGARDED AS WEAKLY/PARTIALLY BOUND.
Rfactor
反射数
%反射
Selection details
Rfree
0.18681
1522
5 %
RANDOM
Rwork
0.16548
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obs
0.16655
29148
96.11 %
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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