¾Æ¹Ì³ë»ê : ¾ÆÀ̼ҷù½Å Isoleucine


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¾ÆÀ̼ҷù½Å Isoleucine

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- ºñ´Ü¹éÁú ¾Æ¹Ì³ë»ê

- ¾Æ¹Ì³ë»êÀÇ Á¾·ù
- Gluamic acid, glutamine
- Aspartic acid, asparagine
- serine, threonine, glycine, valine
- alanine, leucine, isoleucine
- lysine, arginine, histidine, proline
- methionine, Cysteine
- Tyrosine, Phenylalanie, Tryptophan

- ºÐÁöÇü:  valine , leucine, isoleucine

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Isoleucine is both a glucogenic and a ketogenic amino acid. After transamination with alpha-ketoglutarate the carbon skeleton can be converted into either Succinyl CoA, and fed into the TCA cycle for oxidation or conversion into oxaloacetate for gluconeogenesis (hence glucogenic). It can also be converted into Acetyl CoA and fed into the TCA cycle by condensing with oxaloacetate to form citrate. In mammals Acetyl CoA cannot be converted back to carbohydrate but can be used in the synthesis of ketone bodies or fatty acids, hence ketogenic.

Biotin, sometimes referred to as Vitamin B7 or Vitamin H, is an absolute requirement for the full catabolism of isoleucine (as well as leucine). Without adequate biotin, the human body will be unable to fully break down isoleucine and leucine molecules [3]. This can lead to numerous physiological issues (related to muscle maintenance and protein synthesis, lipid metabolism, and fatty acid metabolism) as well as cognitive issues resulting from general metabolic pathway failure and the irritating effects of hydroxyisovalerate, a byproduct of incomplete isoleucine catabolism. Isovaleric acidemia is an example of a disorder caused by incomplete catabolism of leucine.