rev:    January 28, 2005


Return (human cytokine index)

Human Cytokine/Growth Factor/Chemokines Sample Spec sheets (subject to change without notice):

DATA SHEET:recombinant Insulin Like Growth Factor I

-The IGFs are mitogenic polypeptide growth factors that stimulate the proliferation and survival of various cell types including muscle, bone, and cartilage tissue in vitro. IGFs are predominantly produced by the liver, although a variety of tissues produce the IGFs at distinctive times. The IGFs belong to the Insulin gene family, which also contains insulin and relaxin. The IGFs are similar by structure and function to insulin, but have a much higher growth-promoting activity than insulin. IGF-II expression is influenced by placenta lactogen, while IGF-I expression is regulated by growth hormone. Both IGF-I and IGF-II signal through the tyrosine kinase type I receptor (IGF-IR), but, IGF-II can also signal through the IGF-II/Mannose-6-phosphate receptor. Mature IGFs are generated by proteolytic processing of inactive precursor proteins, which contain N-terminal and C-terminal propeptide regions. This recombinant human IGF-I and IGF-II are globular proteins containing 70 and 67 amino acids, respectively, and 3 intra-molecular disulfide bonds

Catalog#: RDI-111


Package Size: 100 micrograms $231.00   $219.00/vial 2+

                         MINI-PACK: cat#RDI-111p   $94.00/20ug

                        see  bulk below (and other species)

Supplied: Lyophilized protein with no additives

Source: E. Coli

Purity: >97% by SDS-Page analysis and N-terminal sequence analysis. Endotoxin less than 0.1ng per ug (1EU/ug) of IGF-I.

Reconstitution: The lyophilized material is soluble in water and most aqueous buffers. The lyophilized powder should be reconstituted in sterile water to a concentration of 1 ug/ul. Allow to set at least 30 minutes at 4 DEG C, roate, mix well. If desired, centrifuge for 1-2 minutes at 500-1000 rpm to concentrate material in vial. This solution can be diluted into other buffered solutions or stored at - 20DEG C for future use. For most in-vitro applications, IGF-I exerts its biological activity in the range of 0.2 to 20.0 ng/ml.

Storage: The lyophilized powder is stable at room temperature but it is best stored desiccated below 0 Deg C. Reconstituted IGF-I should be stored in working aliquots at -20DEG C. AVOID FREQUENT FREEZE THAW CYCLES.

Reactivity: This IGF-I is fully biologically active when compared to standards. The ED50 as determined by the dose-dependent stimulation of thymidine uptake by Balb-c 3T3 cells is approx 1.0 ng/ml, corresponding to a specific activity of 1 million units per milligram.

AA Sequence:



Precautions: For In vitro research Use Only. Not for usein or on humans or animals or for diagnostics. It is the responsibility of the user to comply with all local/state and Federal rules in the use of this product. We are not responsible for any patent infringements that might result with the use of or derivation of this product.

Bulk, cat#RDI-111-216X  $625.00/1mg   $562.00/mg 5-20  inquire for larger

see also rec mouse ILGF1,  cat#RDI-CYT229X  $2125/mg    $625.00/100ug

rec rat ILGF-1                     cat#RDI-CYT289X  $4000/mg    $625.00/100ug

rec Chicken ILGF-1            cat#RDI-CYT290X   $4000/mg    $625.00/100ug

rec Tuna ILGF1                  cat#RDI-CYT291X   $4000/mg     $625.00/100ug

rec Salmon/Trout ILGF1    cat#RDI-CYT293X    $5000.00/mg  $625.00/100ug

rec Bream ILGF1               cat#RDI-CYT294X    $5000.00/mg   $625.00/100ug

rec Barramundi ILGF1      cat#RDi-CYT292X     $4000.00/mg   $625.00/100ug

PLEASE CALL FOR BULK QUOTES!PLEASE CALL FOR BULK QUOTES! Also available monoclonal and polyclonal abs to IGF1, IGF2, IGFR, and IGFBP. see the antibody list.

34 Junction Square Drive

Concord MA 01742-3049


phone (978) 371-6446 or (800) 370-2222

fax     (978) 371-2266

Ordering terms


Return (human cytokine index)

all rights reserved by any/all copyright holders?