[Term] id: PR:000046519 name: tyrosine-protein kinase BTK, initiator methionine removed phosphorylated 1 (human) def: "A tyrosine-protein kinase BTK, initiator methionine removed form (human) that has been phosphorylated on the residue at the position equivalent to Tyr-551 of the amino acid sequence represented by UniProtKB:Q06187. UniProtKB:Q06187, 2-659, Tyr-551, MOD:00048." [PRO:DNx, Reactome:R-HSA-2685603] comment: Category=organism-modification. synonym: "hBTK/InitMet-/Phos:1" EXACT PRO-short-label [PRO:DNx] synonym: "PRO_0000088065, Tyr-551, MOD:00048" EXACT PRO-proteoform-ftid [PRO:DNx] synonym: "UniProtKB:Q06187, 2-659, Tyr-551, MOD:00048" EXACT PRO-proteoform-std [PRO:DNx] xref: Reactome:R-HSA-2685603 "PR:000046519 located_in GO:0005829" xref: Reactome:R-HSA-9606165 "PR:000046519 located_in GO:0005886" is_a: PR:000044351 ! tyrosine-protein kinase BTK, initiator methionine removed form (human) relationship: has_part MOD:00048 ! O4'-phospho-L-tyrosine relationship: only_in_taxon NCBITaxon:9606 ! Homo sapiens