title: Urease catalysis and structure. IX. The half-unit and hemipolymers of jack bean urease.
mesh_terms: D002499:Centrifugation, Density Gradient; D055598:Chemical Phenomena; D002621:Chemistry; D004220:Disulfides; D004355:Drug Stability; D004591:Electrophoresis, Polyacrylamide Gel; D006018:Glycols; D007527:Isoenzymes / Q000378:metabolism*; D008956:Models, Chemical; D008970:Molecular Weight; D009994:Osmolar Concentration; D010944:Plants / Q000201:enzymology*; D013438:Sulfhydryl Compounds; D014461:Ultracentrifugation; D014510:Urease / Q000378:metabolism*
chemical_list: D004220:Disulfides; D006018:Glycols; D007527:Isoenzymes; D013438:Sulfhydryl Compounds; D014510:Urease