activation of gene transcription activation of gene transcription by phosphorylated protein YH, AO phosphorylated // activator // transcription, phosphorylated // activates // transcription, phosphorylated // activate // transcription, phosphorylated // activated // transcription "Spo0A, which when phosphorylated is an activator of sigE transcription." (Reference: http://www.ncbi.nlm.nih.gov/pubmed/10383978) an activation of gene transcription that is achieved by a phosphorylated protein