Reaction Process: Reactome:R-HSA-77348

Octanoyl-CoA

C29H50N7O17P3S (893.2196640000001)

Octanoyl-CoA is a substrate for Trifunctional enzyme beta subunit (mitochondrial), Acyl-coenzyme A oxidase 1 (peroxisomal), 3-ketoacyl-CoA thiolase (mitochondrial), 3-ketoacyl-CoA thiolase (peroxisomal), Nuclear receptor-binding factor 1, Acyl-CoA dehydrogenase (long-chain specific, mitochondrial), Acyl-coenzyme A oxidase 3 (peroxisomal), HPDHase, Acyl-CoA dehydrogenase (medium-chain specific, mitochondrial), Acyl-coenzyme A oxidase 2 (peroxisomal) and Peroxisomal carnitine O-octanoyltransferase. [HMDB]. Octanoyl-CoA is found in many foods, some of which are millet, loganberry, horseradish, and sea-buckthornberry. Octanoyl-CoA is a substrate for Trifunctional enzyme beta subunit (mitochondrial), Acyl-coenzyme A oxidase 1 (peroxisomal), 3-ketoacyl-CoA thiolase (mitochondrial), 3-ketoacyl-CoA thiolase (peroxisomal), Nuclear receptor-binding factor 1, Acyl-CoA dehydrogenase (long-chain specific, mitochondrial), Acyl-coenzyme A oxidase 3 (peroxisomal), HPDHase, Acyl-CoA dehydrogenase (medium-chain specific, mitochondrial), Acyl-coenzyme A oxidase 2 (peroxisomal) and Peroxisomal carnitine O-octanoyltransferase.

Water

H2O (18.0105642)

Water is a chemical substance that is essential to all known forms of life. It appears colorless to the naked eye in small quantities, though it is actually slightly blue in color. It covers 71\\% of Earths surface. Current estimates suggest that there are 1.4 billion cubic kilometers (330 million m3) of it available on Earth, and it exists in many forms. It appears mostly in the oceans (saltwater) and polar ice caps, but it is also present as clouds, rain water, rivers, freshwater aquifers, lakes, and sea ice. Water in these bodies perpetually moves through a cycle of evaporation, precipitation, and runoff to the sea. Clean water is essential to human life. In many parts of the world, it is in short supply. From a biological standpoint, water has many distinct properties that are critical for the proliferation of life that set it apart from other substances. It carries out this role by allowing organic compounds to react in ways that ultimately allow replication. All known forms of life depend on water. Water is vital both as a solvent in which many of the bodys solutes dissolve and as an essential part of many metabolic processes within the body. Metabolism is the sum total of anabolism and catabolism. In anabolism, water is removed from molecules (through energy requiring enzymatic chemical reactions) in order to grow larger molecules (e.g. starches, triglycerides and proteins for storage of fuels and information). In catabolism, water is used to break bonds in order to generate smaller molecules (e.g. glucose, fatty acids and amino acids to be used for fuels for energy use or other purposes). Water is thus essential and central to these metabolic processes. Water is also central to photosynthesis and respiration. Photosynthetic cells use the suns energy to split off waters hydrogen from oxygen. Hydrogen is combined with CO2 (absorbed from air or water) to form glucose and release oxygen. All living cells use such fuels and oxidize the hydrogen and carbon to capture the suns energy and reform water and CO2 in the process (cellular respiration). Water is also central to acid-base neutrality and enzyme function. An acid, a hydrogen ion (H+, that is, a proton) donor, can be neutralized by a base, a proton acceptor such as hydroxide ion (OH-) to form water. Water is considered to be neutral, with a pH (the negative log of the hydrogen ion concentration) of 7. Acids have pH values less than 7 while bases have values greater than 7. Stomach acid (HCl) is useful to digestion. However, its corrosive effect on the esophagus during reflux can temporarily be neutralized by ingestion of a base such as aluminum hydroxide to produce the neutral molecules water and the salt aluminum chloride. Human biochemistry that involves enzymes usually performs optimally around a biologically neutral pH of 7.4. (Wikipedia). Water, also known as purified water or dihydrogen oxide, is a member of the class of compounds known as homogeneous other non-metal compounds. Homogeneous other non-metal compounds are inorganic non-metallic compounds in which the largest atom belongs to the class of other nonmetals. Water can be found in a number of food items such as caraway, oxheart cabbage, alaska wild rhubarb, and japanese walnut, which makes water a potential biomarker for the consumption of these food products. Water can be found primarily in most biofluids, including ascites Fluid, blood, cerebrospinal fluid (CSF), and lymph, as well as throughout all human tissues. Water exists in all living species, ranging from bacteria to humans. In humans, water is involved in several metabolic pathways, some of which include cardiolipin biosynthesis CL(20:4(5Z,8Z,11Z,14Z)/18:0/20:4(5Z,8Z,11Z,14Z)/18:2(9Z,12Z)), cardiolipin biosynthesis cl(i-13:0/i-15:0/i-20:0/i-24:0), cardiolipin biosynthesis CL(18:0/18:0/20:4(5Z,8Z,11Z,14Z)/22:5(7Z,10Z,13Z,16Z,19Z)), and cardiolipin biosynthesis cl(a-13:0/i-18:0/i-13:0/i-19:0). Water is also involved in several metabolic disorders, some of which include de novo triacylglycerol biosynthesis tg(i-21:0/i-13:0/21:0), de novo triacylglycerol biosynthesis tg(22:0/20:0/i-20:0), de novo triacylglycerol biosynthesis tg(a-21:0/i-20:0/i-14:0), and de novo triacylglycerol biosynthesis tg(i-21:0/a-17:0/i-12:0). Water is a drug which is used for diluting or dissolving drugs for intravenous, intramuscular or subcutaneous injection, according to instructions of the manufacturer of the drug to be administered [fda label]. Water plays an important role in the world economy. Approximately 70\\% of the freshwater used by humans goes to agriculture. Fishing in salt and fresh water bodies is a major source of food for many parts of the world. Much of long-distance trade of commodities (such as oil and natural gas) and manufactured products is transported by boats through seas, rivers, lakes, and canals. Large quantities of water, ice, and steam are used for cooling and heating, in industry and homes. Water is an excellent solvent for a wide variety of chemical substances; as such it is widely used in industrial processes, and in cooking and washing. Water is also central to many sports and other forms of entertainment, such as swimming, pleasure boating, boat racing, surfing, sport fishing, and diving .

