title: Protocatechuate 3,4-dioxygenase. I. Crystallization and characterization.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D001565:Benzoates / Q000494:pharmacology; D002396:Catechols; D003460:Crystallization; D004586:Electrophoresis; D004790:Enzyme Induction; D006863:Hydrogen-Ion Concentration; D007122:Immunoelectrophoresis; D007501:Iron / Q000032:analysis; D008970:Molecular Weight; D010105:Oxygenases / Q000032:analysis*; D011550:Pseudomonas aeruginosa / Q000187:drug effects / Q000201:enzymology*; D013057:Spectrum Analysis; D014461:Ultracentrifugation
chemical_list: D000596:Amino Acids; D001565:Benzoates; D002396:Catechols; D007501:Iron; D010105:Oxygenases