Term Name:	RNA polymerase II CTD heptapeptide repeat Y1 kinase activity
Synonyms:	RNA polymerase II C-terminal domain Y1 kinase activity
Definition:	Catalysis of the reaction: ATP + RNA polymerase II large subunit CTD heptapeptide repeat (consensus YSPTSPS) = ADP + H+ + RNA polymerase II large subunit phosphotyrosine (position 1).
Ontology:	GO: Molecular Function [GO:0140833]    QuickGO    AmiGO