THE FE ATOMS OF THE [4FE-4S] CLUSTER ARE LIGATED BY CYSTEINE S(GAMMA) ATOMS AS FOLLOWS: FE 1 - SG ...THE FE ATOMS OF THE [4FE-4S] CLUSTER ARE LIGATED BY CYSTEINE S(GAMMA) ATOMS AS FOLLOWS: FE 1 - SG CYS 437; FE 2 - SG CYS 236; FE 3 - SG CYS 440; FE 4 - SG CYS 382. THE AMP MOLECULE THAT IS RESIDUE 467 IS BOUND TO THE SITE WHERE THE SUBSTRATE PRPP IS PRESUMED TO BIND. THE AMP MOLECULE THAT IS RESIDUE 468 IS BOUND BETWEEN SUBUNITS IN WHAT IS PRESUMED TO BE AN ALLOSTERIC REGULATORY SITE.
配列の詳細
THE STRUCTURE DIFFERS FROM THE DEPOSITED SEQUENCE IN TWO PLACES: 1) AN 11-RESIDUE PROPEPTIDE ...THE STRUCTURE DIFFERS FROM THE DEPOSITED SEQUENCE IN TWO PLACES: 1) AN 11-RESIDUE PROPEPTIDE REMOVED POSTTRANSLATIONALLY IS NOT PRESENT IN THE MATURE PROTEIN OR IN THE CRYSTALS, BUT IS INCLUDED IN THE SWISS-PROT ENTRY. RESIDUE NUMBERS IN THE PDB ENTRY ARE WITH RESPECT TO THE MATURE PROTEIN AND THOSE IN THE SWISS-PROT ENTRY ARE WITH RESPECT TO THE UNPROCESSED PROTEIN (I+11). SEQRES RECORDS IN THIS ENTRY CORRESPOND TO THE SEQUENCE OF MATURE PROTEIN. 2) RESIDUE 402 IS REPORTED FROM SEQUENCING TO BE GLYCINE BUT STRONG ELECTRON DENSITY AT THIS POSITION BRIDGES TO AN ARGININE SIDE CHAIN AND IS BEST FIT WITH A SIDE CHAIN OF THREE-ATOM LENGTH. AN ASPARTATE RESIDUE WAS MODELED INTO THIS DENSITY, REFINED, AND INCLUDED IN THE DEPOSITED MODEL. SEQUENCE ADVISORY NOTICE: DIFFERENCE BETWEEN SWISS-PROT AND PDB SEQUENCE. SWISS-PROT ENTRY NAME: PUR1_BACSU SWISS-PROT RESIDUE PDB SEQRES NAME NUMBER NAME CHAIN SEQ/INSERT CODE GLY 413 ASP 1 402 GLY 413 ASP 2 402 GLY 413 ASP 3 402 GLY 413 ASP 4 402
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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: 2.8 Å3/Da / 溶媒含有率: 56.04 %
結晶化
*PLUS
pH: 7.9 / 手法: batch method
溶液の組成
*PLUS
ID
濃度
一般名
Crystal-ID
Sol-ID
化学式
1
7-8 mg/ml
protein
1
1
2
50mM
Tris-HCl
1
1
3
3-4 mM
1
1
MgCl2
4
5mM
DTE
1
1
5
2mM
AMP
1
1
6
12-13 %(w/v)
PEG8000
1
1
7
10mM
1
2
MgCl2
8
5mM
DTE
1
2
9
2mM
AMP
1
2
10
15 %
PEG8000
1
2
11
50mM
Tris-HCl
1
2
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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: 3 Å / Num. obs: 41267 / % possible obs: 90.1 %