DPP4, dipeptidyl peptidase-4 is a complex enzyme expressed on the surface of most cell types and is a serine exopeptidase that cleaves x-proline dipeptides from the N-terminal of polypeptides. DPP4 protein is associated with intracellular signal transduction, apoptosis and plays an important role in tumor biology. There are at least 63 substrates which can bind specifically to DPP4 enzyme including growth factors, chemokines, neuro peptides. Furthermore, DPP4 plays a major role in glucose metabolism by cleaving incretins such as glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1). Middle East respiratory syndrome coronavirus has been found to bind to DPP4. It is found on the surface of cells in the airways and kidneys. Recombinant human DPPIV/CD26, fused to hIgG-Tag at C-terminal, was expressed in HEK293 cell and purified by using conventional chromatography techniques. Source: Recombinant protein corresponding to aa29-766 from human DPPIV, fused to hlgG-Tag at C-terminal, expressed in HEK293. Molecular Weight: ~112.1kDa (977aa) Amino Acid Sequence: NKGTDD ATADSRKTYT LTDYLKNTYR LKLYSLRWIS DHEYLYKQEN NILVFNAEYG NSSVFLENST FDEFGHSIND YSISPDGQFI LLEYNYVKQW RHSYTASYDI YDLNKRQLIT EERIPNNTQW VTWSPVGHKL AYVWNNDIYV KIEPNLPSYR ITWTGKEDII YNGITDWVYE EEVFSAYSAL WWSPNGTFLA YAQFNDTEVP LIEYSFYSDE SLQYPKTVRV PYPKAGAVNP TVKFFVVNTD SLSSVTNATS IQITAPASML IGDHYLCDVT WATQERISLQ WLRRIQNYSV MDICDYDESS GRWNCLVARQ HIEMSTTGWV GRFRPSEPHF TLDGNSFYKI ISNEEGYRHI CYFQIDKKDC TFITKGTWEV IGIEALTSDY LYYISNEYKG MPGGRNLYKI QLSDYTKVTC LSCELNPERC QYYSVSFSKE AKYYQLRCSG PGLPLYTLHS SVNDKGLRVL EDNSALDKML QNVQMPSKKL DFIILNETKF WYQMILPPHF DKSKKYPLLL DVYAGPCSQK ADTVFRLNWA TYLASTENII VASFDGRGSG YQGDKIMHAI NRRLGTFEVE DQIEAARQFS KMGFVDNKRI AIWGWSYGGY VTSMVLGSGS GVFKCGIAVA PVSRWEYYDS VYTERYMGLP TPEDNLDHYR NSTVMSRAEN FKQVEYLLIH GTADDNVHFQ QSAQISKALV DVGVDFQAMW YTDEDHGIAS STAHQHIYTH MSHFIKQCFS LP Biological Activity: 1.Measured by its binding ability in a functional ELISA with MERS-CoV Spike S1 Subunit. The ED50 range 250ng/ml. 2.Measured by its binding ability in a functional ELISA with MERS-CoV Spike RBD. The ED50 range 200 ng/ml. 3.Measured by its binding ability in a functional ELISA with MERS-CoV Spike. The ED50 range 120ng/ml. 4.Specific activity is > 15,000pmol/min/ug in which one unit defined as the amount of enzyme that hydrolyze 1pmole of H-Gly-Pro-AMC.HBr to H-Gly-Pro and AMC per minute at pH 8.0 at 37°C. Applications: Suitable for use in SDS-PAGE, Enzyme Activity, Bioactivity. Other applications not tested. Recommended Dilution: Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20C. Aliquots are stable for 6 months after receipt 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.
