IGF1_CAVPO
ID IGF1_CAVPO Reviewed; 130 AA.
AC P17647;
DT 01-AUG-1990, integrated into UniProtKB/Swiss-Prot.
DT 01-AUG-1990, sequence version 1.
DT 03-AUG-2022, entry version 128.
DE RecName: Full=Insulin-like growth factor I;
DE Short=IGF-I;
DE AltName: Full=Somatomedin;
DE Flags: Precursor;
GN Name=IGF1;
OS Cavia porcellus (Guinea pig).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Euarchontoglires; Glires; Rodentia; Hystricomorpha; Caviidae;
OC Cavia.
OX NCBI_TaxID=10141;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RC TISSUE=Pancreas;
RX PubMed=2377480; DOI=10.1093/nar/18.14.4275;
RA Bell G.I., Stempien M.M., Fong N.M., Scino S.;
RT "Sequence of a cDNA encoding guinea pig IGF-I.";
RL Nucleic Acids Res. 18:4275-4275(1990).
CC -!- FUNCTION: The insulin-like growth factors, isolated from plasma, are
CC structurally and functionally related to insulin but have a much higher
CC growth-promoting activity. May be a physiological regulator of [1-14C]-
CC 2-deoxy-D-glucose (2DG) transport and glycogen synthesis in
CC osteoblasts. Stimulates glucose transport in bone-derived osteoblastic
CC (PyMS) cells and is effective at much lower concentrations than
CC insulin, not only regarding glycogen and DNA synthesis but also with
CC regard to enhancing glucose uptake. May play a role in synapse
CC maturation. Ca(2+)-dependent exocytosis of IGF1 is required for sensory
CC perception of smell in the olfactory bulb. Acts as a ligand for IGF1R.
CC Binds to the alpha subunit of IGF1R, leading to the activation of the
CC intrinsic tyrosine kinase activity which autophosphorylates tyrosine
CC residues in the beta subunit thus initiatiating a cascade of down-
CC stream signaling events leading to activation of the PI3K-AKT/PKB and
CC the Ras-MAPK pathways. Binds to integrins ITGAV:ITGB3 and ITGA6:ITGB4.
CC Its binding to integrins and subsequent ternary complex formation with
CC integrins and IGFR1 are essential for IGF1 signaling. Induces the
CC phosphorylation and activation of IGFR1, MAPK3/ERK1, MAPK1/ERK2 and
CC AKT1 (By similarity). {ECO:0000250|UniProtKB:P05017,
CC ECO:0000250|UniProtKB:P05019}.
CC -!- SUBUNIT: Forms a ternary complex with IGFR1 and ITGAV:ITGB3. Forms a
CC ternary complex with IGFR1 and ITGA6:ITGB4.
CC {ECO:0000250|UniProtKB:P05019}.
CC -!- SUBCELLULAR LOCATION: Secreted {ECO:0000250|UniProtKB:P05017}.
CC -!- SIMILARITY: Belongs to the insulin family. {ECO:0000305}.
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DR EMBL; X52951; CAA37127.1; -; mRNA.
DR PIR; S12719; IGGP1.
DR RefSeq; NP_001166437.2; NM_001172966.1.
DR RefSeq; XP_013014489.1; XM_013159035.1.
DR RefSeq; XP_013014490.1; XM_013159036.1.
DR RefSeq; XP_013014491.1; XM_013159037.1.
DR RefSeq; XP_013014492.1; XM_013159038.1.
DR AlphaFoldDB; P17647; -.
DR BMRB; P17647; -.
DR SMR; P17647; -.
DR STRING; 10141.ENSCPOP00000020222; -.
DR GeneID; 100135551; -.
DR KEGG; cpoc:100135551; -.
DR CTD; 3479; -.
DR eggNOG; ENOG502RCAB; Eukaryota.
DR HOGENOM; CLU_123939_0_0_1; -.
DR InParanoid; P17647; -.
DR Proteomes; UP000005447; Unassembled WGS sequence.
DR GO; GO:0035867; C:alphav-beta3 integrin-IGF-1-IGF1R complex; ISS:UniProtKB.
DR GO; GO:0070382; C:exocytic vesicle; ISS:UniProtKB.
DR GO; GO:0005615; C:extracellular space; IEA:InterPro.
DR GO; GO:0008083; F:growth factor activity; IEA:UniProtKB-KW.
DR GO; GO:0005179; F:hormone activity; IEA:InterPro.
DR GO; GO:0005159; F:insulin-like growth factor receptor binding; ISS:UniProtKB.
DR GO; GO:0048009; P:insulin-like growth factor receptor signaling pathway; ISS:UniProtKB.
DR GO; GO:0043066; P:negative regulation of apoptotic process; ISS:UniProtKB.
DR GO; GO:0090201; P:negative regulation of release of cytochrome c from mitochondria; ISS:UniProtKB.
DR GO; GO:0008284; P:positive regulation of cell population proliferation; ISS:UniProtKB.
DR GO; GO:0046326; P:positive regulation of glucose import; ISS:UniProtKB.
DR GO; GO:0045725; P:positive regulation of glycogen biosynthetic process; ISS:UniProtKB.
DR InterPro; IPR022341; IGF-I.
DR InterPro; IPR016179; Insulin-like.
DR InterPro; IPR022350; Insulin-like_growth_factor.
DR InterPro; IPR036438; Insulin-like_sf.
DR InterPro; IPR022353; Insulin_CS.
DR InterPro; IPR022352; Insulin_family.
DR Pfam; PF00049; Insulin; 2.
DR PRINTS; PR02002; INSLNLIKEGF.
DR PRINTS; PR02005; INSLNLIKEGF1.
DR PRINTS; PR00276; INSULINFAMLY.
DR SMART; SM00078; IlGF; 1.
DR SUPFAM; SSF56994; SSF56994; 1.
DR PROSITE; PS00262; INSULIN; 1.
PE 2: Evidence at transcript level;
KW Disulfide bond; Growth factor; Reference proteome; Secreted; Signal.
FT SIGNAL 1..25
FT CHAIN 26..95
FT /note="Insulin-like growth factor I"
FT /id="PRO_0000015655"
FT PROPEP 96..130
FT /note="E peptide"
FT /id="PRO_0000015656"
FT REGION 26..54
FT /note="B"
FT REGION 55..66
FT /note="C"
FT REGION 67..87
FT /note="A"
FT REGION 88..95
FT /note="D"
FT REGION 97..130
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 98..115
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT DISULFID 31..73
FT /evidence="ECO:0000250"
FT DISULFID 43..86
FT /evidence="ECO:0000250"
FT DISULFID 72..77
FT /evidence="ECO:0000250"
SQ SEQUENCE 130 AA; 14342 MW; 251B20AEDC5729FF CRC64;
MHAVSSSHLF YLAFCLLVLT SSATAGPETL CGAELVDALQ FVCGDRGFYF NKPTGYGSSS
RRAPQTGIVD ECCFRSCDLR RLEMYCAPLK PAKSARSVRA QRHTDMPKTQ KEVHLKNASR
GSAGNKNYRM
