THE AMIDOTRANSFERASE MOLECULE IS A HOMOTETRAMER IN THE CRYSTALLINE STATE, BUT THE AGGREGATION STATE IN SOLUTION IS CONCENTRATION DEPENDENT. CRYSTALS CONTAIN 1 TETRAMER PER ASYMMETRIC UNIT AND COORDINATES FOR THE ENTIRE TETRAMER ARE INCLUDED IN THE ENTRY. THE SUBUNITS HAVE CHAIN IDENTIFIERS A, B, C, AND D. EACH "CHAIN" INCLUDES 455 AMINO ACID RESIDUES, ONE [4FE-4S] CLUSTER (RESIDUE 466), ONE GMP MOLECULE (RESIDUE 467), ONE ADP MOLECULE (RESIDUE 468), ONE MAGNESIUM ION (RESIDUE 469) AND ONE WATER MOLECULE LIGATED TO THE MAGNESIUM (CHAIN IDENTIFIER S). MOLECULAR P, Q AND R AXES RELATING SUBUNITS B, D, AND C, RESPECTIVELY, TO SUBUNIT A ARE SPECIFIED IN THE MTRIX RECORDS. THE FIRST MATRIX PRESENTED IN *MTRIX* RECORDS BELOW IS A MOLECULAR P AXIS MATRIX. THE SECOND IS A MOLECULAR R AXIS MATRIX, AND THE THIRD IS A MOLECULAR Q AXIS MATRIX.
PRO 86 IN ALL CHAINS IS A CIS-PROLINE. ASP 282 IN ALL CHAINS IS A CIS-ASPARTATE, PART OF A ...PRO 86 IN ALL CHAINS IS A CIS-PROLINE. ASP 282 IN ALL CHAINS IS A CIS-ASPARTATE, PART OF A PHOSPHATE BINDING SITE INVOLVED IN BINDING BOTH SUBSTRATE AND INHIBITORS.
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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: 2.58 Å3/Da / 溶媒含有率: 40 %
結晶化
pH: 7.9 詳細: 24% PEG8000, 200MM KCL, 50MM EPPS PH 7.9,2 MM ADP, 2 MM GMP, 10 MM MGCL2