- PDB-2v45: A New Catalytic Mechanism of Periplasmic Nitrate Reductase from D... -
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基本情報
登録情報
データベース: PDB / ID: 2v45
タイトル
A New Catalytic Mechanism of Periplasmic Nitrate Reductase from Desulfovibrio desulfuricans ATCC 27774 from Crystallographic and EPR Data and based on detailed analysis of the sixth ligand
要素
PERIPLASMIC NITRATE REDUCTASE
キーワード
OXIDOREDUCTASE / NITRATE ASSIMILATION / NITROGENOUS ACCEPTOR / IRON / TRANSPORT / MOLYBDENUM / PERIPLASMIC / DISULFIDE BOND / ELECTRON TRANSPORT / IRON-SULFUR / METAL-BINDING / DISSIMILATORY NITRATE REDUCTASE / MOLYBDOPTERIN COFACTOR / SULFIDO LIGAND / 4FE-4S CLUSTER / ELECTRON PARAMAGNETIC RESONANCE
機能・相同性
機能・相同性情報
nitrate reductase (cytochrome) / nitrate reductase (cytochrome) activity / molybdenum ion binding / Mo-molybdopterin cofactor biosynthetic process / molybdopterin cofactor binding / nitrate assimilation / 4 iron, 4 sulfur cluster binding / periplasmic space / electron transfer activity / iron ion binding 類似検索 - 分子機能
SHEET DETERMINATION METHOD: DSSP THE SHEETS PRESENTED AS "AG" IN EACH CHAIN ON SHEET RECORDS BELOW ... SHEET DETERMINATION METHOD: DSSP THE SHEETS PRESENTED AS "AG" IN EACH CHAIN ON SHEET RECORDS BELOW IS ACTUALLY AN 6-STRANDED BARREL THIS IS REPRESENTED BY A 7-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS ARE IDENTICAL.
THE RESIDUE A 813 WAS ORIGINALLY DEPOSITED AS A ISOLATED SULFUR ATOM. AS PART OF REMEDIATION, THIS ...THE RESIDUE A 813 WAS ORIGINALLY DEPOSITED AS A ISOLATED SULFUR ATOM. AS PART OF REMEDIATION, THIS HAS BEEN CHANGED TO UNX (UNKNOWN ATOM OR LIGAND) AS THE HETEROGEN S IS NOW OBSOLETE IN THE PDB HETGROUP DICTIONARY.
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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: 2.4 Å3/Da / 溶媒含有率: 48.34 % / 解説: NONE
結晶化
pH: 6.5 詳細: COCRYSTALLISATION WITH 20MM OF KCLO4 (PERCHLORATE) IN 200MM OF DDNAPA (IE PROTEIN) WHICH HAD BEEN REDUCED BY DITHIONITE IN ANAEROBIC CONDITIONS AND THEN AIR REOXIDISED. THE SAMPLE WAS LEFT AT ...詳細: COCRYSTALLISATION WITH 20MM OF KCLO4 (PERCHLORATE) IN 200MM OF DDNAPA (IE PROTEIN) WHICH HAD BEEN REDUCED BY DITHIONITE IN ANAEROBIC CONDITIONS AND THEN AIR REOXIDISED. THE SAMPLE WAS LEFT AT ROOM TEMPERATURE FOR SEVERAL MONTHS BEFORE SETTING UP CRYSTALLISATIONS IN 0.1M MES, PH 6.5, 8% PEG 8000
解像度: 2.4→91.67 Å / Cor.coef. Fo:Fc: 0.965 / Cor.coef. Fo:Fc free: 0.931 / SU B: 15.234 / SU ML: 0.203 / TLS residual ADP flag: LIKELY RESIDUAL / 交差検証法: THROUGHOUT / ESU R: 0.39 / ESU R Free: 0.26 / 立体化学のターゲット値: MAXIMUM LIKELIHOOD 詳細: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. DISORDERED REGIONS WERE MODELED STEREOCHEMICA E.G. THE AMINO ACID SIDE CHAINS WHICH SHOW MOST FLEXIBILITY INCLUDING THE FOLLOWING LYSINES ...詳細: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. DISORDERED REGIONS WERE MODELED STEREOCHEMICA E.G. THE AMINO ACID SIDE CHAINS WHICH SHOW MOST FLEXIBILITY INCLUDING THE FOLLOWING LYSINES (7, 27, 75, 259, 380, 636, 722), ARGININES (4, 544, 652), GLUTAMATES (6, 257, 287, 386, 541, 608, 647, 648) AND GLUTAMINES (193, 510). SOME OF THESE HAVE BEEN ASSIGNED WITH ALTERNATE CONFORMATIONS.
Rfactor
反射数
%反射
Selection details
Rfree
0.24
1695
5.1 %
RANDOM
Rwork
0.165
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obs
0.168
31783
99.8 %
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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: 1.4 Å / 溶媒モデル: MASK