What is fatty acid?

  • (noun): Any of a class of aliphatic monocarboxylic acids that form part of a lipid molecule and can be derived from fat by hydrolysis; fatty acids are simple molecules built around a series of carbon atoms linked together in a chain of 12 to 22 carbon atoms.

Fatty Acid

In chemistry, and especially in biochemistry, a fatty acid is a carboxylic acid with a long aliphatic tail (chain), which is either saturated or unsaturated. Most naturally occurring fatty acids have a chain of an even number of carbon atoms, from 4 to 28. Fatty acids are usually derived from triglycerides or phospholipids. When they are not attached to other molecules, they are known as "free" fatty acids. Fatty acids are important sources of fuel because, when metabolized, they yield large quantities of ATP. Many cell types can use either glucose or fatty acids for this purpose. In particular, heart and skeletal muscle prefer fatty acids. The brain cannot use fatty acids as a source of fuel; it relies on glucose or ketone bodies.

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Some articles on fatty acid:

Linoleoyl-Co A Desaturase
... Other names in common use include Delta6-desaturase, Delta6-fatty acyl-CoA desaturase, Delta6-acyl CoA desaturase, fatty acid Delta6-desaturase, fatty acid 6-desaturase, linoleate desaturase ... This enzyme participates in linoleic acid metabolism ...
Methylene-fatty-acyl-phospholipid Synthase
... In enzymology, a methylene-fatty-acyl-phospholipid synthase (EC 2.1.1.16) is an enzyme that catalyzes the chemical reaction S-adenosyl-L-methionine + phospholipid olefinic fatty acid S-adenosyl-L-homocystein ...
Long-chain-fatty-acid—Co A Ligase
... The Long chain fatty acyl-CoA synthetase enzyme is a member of the ligase family that activates the breakdown of complex fatty acids ... Long chain fatty acyl-CoA synthetase plays a crucial role in intermediary metabolism by catalyzing the formation of fatty acyl-CoA by a two-step process proceeding through an ... pre-step reaction for β-oxidation of fatty acids or can be incorporated in phospholipids ...
Fatty Acid - Circulation - Distribution
... Blood fatty acids are in different forms in different stages in the blood circulation ... In addition, when released from adipocytes, fatty acids exist in the blood as free fatty acids ... It is proposed that the blend of fatty acids exuded by mammalian skin, together with lactic acid and pyruvic acid, is distinctive and enables animals with a keen sense of smell to differentiate individuals ...
Pathophysiology Of Chronic Fatigue Syndrome - Other Hypotheses - Essential Fatty Acid Deficiencies
... Essential fatty acid levels Several studies published between 1990 and 2005 reported finding reduced levels of Omega-6 or Omega-3 essential fatty acids in cell ... CFS patients (Warren et al.) found no significant differences in fatty acid levels between treatment and placebo groups ... of CFS treatments compared two studies of essential fatty acids, concluding that there is insufficient evidence to recommend it as a treatment for CFS ...