obsolete regulation of prostaglandin-endoperoxide synthase activity https://github.com/geneontology/go-ontology/issues/22455 true regulation of fatty acid cyclooxygenase activity OBSOLETE. Any process that modulates the rate, frequency or prostaglandin-endoperoxide synthase activity. Prostaglandin-endoperoxide synthase activity is the catalysis of the reaction: arachidonate + donor-H2 + 2 O2 = prostaglandin H2 + acceptor + H2O. This term was obsoleted because it represents a molecular function. 2009-05-08T02:08:37Z regulation of PG synthetase activity dph biological_process GO:0060584 regulation of (PG)H synthase activity regulation of prostaglandin synthetase activity