[Term] id: PR:000027753 name: estrogen receptor isoform 1 phosphorylated 3 def: "An estrogen receptor isoform 1 that has been phosphorylated on a Ser residue in the N-terminal activation function 1 (AF1) domain (Pfam:PF02159). This phosphorylation site is involved in modulating the expression of genes downregulated by 17-beta-estradiol and 4-Hydroxytamoxifen. Example: UniProtKB:P03372-1, Ser-118, MOD:00046." [PRO:PD, PMID:17615152, Pfam:PF02159] comment: Category=modification. synonym: "ESR1/iso:1/Phos:3" EXACT PRO-short-label [PRO:DNx] is_a: PR:000027721 ! estrogen receptor isoform 1 relationship: has_part MOD:00046 ! O-phospho-L-serine