| Species : |
Human |
| Source : |
E.coli |
| Protein Length : |
165 |
| Description : |
Interferon-Alpha 2a (IFN-Alpha 2a), Human produced by leukocytes is a member of Interferon family. IFN-alpha is mainly involved in innate immune response against a broad range of viral infections. IFN-alpha 2 has three acid stable forms (a,b,c) signaling through IFNAR2. IFN-alpha 2a shares 99.4%, 98.8% aa sequence identity with IFN-alpha 2b and 2c respectively. IFN-alpha contains four highly conserved cysteine residues which form two disulfide bonds, one of which is necessary for biological activity. |
| Form : |
Sterile Filtered White lyophilized (freeze-dried) powder. |
| Bio-activity : |
ED50 < 0.1 ng/mL, measured by a cytotoxicity assay using TF-1 Cells, corresponding to a specific activity of > 1.0 × 10^7 units/mg. |
| Molecular Mass : |
19.2kDa, observed by reducing SDS-PAGE. |
| AA Sequence : |
CDLPQTHSLGSRRTLMLLAQMRKISLFSCLKDRHDFGFPQEEFGNQFQKAETIPVLHEMIQQIFNLFSTKDSSAAWDETLLDKFYTELYQQLNDLEACVIQGVGVTETPLMKEDSILAVRKYFQRITLYLKEKKYSPCAWEVVRAEIMRSFSLSTNLQESLRSKE |
| Endotoxin : |
< 0.2 EU/μg, determined by LAL method. |
| Purity : |
> 95% by SDS-PAGE and HPLC analyses. |
| Storage : |
Lyophilized recombinant human Interferon-Alpha 2a (rhIFN-Alpha 2a) remains stable up to 6 months at -80 centigrade from date of receipt. Upon reconstitution, rhIFN-Alpha 2a should be stable up to 2 weeks at 4 centigrade or up to 3 months at -20 centigrade. |
| Storage Buffer : |
Lyophilized after extensive dialysis against PBS. |
| Reconstitution : |
Reconstituted in ddH2O at 100 μg/mL. |