[Term] id: PR:000046257 name: activin receptor type-1B, signal peptide removed phosphorylated 3 (human) def: "An activin receptor type-1B (human) that has had the signal peptide removed and has been post-translationally modified to include phosphoserine at positions 187, 189, 191 and 193, and phosphothreonine at positions 188 and 206 of the amino acid sequence represented by UniProtKB:P36896. UniProtKB:P36896, 24-505, Ser-187/Ser-189/Ser-191/Ser-193, MOD:00046|Thr-188/Thr-206, MOD:00047." [PRO:DNx, Reactome:R-HSA-205780] comment: Category=organism-modification. synonym: "hACVR1B/SigPep-/Phos:3" EXACT PRO-short-label [PRO:DNx] synonym: "PRO_0000024417, Ser-187/Ser-189/Ser-191/Ser-193, MOD:00046|Thr-188/Thr-206, MOD:00047" EXACT PRO-proteoform-ftid [PRO:DNx] synonym: "UniProtKB:P36896, 24-505, Ser-187/Ser-189/Ser-191/Ser-193, MOD:00046|Thr-188/Thr-206, MOD:00047" EXACT PRO-proteoform-std [PRO:DNx] xref: Reactome:R-HSA-205780 "PR:000046257 located_in GO:0005886" is_a: PR:P36896 ! activin receptor type-1B (human) relationship: has_part MOD:00046 ! O-phospho-L-serine relationship: has_part MOD:00047 ! O-phospho-L-threonine relationship: lacks_part SO:0000418 ! signal_peptide relationship: only_in_taxon NCBITaxon:9606 ! Homo sapiens