[Term] id: PR:000048503 name: myosin regulatory light chain 2, atrial isoform phosphorylated 1 (human) def: "A myosin regulatory light chain 2, atrial isoform (human) that has been phosphorylated on the residue at the position equivalent to Ser-23 of the amino acid sequence represented by UniProtKB:Q01449. UniProtKB:Q01449, Ser-23, MOD:00046." [PRO:DNx, Reactome:R-HSA-390732] comment: Category=organism-modification. synonym: "hMYL7/Phos:1" EXACT PRO-short-label [PRO:DNx] synonym: "UniProtKB:Q01449, Ser-23, MOD:00046" EXACT PRO-proteoform-std [PRO:DNx] xref: Reactome:R-HSA-390732 "PR:000048503 located_in GO:0005829" is_a: PR:Q01449 ! myosin regulatory light chain 2, atrial isoform (human) relationship: has_part MOD:00046 ! O-phospho-L-serine relationship: only_in_taxon NCBITaxon:9606 ! Homo sapiens