GO:0009986; C:cell surface; IEA:Compara.
GO:0016020; C:membrane; IEA:InterPro.
GO:0017002; F:activin-activated receptor activity; IEA:InterPro.
GO:0005524; F:ATP binding; IEA:InterPro.
GO:0004702; F:receptor signaling protein serine/threonine kinase activity; IEA:InterPro.
GO:0009952; P:anterior/posterior pattern specification; IEA:Compara.
GO:0030509; P:BMP signaling pathway; IEA:Compara.
GO:0007368; P:determination of left/right symmetry; IEA:Compara.
GO:0048706; P:embryonic skeletal system development; IEA:Compara.
GO:0001702; P:gastrulation with mouth forming second; IEA:Compara.
GO:0007498; P:mesoderm development; IEA:Compara.
GO:0043084; P:penile erection; IEA:Compara.
GO:0030510; P:regulation of BMP signaling pathway; IEA:Compara.
GO:0050999; P:regulation of nitric-oxide synthase activity; IEA:Compara.
GO:0060011; P:Sertoli cell proliferation; IEA:Compara.
GO:0023014; P:signal transduction by phosphorylation; IEA:GOC.
GO:0042713; P:sperm ejaculation; IEA:Compara.
GO:0007283; P:spermatogenesis; IEA:Compara.