has_participant has participant cellular protein modification process protein phosphorylation biological_process protein amino acid phosphorylation The process of introducing a phosphate group on to a protein. GO:0006468 phosphate-containing compound metabolic process baculoviral IAP repeat-containing protein 5 (human) high affinity nerve growth factor receptor (human) tyrosine-protein kinase Lck (human) tyrosine-protein kinase Fyn (human) tyrosine-protein kinase Lyn (human) tyrosine-protein kinase Fgr (human) breakpoint cluster region protein (human) cyclin-dependent kinase 4 (human) tyrosine-protein kinase CSK (human) serine/threonine-protein kinase mTOR (human) tyrosine-protein kinase FRK (human) mitogen-activated protein kinase 8 (human) cyclin-dependent kinase 6 (human) tyrosine-protein kinase BTK (human) mitogen-activated protein kinase kinase kinase 20 (human)