Aviva Systems Biology Corporation products

STAT3: signal transducer and activator of transcription 3 (acute-phase response factor). The protein encoded by this gene is a member of the STAT protein family. In response to cytokines and growth factors, STAT family members are phosphorylated by the receptor associated kinases, and then form homo- or heterodimers that translocate to the cell nucleus where they act as transcription activators. This protein is activated through phosphorylation in response to various cytokines and growth factors including IFNs, EGF, IL5, IL6, HGF, LIF and BMP2. This protein mediates the expression of a variety of genes in response to cell stimuli, and thus plays a key role in many cellular processes such as cell growth and apoptosis. The small GTPase Rac1 has been shown to bind and regulate the activity of this protein. PIAS3 protein is a specific inhibitor of this protein. Three alternatively spliced transcript variants encoding distinct isoforms have been described.

Similarity: Contains 1 fibrinogen C-terminal domain. Function: Fibrinogen has a double function yielding monomers that polymerize into fibrin and acting as a cofactor in platelet aggregation.

Aviva Systems Biology MMP9 ELISA Kit (Rat) (OKEH00522) is based on standard sandwich enzyme-linked immuno-sorbent assay technology. An antibody specific for Rat MMP9 has been pre-coated onto a 96-wellplate (12 x 8 Well Strips) and blocked. Standards or test samples are added to the wells, incubated and removed. After washing,a biotinylated detector antibody specific for Rat MMP9 is added, incubated and followed by washing. Avidin-Peroxidase Conjugate is then added, incubated and unbound conjugate is washed away.An enzymatic reaction is produced through the addition of TMB substrate which is catalyzed by HRP generating a blue color product that changes yellow after adding acidic stop solution. The density of yellow coloration read by absorbance at 450 nm is quantitatively proportional to the amount of sample Rat MMP9 captured in well.