The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
% Densitometry. ab115504 is filtered (0.4 µm).
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Preparation and Storage
Stability and Storage
Shipped at 4°C. Store at -80°C.
pH: 7.50 Constituents: 0.24% Tris buffer, 0.29% Sodium chloride
ReconstitutionAdd deionized water to prepare a working stock solution of approximately 0.5 mg/mL and let the lyophilized pellet dissolve completely. Aliquot reconstituted protein to avoid repeated freezing/thawing cycles and store at –80°C for long term storage. Reconstituted protein can be stored at 4°C for a limited period of time; it does not show any change after one week at 4°C.
FunctionThe primary function of this lipase is the hydrolysis of triglycerides of circulating chylomicrons and very low density lipoproteins (VLDL). Binding to heparin sulfate proteogylcans at the cell surface is vital to the function. The apolipoprotein, APOC2, acts as a coactivator of LPL activity in the presence of lipids on the luminal surface of vascular endothelium.
Involvement in diseaseDefects in LPL are the cause of lipoprotein lipase deficiency (LPL deficiency) [MIM:238600]; also known as familial chylomicronemia or hyperlipoproteinemia type I. LPL deficiency chylomicronemia is a recessive disorder usually manifesting in childhood. On a normal diet, patients often present with abdominal pain, hepatosplenomegaly, lipemia retinalis, eruptive xanthomata, and massive hypertriglyceridemia, sometimes complicated with acute pancreatitis.
Sequence similaritiesBelongs to the AB hydrolase superfamily. Lipase family. Contains 1 PLAT domain.
Post-translational modificationsTyrosine nitration after lipopolysaccharide (LPS) challenge down-regulates the lipase activity.
Cellular localizationCell membrane. Secreted. Locates to the plasma membrane of microvilli of hepatocytes with triacyl-glycerol-rich lipoproteins (TRL). Some of the bound LPL is then internalized and located inside non-coated endocytic vesicles.