regulates (processual) regulates phosphorylation regulation of phosphorylation https://github.com/geneontology/go-ontology/issues/27189 GO:0042325 Note that this term is in the subset of terms that should not be used for direct gene product annotation. Instead, select a child term or, if no appropriate child term exists, please request a new term. Direct annotations to this term may be amended during annotation QC. Any process that modulates the frequency, rate or extent of addition of phosphate groups into a molecule. regulation of phosphorus metabolic process biological regulation