| DGAT1 | |||||||||||||||||||||||||||||||||||||||||||||||||||
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| Identifiers | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Aliases | DGAT1 , ARAT, ARGP1, DGAT, DIAR7, diacylglycerol O-acyltransferase 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||
| External IDs | OMIM: 604900 MGI: 1333825 HomoloGene: 7688 GeneCards: DGAT1 | ||||||||||||||||||||||||||||||||||||||||||||||||||
| EC number | 2.3.1.76 | ||||||||||||||||||||||||||||||||||||||||||||||||||
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| Wikidata | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Diacylglycerol O-acyltransferase 1 is an enzyme that in humans is encoded by the DGAT1 gene. [5]
This gene encodes a multipass transmembrane protein that functions as a key metabolic enzyme. The encoded protein catalyzes the conversion of diacylglycerol and fatty acyl CoA to triacylglycerol. This enzyme can also transfer acyl CoA to retinol. Activity of this protein may be associated with obesity and other metabolic diseases. [6] [7] This enzyme is essential for lactation in mice, [7] and mutations in this gene affect the composition and volume of milk produced by both cattle [8] and goats. [9] Without this gene activity, infants who have a mutation in this gene are incapable of breaking down fat. This lack of capability to break down fat causes diarrhea and vomiting which eventually causes FTT (Failure to Thrive) and need of TPN (Total Parenteral Nutrition) if not given correct formula. Further this will cause protein losing enteropathy and very low albumin. [10]
Very long-chain specific acyl-CoA dehydrogenase, mitochondrial (VLCAD) is an enzyme that in humans is encoded by the ACADVL gene.
Agouti-signaling protein is a protein that in humans is encoded by the ASIP gene. It is responsible for the distribution of melanin pigment in mammals. Agouti interacts with the melanocortin 1 receptor to determine whether the melanocyte produces phaeomelanin, or eumelanin. This interaction is responsible for making distinct light and dark bands in the hairs of animals such as the agouti, which the gene is named after. In other species such as horses, agouti signalling is responsible for determining which parts of the body will be red or black. Mice with wildtype agouti will be grey-brown, with each hair being partly yellow and partly black. Loss of function mutations in mice and other species cause black fur coloration, while mutations causing expression throughout the whole body in mice cause yellow fur and obesity.
Acyl-CoA dehydrogenase, C-2 to C-3 short chain is an enzyme that in humans is encoded by the ACADS gene. This gene encodes a tetrameric mitochondrial flavoprotein, which is a member of the acyl-CoA dehydrogenase family. This enzyme catalyzes the initial step of the mitochondrial fatty acid beta-oxidation pathway. The ACADS gene is associated with short-chain acyl-coenzyme A dehydrogenase deficiency.
Acyl-CoA dehydrogenase, long chain is a protein that in humans is encoded by the ACADL gene.
Lecithin–cholesterol acyltransferase is an enzyme, in many animals including humans, that converts free cholesterol into cholesteryl ester, which is then sequestered into the core of a lipoprotein particle, eventually making the newly synthesized HDL spherical and forcing the reaction to become unidirectional since the particles are removed from the surface. The enzyme is bound to high-density lipoproteins (HDLs) (alpha-LCAT) and LDLs (beta-LCAT) in the blood plasma. LCAT deficiency can cause impaired vision due to cholesterol corneal opacities, anemia, and kidney damage. It belongs to the family of phospholipid:diacylglycerol acyltransferases.
Carnitine palmitoyltransferase I (CPT1) also known as carnitine acyltransferase I, CPTI, CAT1, CoA:carnitine acyl transferase (CCAT), or palmitoylCoA transferase I, is a mitochondrial enzyme responsible for the formation of acyl carnitines by catalyzing the transfer of the acyl group of a long-chain fatty acyl-CoA from coenzyme A to l-carnitine. The product is often Palmitoylcarnitine, but other fatty acids may also be substrates. It is part of a family of enzymes called carnitine acyltransferases. This "preparation" allows for subsequent movement of the acyl carnitine from the cytosol into the intermembrane space of mitochondria.
ACADSB is a human gene that encodes short/branched chain specific acyl-CoA dehydrogenase (SBCAD), an enzyme in the acyl CoA dehydrogenase family.
