title: An in vivo requirement for calcium in Photosystem II of Anacystis nidulans.
mesh_terms: D002118:Calcium / Q000494:pharmacology*; D000458:Cyanobacteria / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*; D006033:Glycylglycine / Q000494:pharmacology; D007700:Kinetics; D010788:Photosynthesis / Q000187:drug effects*
chemical_list: D006033:Glycylglycine; D002118:Calcium