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N Use By Plants
Nitrate Assimilation
Ammonia Assimilation
Glu, Gln, Asn, Gly, Ser
Aminotransferases
Asp, Ala, GABA
Val, Leu, Ileu, Thr, Lys
Pro, Arg, Orn
Polyamines
Non-protein AAs
Alkaloids
Sulfate Assimilation
Cys, Met, AdoMet, ACC
His, Phe, Tyr, Tryp
Secondary Products
Onium Compounds
Enzymes
Methods
Simulation
References
HORT640 - Metabolic Plant Physiology

Sulfate uptake and assimilation

S-Methylmethionine (SMM)

AdoMet: methionine S-methyltransferase [EC 2.1.1.12]

AdoMet (SAM) + methionine ---> S-methylmethionine (SMM) + AdoHcy

S-Methyl-L-methionine: homocysteine S-methyltransferase [EC 2.1.1.10]

S-methylmethionine (SMM) + homocysteine ---> 2 methionine + H+

S-Methyl-L-methionine hydrolase [EC 3.3.1.2]

S-methylmethionine (SMM) + H2O ---> (CH3)2S + homoserine + H+

(from: Giovanelli et al, 1980)

References

Giovanelli J, Mudd SH, Datko AH 1980 Sulfur amino acids in plants. In (BJ Miflin ed) "The Biochemistry of Plants", Vol 5, Academic Press, New York, pp. 453-505.

| Methionine adenosyltransferase (SAM synthetase) (ExPASy) [EC 2.5.1.6] | Methionine S-methyltransferase (ExPASy) [EC 2.1.1.12] | Homocysteine S-methyltransferase (ExPASy) [EC 2.1.1.10] | SMM hydrolase (ExPASy) [EC 3.3.1.2] | Arabidopsis thaliana Pathways (TAIR) | PubMed Search | Entrez Protein Search | ISI Web of Knowledge Search | Scirus Search |

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David Rhodes
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Last Update: 03/31/08