MTRIX THE TRANSFORMATIONS PRESENTED ON MTRIX RECORDS BELOW DESCRIBE NON-CRYSTALLOGRAPHIC RELATIONSHIPS AMONG THE VARIOUS DOMAINS IN THIS ENTRY. APPLYING THE APPROPRIATE MTRIX TRANSFORMATION TO THE RESIDUES LISTED FIRST WILL YIELD APPROXIMATE COORDINATES FOR THE RESIDUES LISTED SECOND. APPLIED TO TRANSFORMED TO MTRIX RESIDUES RESIDUES RMSD M1 A 1 .. A 151 B 1 .. B 151 0.295
マシュー密度: 2.9 Å3/Da / 溶媒含有率: 57.56 % 解説: THIS IS THE FINAL MODEL OBTAINED AFTER COMBINING TWO COMPLETE DATA SETS, COLLECTED FROM TWO DIFFERENT CRYSTALS. TWO OTHER MODELS OBTAINED BY REFINING AGAINST THE INDIVIDUAL DATA SETS WERE ...解説: THIS IS THE FINAL MODEL OBTAINED AFTER COMBINING TWO COMPLETE DATA SETS, COLLECTED FROM TWO DIFFERENT CRYSTALS. TWO OTHER MODELS OBTAINED BY REFINING AGAINST THE INDIVIDUAL DATA SETS WERE USED TO ESTIMATE ATOMIC COORDINATE ERRORS FOR THIS FINAL MODEL. THIS MODEL AND THE CORRESPONDING STRUCTURE FACTORS ARE OF UNUSUALLY HIGH QUALITY FOR THIS RESOLUTION (1.9 ANGSTROMS), WITH 97% COMPLETENESS, 9.1 FOLD REDUNDANCY (TWO DATA SETS COMBINED) AND HIGH QUALITY X-RAY SOURCE (SYNCHROTRON). THE COORDINATE ERROR IN THE FINAL MODEL, ESTIMATED FROM COMPARING THE TWO INDEPENDENTLY REFINED MODELS WAS 0.08 ANGSTROMS FOR PROTEIN ATOMS, 0.07 ANGSTROMS FOR MAIN CHAIN, 0.09 ANGSTROMS FOR SIDE CHAINS. THE OTHER TWO MODELS AND THE CORRESPONDING DATA SETS HAVE BEEN DEPOSITED SEPARATELY.
解像度: 1.9→10 Å / σ(F): 0 詳細: GLU 119 (BOTH SUBUNITS) APPEARS ON THE ELECTRON DENSITY TO BE COVALENTLY MODIFIED. THE NATURE OF THE MODIFICATION IS UNKNOWN AND IT HAS NOT BEEN MODELLED. THE APPEARANCE OF THE ELECTRON ...詳細: GLU 119 (BOTH SUBUNITS) APPEARS ON THE ELECTRON DENSITY TO BE COVALENTLY MODIFIED. THE NATURE OF THE MODIFICATION IS UNKNOWN AND IT HAS NOT BEEN MODELLED. THE APPEARANCE OF THE ELECTRON DENSITY IS CONSISTENT WITH OE1 REPLACED BY A HYDROXYLAMINE GROUP. THE MODIFICATION IS ALSO OBSERVED IN THE STRUCTURE OF NATIVE, OXIDIZED SOD. THEREFORE, IT CANNOT BE AN ARTIFACT OF THE TREATMENT WITH DITHIONITE, USED IN REDUCING THE ENZYME. THE POSITION OF THE MODIFICATION RELATIVE TO THE ACTIVE SITE SUGGESTS A ROLE IN THE REACTION MECHANISM. SEE THE PAPER CITED ON JRNL RECORDS ABOVE FOR DETAILS. RESIDUES WITH POOR ELECTRON DENSITY: LYS A 3, LYS A 9, LYS A 23, LYS A 68, LYS A 73, LYS A 89, GLU A 107, LYS A 120, LYS A 134, LYS A 151, LYS B 23, ASN B 51, GLN B 53, LYS B 73, LYS B 89, LYS B 134, LYS B 151. A NUMBER OF CLOSE CONTACTS OCCURS BETWEEN SOLVENT MOLECULES. INSPECTION OF THE ELECTRON DENSITY CONFIRMS THAT THESE SITES ARE REAL BUT PROBABLY CORRESPOND TO PARTIALLY OCCUPIED, ALTERNATIVE SOLVENT SITES. A FEW VERY CLOSE CONTACTS OCCUR BETWEEN ATOMS WITH ZERO OCCUPANCY AND SOLVENT MOLECULES.