[Term] id: PR:000044881 name: histone H1.5, initiator methionine removed phosphorylated 3 (human) def: "A histone H1.5 (human) that has had the initiator methionine removed and that has been phosphorylated on the residue at the position equivalent to Ser-189 of the amino acid sequence represented by UniProtKB:P16401. UniProtKB:P16401, 2-226, Ser-189, MOD:00046." [PRO:DAN, PRO:JPB, PRO:JR, PMID:16377619, HIstome_var_Hs:Histone_H1.5] comment: Category=organism-modification. synonym: "hHIST1H1B/InitMet-/Phos:3" EXACT PRO-short-label [PRO:DNx] synonym: "UniProtKB:P16401, 2-226, Ser-189, MOD:00046" EXACT PRO-proteoform-std [PRO:DNx] synonym: "H1.5:H1S188ph" BROAD [HIstome_ptm_Hs:H1S188ph] is_a: PR:P16401 ! histone H1.5 (human) relationship: has_part MOD:00046 ! O-phospho-L-serine relationship: lacks_part PR:000021937 ! initiator methionine relationship: only_in_taxon NCBITaxon:9606 ! Homo sapiens