S-adenosyl-L-methionine cycle I

Rezzonico F, Duffy B. Lack of genomic evidence of AI-2 receptors suggests a non-quorum sensing role for luxS in most bacteria. BMC Microbiol. 2008 Sep 20;8():154. PMID: 18803868; PMCID: PMC2561040.

Metabolites

Adenine

Formula: C5H5N5 (135.054493)

CAS ID: 73-24-5

Diphosphate

Formula: H4P2O7 (177.9432294)

CAS ID: 2466-09-3

Fe2+

Formula: Fe (55.934939)

CAS ID: 15438-31-0

H+

Formula: H (1.0078246)

CAS ID: 12408-02-5

H2O

Formula: H2O (18.0105642)

CAS ID: 7732-18-5

Magnesium cation

Formula: Mg (23.98505)

CAS ID: 22537-22-0

Potassium cation

Formula: K (38.963708)

CAS ID: 24203-36-9

ATP(4-)

Formula: C10H12N5O13P3 (502.9644492)

CAS ID:



Enzyme

EC Number name full name note
2.1.1.14 5-methyltetrahydropteroyltriglutamate-homocysteine S-methyltransferase 5-methyltetrahydropteroyltri-L-glutamate:L-homocysteine S-methyltransferase
2.5.1.6 methionine adenosyltransferase ATP:L-methionine S-adenosyltransferase
3.2.2.9 adenosylhomocysteine nucleosidase S-adenosyl-L-homocysteine homocysteinylribohydrolase
4.4.1.21 S-ribosylhomocysteine lyase S-(5-deoxy-D-ribos-5-yl)-L-homocysteine L-homocysteine-lyase [(4S)-4,5-dihydroxypentan-2,3-dione-forming]


Proteins

Protein ID name full name
O32028 mtnN 5'-methylthioadenosine/S-adenosylhomocysteine nucleosidase
O34667 luxS S-ribosylhomocysteine lyase
P54419 metK S-adenosylmethionine synthase
P80877 metE 5-methyltetrahydropteroyltriglutamate--homocysteine methyltransferase