This is an audio version of the Wikipedia Article:
Methionine
00:00:45 1 Biomedical details
00:01:36 2 A proteinogenic amino acid
00:02:49 2.1 Encoding
00:04:08 3 Derivatives
00:04:17 3.1 iS/i-adenosyl-methionine
00:05:28 4 Biosynthesis
00:09:40 4.1 Trans-sulfurylation pathway
00:10:21 5 Other biochemical pathways
00:10:38 5.1 Catabolism
00:11:11 5.2 Regeneration
00:11:57 5.3 Reverse-transulfurylation pathway: conversion to cysteine
00:12:48 5.4 Ethylene synthesis
00:13:06 6 Chemical synthesis
00:13:30 7 Human nutrition
00:13:39 7.1 Requirements
00:14:06 7.2 Dietary sources
00:14:40 8 Restriction
00:16:57 9 Health
00:17:43 10 Other uses
00:18:34 11 See also
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SUMMARY
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Methionine (symbol Met or M) () is an essential amino acid in humans. As the substrate for other amino acids such as cysteine and taurine, versatile compounds such as SAM-e, and the important antioxidant glutathione, methionine plays a critical role in the metabolism and health of many species, including humans. It is encoded by the codon AUG.
Methionine is also an important part of angiogenesis, the growth of new blood vessels. Supplementation may benefit those suffering from copper poisoning. Overconsumption of methionine, the methyl group donor in DNA methylation, is related to cancer growth in a number of studies. Methionine was first isolated in 1921 by John Howard Mueller.
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