Resolution: 2.3→20 Å / Cor.coef. Fo:Fc: 0.948 / Cor.coef. Fo:Fc free: 0.934 / SU B: 5.343 / SU ML: 0.125 / Cross valid method: FREE R-VALUE / ESU R: 0.227 / ESU R Free: 0.187 Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. Metal ions were assigned as zinc based on amino acid residue types at the binding site and following precedence of PDB entries 4EGU, 3OJ7, ...Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. Metal ions were assigned as zinc based on amino acid residue types at the binding site and following precedence of PDB entries 4EGU, 3OJ7, 3OMF. CAUTION: The ligand bound near Asp30 of chain B was tentatively identified as adenosine based on the shape of difference electron density and the presence of similar ligands in PDB entries 4EGU, 3OMF. Ultimate identity and origin of the ligand remain unknown. There is similar but weaker electron density near an equivalent site in chain A. Restraints for adenosine geometry were prepared on the GRADE server (GLOBALPHASING). We note the dubious fit of the Leu1 side chain to electron density and suspect a misassignment or mutation of this residue.
Rfactor
Num. reflection
% reflection
Selection details
Rfree
0.23292
495
3.1 %
FLAGS TAKEN FROM PDB ENTRY 1XQU
Rwork
0.20597
-
-
-
obs
0.20678
15683
97.17 %
-
Solvent computation
Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å