Colipase belongs to the colipase family. Structural studies of the complex and of colipase alone have revealed the functionality of its architecture. It is a small protein with five conserved disulphide bonds. Structural analogies have been recognised between a developmental protein, the pancreatic lipase C-terminal domain, the N-terminal domains of lipoxygenases and the C-terminal domain of alpha-toxin. Colipase can only be detected in pancreatic acinar cells, suggesting regulation of expression by tissue-specific elements. Colipase allows lipase to anchor noncovalently to the surface of lipid micelles, counteracting the destabilizing influence of intestinal bile salts. Without colipase the enzyme is washed off by bile salts, which have an inhibitory effect on the lipase. Colipase is a cofactor needed by pancreatic lipase for efficient dietary lipid hydrolysis. It binds to the C-terminal, non-catalytic domain of lipase, thereby stabilising as active conformation and considerably increasing the overall hydrophobic binding site.
Product Name:
Human CLPS/Colipase Recombinant Protein (RPES4522)
Product Code:
RPES4522
Size:
100 µg
Species:
Human
Expressed Host:
Baculovirus-Insect Cells
Synonyms:
CLPS
Accession:
P04118
Sequence:
Met 1-Gln 112
Fusion tag:
C-His
Activity:
Measured by its binding ability in a functional ELISA. Immobilized human CLPS-His at 10µg/mL(100?L/well) can bind biotinylated human PNLIP-His.The EC50 of biotinylated human PNLIP-His is 0.57-1.33µg/mL.
Endotoxin:
<1.0 EU per µg as determined by the LAL method.
Protein Construction:
A DNA sequence encoding the human CLPS (P04118) (Met 1-Gln 112) was fused with a polyhistidine tag at the C-terminus.
Purity:
> 90 % as determined by reducing SDS-PAGE.
Mol Mass:
11.5 kDa
AP Mol Mass:
12 kDa
Formulation:
Lyophilized from sterile PBS, 500mM NaCl, pH 7.0, 10% gly
Shipping:
This product is provided as lyophilized powder which is shipped with ice packs.
Stability and Storage:
Lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.
