Technical Data
I7661-10L
Insulin-Like Growth Factor I, Recombinant, Mouse (Insulin-like Growth Factor 1, Igf1, Igf-1, IGF-I, C730016P09Rik, Somatomedin)
50ug
Growth Factors, Cytokines Storage: -20CShipping: Blue Ice
Source:
Recombinant corresponding to 70aa of human Insulin Like Growth Factor-1 expressed in E.coli is a single, non-glycosylated, polypeptide chain.

Molecular Weight:
~7.6kD

Biological Activity:
The ED50, calculated by the dose-dependent proliferation of mouse BALBC 3T3 cells (measured by 3H-thymidine uptake) is less then 1.0ng/ml, corresponding to a specific activity of 1x10U/mg.

Dimers and Aggregates:
1% (SDS-PAGE)

Protein Content:
Protein quantitation was carried out by two independent methods: 1. UV spectroscopy at 280nm using the absorbency value of 0.47 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences(IntelliGenetics). 2. Analysis by RP-HPLC, using a standard solution of IGF-I as a Reference Standard.

Storage and Stability:
Lyophilized powder may be stored at -20C. Stable for 12 months at -20C. Reconstitute with sterile ddH2O, HSA or BSA. Aliquot to avoid repeated freezing and thawing. Store at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

Molecular Weight:
~7.6kD
Purity: ~98% (RP-HPLC, Anion-exchange FPLC, SDS-PAGE) Endotoxin: 0.1ng/ug (IEU/ug)
Concentration: Not determined
Form: Supplied as a lyophilized powder. No preservative added. Reconstitute with sterile dH2O, 0.1% HSA or BSA to 0.1mg/ml.

Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.
1. Organ-specific and age-dependent expression of insulin-like growth factor-I (IGF-I) mRNA variants: IGF-IA and IB mRNAs in the mouse. Zoolog Sci 2005 Sep;22(9):1011-21. 2. The impairment of IGF-I-stimulated protein synthesis and activation of protein kinase B, p70(S6k), MAP kinase, and p90(rsk) in mouse C2C12 myogenic cells exposed to high glucose and high insulin. Pol J Vet Sci 2005;8(3):241-50. 3. Studies involving the GH-IGF axis: Lessons from IGF-I and IGF-I receptor gene targeting mouse models. J Endocrinol Invest 2005;28(5 Suppl):19-22. 4. Methionine-deficient diet extends mouse lifespan, slows immune and lens aging, alters glucose, T4, IGF-I and insulin levels, and increases hepatocyte MIF levels and stress resistance. Aging Cell 2005 Jun;4(3):119-25. 5. Insulin-like growth factor-I stimulated DNA replication in mouse endometrial stromal cells. J Reprod Dev 2005 Jun;51(3):305-13. 6. Insulin-like growth factor-I stimulates cell proliferation in the outer layer of Hertwig's epithelial root sheath and elongation of the tooth root in mouse molars in vitro. Cell Tissue Res 2005 Apr;320(1):69-75.

Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.