Secondary Products formed from S-Adenosyl-L-methionine

L-Methionine originates from L-homoserine, a product of L-aspartic acid metabolism (D 16). Key intermediates are 0-phospho-L-homoserine (plants) and 0-acyl-L-homoserine (microorganisms). Cystathionine is formed with L-cysteine as sulfur donor. It may be degraded to L-homocysteine, which, however, may also directly be formed with the participation of sulfide, a reaction resembling the formation of L-cysteine from 0-acetyl-L-serine (D 11). 5-Methyltetrahydrofolic acid acts as donor of the L-methionine methyl group (C 3.2). 

Bender, D. A. Amino Acid Metabolism. Wiley, London 1975 

Giovanelli, J., Mudd, S. H., Datko, A. H. Sulfur amino acids in plants. In The Biochemistry of Plants, Vol. 5, Amino Acids and Derivatives (B. J. Miflin, ed.), pp. 453 505. Academic Press, New York 1980 

1 Secondary Products Formed from S-Adenosyl-L-methionine 

S-Adenosyl-L-methionine ( activated methionine ) is a sulfonium compound, which possesses the reactive —group. 

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Secondary products formed from S-adenosyl-L-methionine (D 12.1) Secondary products originating from L-valine (D 13)... 

D 12.1 Secondary Products Formed from. S-Adenosyl-L-methionine 333... 

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