Follicle-stimulating hormone beta subunit Follitropin beta chain Stimulates development of follicle and spermatogenesis in the reproductive organs. FSHB Follitropin subunit beta 129 FSHB_PIG MKSLQFCFLFCCWKAICCNSCELTNITITVEKEECNFCISINTTWCAGYCYTRDLVYKDPARPNIQKTCTFKELVYETVKVPGCAHHADSLYTYPVATECHCGKCDSDSTDCTVRGLGPSYCSFSEMKE