S-Adenosylmethionine (ECMDB01185) (M2MDB000289)
Enzymes
- General function:
- Coenzyme transport and metabolism
- Specific function:
- S-adenosyl-L-methionine + uroporphyrinogen III = S-adenosyl-L-homocysteine + precorrin-1
- Gene Name:
- hemX
- Uniprot ID:
- P09127
- Molecular weight:
- 42963
Reactions
S-adenosyl-L-methionine + uroporphyrinogen III = S-adenosyl-L-homocysteine + precorrin-1. |
S-adenosyl-L-methionine + precorrin-1 = S-adenosyl-L-homocysteine + precorrin-2. |
- General function:
- Involved in protein-L-isoaspartate (D-aspartate) O-methyltransferase activity
- