Insulin-Like Growth Factor I

Gene Synonyms:

Protein Names:

Organism:

Homo sapiens (Human)

Mass (kDa):

21841

Length (aa):

195

Sequence:

MGKISSLPTQLFKCCFCDFLKVKMHTMSSSHLFYLALCLLTFTSSATAGPETLCGAELVDALQFVCGDRGFYFNKPTGYGSSSRRAPQTGIVDECCFRSCDLRRLEMYCAPLKPAKSARSVRAQRHTDMPKTQKYQPPSTNKNTKSQRRKGWPKTHPGGEQKEGTEASLQIRGKKKEQRREIGSRNAECRGKKGK

Proteomics (Proteome ID):

Insulin-like growth factor I (IGF-I) (Mechano growth factor) (MGF) (Somatomedin-C)

Proteomics (Chromosome):

UP000005640

Mass Spectrometry:

N/A

Function [CC]:

The insulin-like growth factors, isolated from plasma, are structurally and functionally related to insulin but have a much higher growth-promoting activity. May be a physiological regulator of [1-14C]-2-deoxy-D-glucose (2DG) transport and glycogen synthesis in osteoblasts. Stimulates glucose transport in bone-derived osteoblastic (PyMS) cells and is effective at much lower concentrations than insulin, not only regarding glycogen and DNA synthesis but also with regard to enhancing glucose uptake. May play a role in synapse maturation (PubMed:21076856, PubMed:24132240). Ca(2+)-dependent exocytosis of IGF1 is required for sensory perception of smell in the olfactory bulb (By similarity). Acts as a ligand for IGF1R. Binds to the alpha subunit of IGF1R, leading to the activation of the intrinsic tyrosine kinase activity which autophosphorylates tyrosine residues in the beta subunit thus initiatiating a cascade of down-stream signaling events leading to activation of the PI3K-AKT/PKB and the Ras-MAPK pathways. Binds to integrins ITGAV:ITGB3 and ITGA6:ITGB4. Its binding to integrins and subsequent ternary complex formation with integrins and IGFR1 are essential for IGF1 signaling. Induces the phosphorylation and activation of IGFR1, MAPK3/ERK1, MAPK1/ERK2 and AKT1 (PubMed:19578119, PubMed:22351760, PubMed:23696648, PubMed:23243309). {ECO:0000250|UniProtKB:P05017, ECO:0000269|PubMed:19578119, ECO:0000269|PubMed:21076856, ECO:0000269|PubMed:22351760, ECO:0000269|PubMed:23243309, ECO:0000269|PubMed:23696648, ECO:0000269|PubMed:24132240}.

Metal Binding:

N/A

Site:

N/A

Tissue Specificity:

N/A

Disease:

Insulin-like growth factor I deficiency (IGF1 deficiency) [MIM:608747]: Autosomal recessive disorder characterized by growth retardation, sensorineural deafness and mental retardation. {ECO:0000269|PubMed:8857020}. Note=The disease is caused by mutations affecting the gene represented in this entry.

Mutagenesis:

MUTAGEN 84 84 R->E: Dominant-negative mutant, no effect on IGFR1-binding, defective in integrin-binding and the formation of ternary complex with integrins and IGFR1, defective in inducing IGF1 signaling and cell proliferation, and suppresses activation of IGF1R by insulin and tumorigenesis in vivo; when associated with E-85. {ECO:0000269|PubMed:19578119, ECO:0000269|PubMed:22351760, ECO:0000269|PubMed:23243309, ECO:0000269|PubMed:23696648}.; MUTAGEN 85 85 R->E: Dominant-negative mutant, no effect on IGFR1-binding, defective in integrin-binding and the formation of ternary complex with integrins and IGFR1, defective in inducing IGF1 signaling and cell proliferation, and suppresses activation of IGF1R by insulin and tumorigenesis in vivo; when associated with E-84. {ECO:0000269|PubMed:19578119, ECO:0000269|PubMed:22351760, ECO:0000269|PubMed:23243309, ECO:0000269|PubMed:23696648}.

Name:

Insulin-like growth factor I (IGF-I) (Mechano growth factor) (MGF) (Somatomedin-C)

Class:

Subcategory:

Recombinant

Source:

Species:

Human

Amino Acid Sequence:

Tag:

Format:

Lyophilized

Formulation:

Sterile-filtered colorless solution

Formulation Concentration:

1mg/ml

Buffer Volume:

Standard

Buffer Solution:

PBS

pH:

7.4-7.5

NaCl:

Null

EDTA:

Null

Purity:

> 98%

Determined:

SDS-PAGE

Stained:

Inquire

Validated:

RP-HPLC

Storage:

4°C

Stability:

This bioreagent is stable at 4°C (short-term) and -70°C(long-term). After reconstitution, sample may be stored at 4°C for 2-7 days and below -18°C for future use.

Preparation:

Reconstitute in sterile distilled H2O to no less than 100ug/ml; dilute reconstituted stock further in other aqueous solutions if needed. Please review COA for lot-specific instructions. Final measurements should be determined by the end-user for optimal performance.