[Term] id: PR:000018684 name: MHC class II histocompatibility antigen beta chain DRB1, signal peptide removed form def: "An MHC class II histocompatibility antigen beta chain DRB1 that has had the signal peptide removed." [PRO:DNx] comment: Category=modification. synonym: "MHCcIIbeta_DRB1/SigPep-" EXACT PRO-short-label [PRO:DAN] synonym: "HLA-DRB1/SigPep-" RELATED [PRO:DNx] intersection_of: PR:000002019 ! MHC class II histocompatibility antigen beta chain DRB1 intersection_of: lacks_part SO:0000418 ! signal_peptide