Diglyceride acyltransferase, DGAT, catalyzes the formation of triglycerides (triacylglycerols) from diacylglycerol and acyl-CoA. The reaction catalyzed by DGAT is considered the terminal and only committed step in the acyl-CoA-dependent triglyceride synthesis, universally important in animal, plants, and microorganisms. The conversion is essential for intestinal absorption and adipose tissue formation in mammalian. DGAT1 are homologous to other membrane-bound O-acyltransferases, but not all other DGATs.
In enzymology, a long-chain-alcohol O-fatty-acyltransferase is an enzyme that catalyzes the chemical reaction
Sterol O-acyltransferase 1, also known as SOAT1, is an enzyme that in humans is encoded by the SOAT1 gene.
Adipose triglyceride lipase, also known as patatin-like phospholipase domain-containing protein 2 and ATGL, is an enzyme that in humans is encoded by the PNPLA2 gene. ATGL catalyses the first reaction of lipolysis, where triacylglycerols are hydrolysed to diacylglycerols.
1-acyl-sn-glycerol-3-phosphate acyltransferase beta is an enzyme that in humans is encoded by the AGPAT2 gene.
2-Acylglycerol O-acyltransferase 2 also known as acyl-CoA:monoacylglycerol acyltransferase 2 (MGAT2) or Diacylglycerol O-acyltransferase candidate 5 (DC5) is an enzyme that in humans is encoded by the MOGAT2 gene.
Glycerol-3-phosphate acyltransferase 3 (GPAT-3) is an enzyme that in humans is encoded by the AGPAT9 gene. GPAT-3 is also known as:
Lecithin retinol acyltransferase is an enzyme that in humans is encoded by the LRAT gene.
Lipid droplets, also referred to as lipid bodies, oil bodies or adiposomes, are lipid-rich cellular organelles that regulate the storage and hydrolysis of neutral lipids and are found largely in the adipose tissue. They also serve as a reservoir for cholesterol and acyl-glycerols for membrane formation and maintenance. Lipid droplets are found in all eukaryotic organisms and store a large portion of lipids in mammalian adipocytes. Initially, these lipid droplets were considered to merely serve as fat depots, but since the discovery in the 1990s of proteins in the lipid droplet coat that regulate lipid droplet dynamics and lipid metabolism, lipid droplets are seen as highly dynamic organelles that play a very important role in the regulation of intracellular lipid storage and lipid metabolism. The role of lipid droplets outside of lipid and cholesterol storage has recently begun to be elucidated and includes a close association to inflammatory responses through the synthesis and metabolism of eicosanoids and to metabolic disorders such as obesity, cancer, and atherosclerosis. In non-adipocytes, lipid droplets are known to play a role in protection from lipotoxicity by storage of fatty acids in the form of neutral triacylglycerol, which consists of three fatty acids bound to glycerol. Alternatively, fatty acids can be converted to lipid intermediates like diacylglycerol (DAG), ceramides and fatty acyl-CoAs. These lipid intermediates can impair insulin signaling, which is referred to as lipid-induced insulin resistance and lipotoxicity. Lipid droplets also serve as platforms for protein binding and degradation. Finally, lipid droplets are known to be exploited by pathogens such as the hepatitis C virus, the dengue virus and Chlamydia trachomatis among others.
Lysophospholipid acyltransferase 7 also known as membrane-bound O-acyltransferase domain-containing protein 7 (MBOAT7) is an enzyme that in humans is encoded by the MBOAT7 gene. It is homologous to other membrane-bound O-acyltransferases.
Ghrelin O-acyltransferase also known as membrane bound O-acyltransferase domain containing 4 is an enzyme that in humans is encoded by the MBOAT4 gene. It is homologous to other membrane-bound O-acyltransferases. It is a polytopic membrane protein what takes part in lipid signaling reactions. It is the only known enzyme that catalyzes the acylation of ghrelin through the transfer of n-octanoic acid to ghrelin Ser3. Ghrelin O-acyltransferase function is essential in regulation of appetite and the release of growth hormone. Ghrelin O-acyltransferase is a target for scientific research due to promising applications in the treatment of diabetes, eating disorders, and metabolic diseases.
Monoacylglycerol O-acyltransferase 3 is a protein that in humans is encoded by the MOGAT3 gene.
Diacylglycerol O-acyltransferase 2 (DGAT2) is a protein that in humans is encoded by the DGAT2 gene.
This article incorporates text from the United States National Library of Medicine, which is in the public domain.
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