- PDB-1enc: CRYSTAL STRUCTURES OF THE BINARY CA2+ AND PDTP COMPLEXES AND THE ... -
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基本情報
登録情報
データベース: PDB / ID: 1enc
タイトル
CRYSTAL STRUCTURES OF THE BINARY CA2+ AND PDTP COMPLEXES AND THE TERNARY COMPLEX OF THE ASP 21->GLU MUTANT OF STAPHYLOCOCCAL NUCLEASE. IMPLICATIONS FOR CATALYSIS AND LIGAND BINDING
要素
STAPHYLOCOCCAL NUCLEASE
キーワード
HYDROLASE(PHOSPHORIC DIESTER)
機能・相同性
機能・相同性情報
micrococcal nuclease / : / nucleic acid binding / extracellular region / metal ion binding / membrane 類似検索 - 分子機能
OB fold (Dihydrolipoamide Acetyltransferase, E2P) - #90 / Thermonuclease family signature 1. / Thermonuclease active site / Thermonuclease family signature 2. / Staphylococcal nuclease (SNase-like), OB-fold / Staphylococcal nuclease homologue / Thermonuclease domain profile. / Staphylococcal nuclease homologues / SNase-like, OB-fold superfamily / OB fold (Dihydrolipoamide Acetyltransferase, E2P) ...OB fold (Dihydrolipoamide Acetyltransferase, E2P) - #90 / Thermonuclease family signature 1. / Thermonuclease active site / Thermonuclease family signature 2. / Staphylococcal nuclease (SNase-like), OB-fold / Staphylococcal nuclease homologue / Thermonuclease domain profile. / Staphylococcal nuclease homologues / SNase-like, OB-fold superfamily / OB fold (Dihydrolipoamide Acetyltransferase, E2P) / Beta Barrel / Mainly Beta 類似検索 - ドメイン・相同性
ジャーナル: Biochemistry / 年: 1994 タイトル: Crystal structures of the binary Ca2+ and pdTp complexes and the ternary complex of the Asp21-->Glu mutant of staphylococcal nuclease. Implications for catalysis and ligand binding. 著者: Libson, A.M. / Gittis, A.G. / Lattman, E.E.
ASP 21 IS LIGAND OF ACTIVE SITE CA2+ IN THE WILD TYPE STRUCTURE. THE D21E MUTANT STILL BINDS CA2+, ...ASP 21 IS LIGAND OF ACTIVE SITE CA2+ IN THE WILD TYPE STRUCTURE. THE D21E MUTANT STILL BINDS CA2+, BUT MOVES THE METAL ION 1.5 ANGSTROMS OUT OF THE ACTIVE SITE POCKET. THIS MOVEMENT CAUSES GLU 43 TO BECOME AN INNER SPHERE LIGAND OF CA2+ AND PERTURBS THE NORMAL WATER COORDINATION FOUND ABOUT CA2+ IN THE WILD TYPE STRUCTURE.
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実験情報
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実験
実験
手法: X線回折
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試料調製
結晶
マシュー密度: 2.16 Å3/Da / 溶媒含有率: 42.96 %
結晶化
*PLUS
温度: 4 ℃ / 手法: 蒸気拡散法
溶液の組成
*PLUS
ID
濃度
一般名
Crystal-ID
Sol-ID
化学式
1
18mg/ml
D21Eproteinsolution
1
drop
2
50mM
TES
1
reservoir
3
10mM
1
reservoir
Ca2+
4
10mM
pdTp
1
reservoir
5
50-52 %(v/v)
MPD
1
reservoir
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データ収集
放射
散乱光タイプ: x-ray
放射波長
相対比: 1
反射
*PLUS
最高解像度: 1.89 Å / 最低解像度: 9999 Å / Num. obs: 9811 / % possible obs: 85 % / Num. measured all: 44141 / Rmerge(I) obs: 0.046