K04670  ACVR2A; activin receptor type-2A [EC:2.7.11.30]
     K13596  ACVR2B; activin receptor type-2B [EC:2.7.11.30]
     K13597  ACVR2N; activin receptor type-2, invertebrate
     K04388  TGFBR2; TGF-beta receptor type-2 [EC:2.7.11.30]
     K04671  BMPR2; bone morphogenetic protein receptor type-2 [EC:2.7.11.30]
     K04672  AMHR2; anti-mullerian hormone receptor type-2 [EC:2.7.11.30]