D4943
Dipeptidyl Peptidase IV human
recombinant, expressed in baculovirus infected Sf9 cells, pkg of ≥1.0 units/vial, ≥10 units/mg protein
Synonym(e):
CD26, DPPIV, Dipeptidyl aminopeptidase IV, Glycoprotein GP110
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About This Item
Rekombinant
expressed in baculovirus infected Sf9 cells
Qualitätsniveau
Form
solution
Spezifische Aktivität
≥10 units/mg protein
Mol-Gew.
105 kDa
Verpackung
pkg of ≥1.0 units/vial
UniProt-Hinterlegungsnummer
Versandbedingung
wet ice
Lagertemp.
−20°C
Angaben zum Gen
human ... DPP4(1803)
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Allgemeine Beschreibung
C-terminal histidine-tagged. Soluble form (residues 29-766) MW 105 kDa
Anwendung
Human dipeptidyl peptidase IV has been used to study interactive hemodynamic effects of its inhibition and angiotensin-converting enzyme inhibition in humans. Human dipeptidyl peptidase IV has also been used in a study that informed the understanding of Hymenoptera venom allergies.
The enzyme from Sigma has been used to study the LC-MS (liquid chromatography-mass spectrometry) based assay method for DPP-IV inhibitor screening and substrate discovery.
Biochem./physiol. Wirkung
DPPIV has a post-proline dipeptidyl aminopeptidase activity that hydrolyzes N-terminal dipeptides from the unsubstituted N-terminus of peptides with the sequence of X-Pro-Z and X-Ala-Z. The optimum pH is found to be 7.4-8.7. DPPIV is involved in the regulation of several important physiological processes such as immune functions, inflammation, CNS, endocrine functions, bone marrow mobilization, cancer growth, cell adhesion, glucose hemostasis and sepsis/severe infection.
Native DPPIV is a ubiquitous type II transmembrane glycoprotein and a serine protease of the S9 prolyl-oligopeptidase family. In vivo, it is synthesized with a signal peptide, which functions as the membrane anchoring domain. There is an 88% sequence homology between the human and porcine kidney enzymes. Both exist as homodimers with a subunit molecular weight of ~30 kDa. The high mannose 100 kDa DPPIV precursor is processed in the Golgi to yield a 124 kDa heavily N-and O-linked mature glycoprotein. It is then sorted to the apical membrane through the concerted action of both N- and O-linked glycans and its association with lipid microdomains. The porcine enzyme contains 18.3% carbohydrates, which the glycan composition is 0.9% fucose, 3.4% mannose, 5.1% galactose, 8.2% glucosamine, and 0.7% sialic acid. DPPIV is highly expressed on endothelial cells, epithelial cells, and lymphocytes. It is also present in plasma in its soluble form.
Einheitendefinition
One unit will produce 1.0 μmole of p-nitroaniline from Gly-L-Pro p-nitroanilide per min in 100 mM Tris-HCl at pH 7.6 at 37 °C.
Physikalische Form
Supplied as a solution in 10 mM Tris-HCl, pH 7.6, 200 mM NaCl, 1 mM EDTA and 10% glycerol.
Sonstige Hinweise
View more information on Dipeptidyl Peptidase IV at www.sigma-aldrich.com/enzymeexplorer.
Lagerklassenschlüssel
10 - Combustible liquids
WGK
WGK 1
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
Analysenzertifikate (COA)
Suchen Sie nach Analysenzertifikate (COA), indem Sie die Lot-/Chargennummer des Produkts eingeben. Lot- und Chargennummern sind auf dem Produktetikett hinter den Wörtern ‘Lot’ oder ‘Batch’ (Lot oder Charge) zu finden.
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LC-MS based assay method for DPP-IV inhibitor screening and substrate discovery.
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Post-translational modification of proteins is an important regulatory event. Numerous biologically active peptides that play an essential role in cancerogenesis contain an evolutionary conserved proline residue as a proteolytic-processing regulatory element. Proline-specific proteases could therefore be viewed as important "check-points".
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