Alignment of glycoprotein/bursicon hormone-type precursors. Accession numbers for the corresponding precursor proteins are: Arub_GPA2_1, A. rubens glycoprotein hormone α-2 (GPA2)-type precursor 1 [GenBank: KT601721]; Arub_GPA2_2, A. rubens GPA2-type precursor 2 [GenBank: KT601722]; Arub_GPB5_1, A. rubens glycoprotein hormone β-5 (GPB5)-type precursor 1 [GenBank: KT601723], Arub_GPB5_2, A. rubens GPB5-type precursor 2 [GenBank: KT601724]; Arub_GPB5_3, A. rubens GPB5-type precursor 3 [GenBank: KT601725]; Arub_BursA, A. rubens bursicon-α-type precursor [GenBank: KT601726]; Arub_BursB, A. rubens bursicon-β-type precursor [GenBank: KT601727]; Hsap_GPA2, H. sapiens GPA2 precursor [GI:189491650]; Hsap_GPB5, H. sapiens GPB5 precursor [GI:21427593]; Hsap_FSHB, H. sapiens follicle-stimulating hormone (FSH) β-precursor [GI:124014246]; Hsap_CGB7, H. sapiens chorionic gonadotropin (CG) β-polypeptide 7 precursor [GI:15451749]; Hsap_LSHB, H. sapiens luteinizing hormone (LH) β-polypeptide precursor [GI:15431286]; Hsap_TSHB, H. sapiens the putative IGF-type receptor (TSH) β-precursor [GI:47479817]; Dmel_GPA2, D. melanogaster GPA2 precursor [GI:320546230]; Dmel_TSHB, D. melanogaster glycoprotein hormone β-subunit-related protein precursor [GI:21427595]; Dmel_BursA, D. melanogaster bursicon-α precursor [GI:665394724]; Dmel_BursB, D. melanogaster bursicon-β precursor [GI:62392020].