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Human pancreatic lipase (HPL) is the main enzyme that breaks down dietary fats in the human digestive system. [5] To exhibit optimal enzyme activity in the gut lumen, PL requires another protein, colipase, which is also secreted by the pancreas. [18] lysosomal lipase: LIPA: interior space of organelle: lysosome
Lipid metabolism is the synthesis and degradation of lipids in cells, involving the breakdown and storage of fats for energy and the synthesis of structural and functional lipids, such as those involved in the construction of cell membranes. In animals, these fats are obtained from food and are synthesized by the liver. [1]
This enzyme catalyzes the hydrolysis of triacylglycerol to diacylglycerol. Subsequently, hormone-sensitive lipase (HSL) catalyzes the hydrolysis of diacylglycerol to monoacylglycerol and monoacylglycerol lipase (MGL) catalyzes the hydrolysis of monoacylglycerol to glycerol. [4] Perilipin 1A is a key protein regulator of lipolysis in adipose tissue.
Enzymes, acyltransferases and transacylases, incorporate fatty acids in phospholipids, triacylglycerols, etc. by transferring fatty acids between an acyl acceptor and donor. They also have the task of synthesizing bioactive lipids as well as their precursor molecules. [38]
Lysosomes contain a variety of enzymes, enabling the cell to break down various biomolecules it engulfs, including peptides, nucleic acids, carbohydrates, and lipids (lysosomal lipase). The enzymes responsible for this hydrolysis require an acidic environment for optimal activity.
Fatty acid degradation is the process in which fatty acids are broken down into their metabolites, in the end generating acetyl-CoA, the entry molecule for the citric acid cycle, the main energy supply of living organisms, including bacteria and animals. [1] [2] It includes three major steps: Lipolysis of and release from adipose tissue
Hydrolase enzymes are important for the body because they have degradative properties. In lipids, lipases contribute to the breakdown of fats and lipoproteins and other larger molecules into smaller molecules like fatty acids and glycerol. Fatty acids and other small molecules are used for synthesis and as a source of energy. [1]
16956 Ensembl ENSG00000175445 ENSMUSG00000015568 UniProt P06858 P11152 RefSeq (mRNA) NM_000237 NM_008509 RefSeq (protein) NP_000228 NP_032535 Location (UCSC) Chr 8: 19.9 – 19.97 Mb Chr 8: 69.33 – 69.36 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Lipoprotein lipase Identifiers EC no. 3.1.1.34 CAS no. 9004-02-8 Databases IntEnz IntEnz view BRENDA BRENDA entry ExPASy NiceZyme ...