(S)-Hydroxyoctanoyl-CoA

C29H50N7O18P3S (909.2145790000001)

Coenzyme A is notable for its role in the synthesis and oxidation of fatty acids. Since coenzyme A is chemically a thiol, it can react with carboxylic acids to form thioesters, thus functioning as an acyl group carrier. It assists in transferring fatty acids from the cytoplasm to mitochondria. Specifically (S)-Hydroxyoctanoyl-CoA is involved in fatty acid metabolism. It is the product of a reaction between 3-Oxooctanoyl-CoA and two enzymes; 3-hydroxyacyl-CoA Dehydrogenase and long-chain- 3-hydroxyacyl-CoA dehydrogenase. [HMDB] Coenzyme A is notable for its role in the synthesis and oxidation of fatty acids. Since coenzyme A is chemically a thiol, it can react with carboxylic acids to form thioesters, thus functioning as an acyl group carrier. It assists in transferring fatty acids from the cytoplasm to mitochondria. Specifically (S)-Hydroxyoctanoyl-CoA is involved in fatty acid metabolism. It is the product of a reaction between 3-Oxooctanoyl-CoA and two enzymes; 3-hydroxyacyl-CoA Dehydrogenase and long-chain- 3-hydroxyacyl-CoA dehydrogenase.

3-Oxooctanoyl-CoA

C29H48N7O18P3S (907.1989298)

3-Oxooctanoyl-CoA is the substrate of the acetyl-CoA C-acyltransferase/oxoacyl-CoA thiolase A (EC 2.3.1.16, SCP2/3-oxoacyl-CoA thiolase) present in peroxisomes from normal liver. Peroxisomes beta -oxidize a wide variety of substrates including straight chain fatty acids, 2-methyl-branched fatty acids, and the side chain of the bile acid intermediates di- and trihydroxycoprostanic acids. Peroxisomes contain several beta -oxidation pathways with different substrate specificities; or example, straight chain acyl-CoAs are desaturated by palmitoyl-CoA oxidase, and their enoyl-CoAs are then converted to 3-oxoacyl-CoAs by MFP-1, which forms (hydration) and dehydrogenates L-3(3S)-hydroxyacyl-CoAs; for example, straight chain acyl-CoAs are desaturated by palmitoyl-CoA oxidase (23), and their enoyl-CoAs are then converted to 3-oxoacyl-CoAs by 3-hydroxyacyl-CoA dehydrogenase (EC 1.1.1.35), which forms (hydration) and dehydrogenates L-3(3S)-hydroxyacyl-CoAs and their enoyl-CoAs are then converted to the corresponding 3-oxoacyl-CoAs by long-chain-enoyl-CoA hydratase(EC 4.2.1.74), which forms and dehydrogenates D-3(3R)-hydroxyacyl-CoAs. (PMID: 9325339). 3-Oxooctanoyl-CoA is the substrate of the acetyl-CoA C-acyltransferase/oxoacyl-CoA thiolase A (EC 2.3.1.16, SCP2/3-oxoacyl-CoA thiolase) present in peroxisomes from normal liver.

