Recombinant Rat Insulinlike growth factor I (rRtIGF-1)

SKU: orb1726268

Description

Insulinlike growth factor I, also known as somatomedin C, is the dominant effector of growth hormone and is structurally homologous to proinsulin. It shares 61% aa sequence identity with mature rat IGF-II. Circulating IGF-I is produced by hepatocytes, while local IGF-I is produced by many other tissues in which it has paracrine effects. IGF-I induces the proliferation, migration, and differentiation of a wide variety of cell types during development and postnatally.

Images & Validation

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Application Notes	We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at <-20°C. Further dilutions should be made in appropriate buffered solutions.

Key Properties

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Source	Escherichia coli.
Biological Activity	Measured in a serum free cell proliferation assay using MCF7 human breast adenocarcinoma cells. The ED50 for this effect is typically 0.6-3 ng/mL.
Molecular Weight	Approximately 7.7 kDa, a single non-glycosylated polypeptide chain containing 70 amino acid residues.
Protein Sequence	GPETLCGAEL VDALQFVCGP RGFYFNKPTG YGSSIRRAPQ TGIVDECCFR SCDLRRLEMY CAPLKPTKSA
Purification	>97% by SDS-PAGE and HPLC analyses.
Purity	>97% by SDS-PAGE and HPLC analyses.
Endotoxins	Less than 1EU/μg of rRtIGF-1 as determined by LAL method.

Storage & Handling

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Storage	This lyophilized preparation is stable at 2-8°C, but should be kept at -20°C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8°C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20°C to -70°C. Avoid repeated freeze/thaw cycles.
Form/Appearance	Lyophilized from a 0.2mm filtered concentrated solution in PBS, pH 7.4.
Buffer/Preservatives	Lyophilized from a 0.2mm filtered concentrated solution in PBS, pH 7.4.
Disclaimer	For research use only

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