3.5.1.B15 analysis of enzyme crystal structure, PDB ID 3PL1 3.5.1.B15 crystal structure (PDB ID 2WT9) analysis, and modeling of substrate binding and unbinding, overview 3.5.1.B15 determination and analysis of the crystal structure of substrate-free PncA from Bacillus subtilis (BsPncA) at 2.0 A resolution 3.5.1.B15 three-dimensional structure of pyrazinamidase at 2.05 A resolution and the structure of its complex with Zn2+ at 1.65 A resolution