FSHB_PHOSU
ID FSHB_PHOSU Reviewed; 126 AA.
AC Q9QYB0;
DT 01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT 01-MAY-2000, sequence version 1.
DT 25-MAY-2022, entry version 68.
DE RecName: Full=Follitropin subunit beta;
DE AltName: Full=Follicle-stimulating hormone beta subunit;
DE Short=FSH-B;
DE Short=FSH-beta;
DE AltName: Full=Follitropin beta chain;
DE Flags: Precursor; Fragment;
GN Name=FSHB;
OS Phodopus sungorus (Striped hairy-footed hamster) (Djungarian hamster).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea;
OC Cricetidae; Cricetinae; Phodopus.
OX NCBI_TaxID=10044;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RC TISSUE=Pituitary;
RX PubMed=10611080; DOI=10.1095/biolreprod62.1.155;
RA Bernard D.J., Merzlyak I.Y., Horton T.H., Turek F.W.;
RT "Differential regulation of pituitary gonadotropin subunit messenger
RT ribonucleic acid levels in photostimulated Siberian hamsters.";
RL Biol. Reprod. 62:155-161(2000).
CC -!- FUNCTION: Together with the alpha chain CGA constitutes follitropin,
CC the follicle-stimulating hormone, and provides its biological
CC specificity to the hormone heterodimer. Binds FSHR, a G protein-coupled
CC receptor, on target cells to activate downstream signaling pathways.
CC Follitropin is involved in follicle development and spermatogenesis in
CC reproductive organs. {ECO:0000250|UniProtKB:P01225}.
CC -!- SUBUNIT: Heterodimer. The active follitropin is a heterodimer composed
CC of an alpha chain/CGA shared with other hormones and a unique beta
CC chain/FSHB shown here. {ECO:0000250|UniProtKB:P01225}.
CC -!- SUBCELLULAR LOCATION: Secreted {ECO:0000250|UniProtKB:P01225}.
CC Note=Efficient secretion requires dimerization with CGA.
CC {ECO:0000250|UniProtKB:P01225}.
CC -!- SIMILARITY: Belongs to the glycoprotein hormones subunit beta family.
CC {ECO:0000305}.
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DR EMBL; AF106914; AAF15965.1; -; mRNA.
DR AlphaFoldDB; Q9QYB0; -.
DR SMR; Q9QYB0; -.
DR GO; GO:0005615; C:extracellular space; ISS:UniProtKB.
DR GO; GO:0016914; C:follicle-stimulating hormone complex; ISS:UniProtKB.
DR GO; GO:0016913; F:follicle-stimulating hormone activity; ISS:UniProtKB.
DR GO; GO:0007186; P:G protein-coupled receptor signaling pathway; ISS:UniProtKB.
DR GO; GO:0010469; P:regulation of signaling receptor activity; ISS:UniProtKB.
DR CDD; cd00069; GHB_like; 1.
DR Gene3D; 2.10.90.10; -; 1.
DR InterPro; IPR029034; Cystine-knot_cytokine.
DR InterPro; IPR006208; Glyco_hormone_CN.
DR InterPro; IPR001545; Gonadotropin_bsu.
DR InterPro; IPR018245; Gonadotropin_bsu_CS.
DR PANTHER; PTHR11515; PTHR11515; 1.
DR Pfam; PF00007; Cys_knot; 1.
DR SMART; SM00068; GHB; 1.
DR SUPFAM; SSF57501; SSF57501; 1.
DR PROSITE; PS00261; GLYCO_HORMONE_BETA_1; 1.
DR PROSITE; PS00689; GLYCO_HORMONE_BETA_2; 1.
PE 2: Evidence at transcript level;
KW Disulfide bond; Glycoprotein; Hormone; Secreted; Signal.
FT SIGNAL <1..19
FT /evidence="ECO:0000250"
FT CHAIN 20..>126
FT /note="Follitropin subunit beta"
FT /id="PRO_0000011714"
FT CARBOHYD 25
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000250|UniProtKB:P01225"
FT CARBOHYD 42
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000250|UniProtKB:P01225"
FT DISULFID 21..69
FT /evidence="ECO:0000250|UniProtKB:P01225"
FT DISULFID 35..84
FT /evidence="ECO:0000250|UniProtKB:P01225"
FT DISULFID 38..122
FT /evidence="ECO:0000250|UniProtKB:P01225"
FT DISULFID 46..100
FT /evidence="ECO:0000250|UniProtKB:P01225"
FT DISULFID 50..102
FT /evidence="ECO:0000250|UniProtKB:P01225"
FT DISULFID 105..112
FT /evidence="ECO:0000250|UniProtKB:P01225"
FT NON_TER 1
FT NON_TER 126
SQ SEQUENCE 126 AA; 14358 MW; 0E8ED1042B28A27C CRC64;
MKLIQLCILF WCWRAICCQG CELTNITIAV EKEECRFCIS INTTWCAGYC YTRDLVYKDP
ARPNTQKICT FKELVYETIR LPGCAHHSDS FYTYPVATEC HCGKCDSDST DCTVRGLGPS
YCSFGE