S-2-Octenoyl CoA

C29H48N7O17P3S (891.2040148)

S-2-Octenoyl coenzyme A is an intermediate metabolite of fatty acid metabolism. Mitochondrial beta-oxidation of saturated acyl-CoA esters proceeds by a repeated cycle of four concerted reactions: flavoprotein-linked dehydrogenation, hydration, NAD-linked dehydrogenation and thiolysis. The three chain-length-specific acyl-CoA dehydrogenases which catalyse the first dehydrogenation step are linked to the respiratory chain by the electron-transferring flavoprotein (ETF) and ETF: ubiquinone oxidoreductase (ETF: QO). The second dehydrogenation step is catalysed by two chain-length-specific NAD+-dependent 3-hydroxyacyl-CoA dehydrogenases. The control of beta-oxidation in the mitochondrial matrix occurs at several steps and depends on the redox state and the rate of recycling of CoA. The rate is lowered with reduced states, since high NAD+/NADH ratios impair the activity of the hydroxyacyl-CoA dehydrogenase and increase the formation of ETF semiquinone (ETFSq), which is a potent inhibitor of the acyl-CoA dehydrogenases. These changes affect the steady-state concentrations of acyl-CoA intermediates, which in turn may change the control strength of other enzymes of the pathway. In liver mitochondria, acetyl-CoA produced by each cycle of beta-oxidation has four major routes of disposal: ketogenesis, oxidation by the citrate cycle, conversion into acetylcarnitine or hydrolysis to acetate; each of these reactions generates free CoA. During maximum flux through beta-oxidation, up to 95 \\% of the mitochondrial CoA pool is acylated, and thus the rate of recycling of CoA may partly control beta-oxidation. Increased steady-state concentrations of some acyl-CoA esters may also occur when one or more of the enzymes of beta-oxidation is inhibited, as in hypoglycin poisoning, or where one or more of the enzymes of the pathway is absent. Such inborn errors of beta-oxidation are being increasingly recognized as important causes of disease, especially in children, and deficiencies of long-chain-acyl-CoA dehydrogenase, medium-chain-acyl-CoA dehydrogenase, short-chain-acyl-CoA dehydrogenase, ETF, ETF: QO and acetoacetyl-CoA thiolase have been described. (PMID: 2818568).

Hydrogen Ion

H+ (1.0078246)

Hydrogen ion, also known as proton or h+, is a member of the class of compounds known as other non-metal hydrides. Other non-metal hydrides are inorganic compounds in which the heaviest atom bonded to a hydrogen atom is belongs to the class of other non-metals. Hydrogen ion can be found in a number of food items such as lowbush blueberry, groundcherry, parsley, and tarragon, which makes hydrogen ion a potential biomarker for the consumption of these food products. Hydrogen ion exists in all living organisms, ranging from bacteria to humans. In humans, hydrogen ion is involved in several metabolic pathways, some of which include cardiolipin biosynthesis cl(i-13:0/a-25:0/a-21:0/i-15:0), cardiolipin biosynthesis cl(a-13:0/a-17:0/i-13:0/a-25:0), cardiolipin biosynthesis cl(i-12:0/i-13:0/a-17:0/a-15:0), and cardiolipin biosynthesis CL(16:1(9Z)/22:5(4Z,7Z,10Z,13Z,16Z)/18:1(11Z)/22:5(7Z,10Z,13Z,16Z,19Z)). Hydrogen ion is also involved in several metabolic disorders, some of which include de novo triacylglycerol biosynthesis TG(20:3(8Z,11Z,14Z)/22:6(4Z,7Z,10Z,13Z,16Z,19Z)/22:5(7Z,10Z,13Z,16Z,19Z)), de novo triacylglycerol biosynthesis TG(18:2(9Z,12Z)/20:0/20:4(5Z,8Z,11Z,14Z)), de novo triacylglycerol biosynthesis TG(18:4(6Z,9Z,12Z,15Z)/18:3(9Z,12Z,15Z)/18:4(6Z,9Z,12Z,15Z)), and de novo triacylglycerol biosynthesis TG(24:0/20:5(5Z,8Z,11Z,14Z,17Z)/24:0). A hydrogen ion is created when a hydrogen atom loses or gains an electron. A positively charged hydrogen ion (or proton) can readily combine with other particles and therefore is only seen isolated when it is in a gaseous state or a nearly particle-free space. Due to its extremely high charge density of approximately 2×1010 times that of a sodium ion, the bare hydrogen ion cannot exist freely in solution as it readily hydrates, i.e., bonds quickly. The hydrogen ion is recommended by IUPAC as a general term for all ions of hydrogen and its isotopes. Depending on the charge of the ion, two different classes can be distinguished: positively charged ions and negatively charged ions . Hydrogen ion is recommended by IUPAC as a general term for all ions of hydrogen and its isotopes. Depending on the charge of the ion, two different classes can be distinguished: positively charged ions and negatively charged ions. Under aqueous conditions found in biochemistry, hydrogen ions exist as the hydrated form hydronium, H3O+, but these are often still referred to as hydrogen ions or even protons by biochemists. [Wikipedia])

Nicotinamide adenine dinucleotide

C21H26N7O14P2- (662.1012936000001)

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coenzyme A(4-)

C21H32N7O16P3S-4 (763.0839062)

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beta-NADH

C21H27N7O14P2-2 (663.1091182000001)

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acetyl-CoA(4-)

C23H34N7O17P3S-4 (805.0944704000001)

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FADH2 dianion

C27H33N9O15P2-2 (785.1571288000001)

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hexanoyl-CoA(4-)

C27H42N7O17P3S-4 (861.1570672000001)

FAD trianion

C27H30N9O15P2-3 (782.1336550000001)

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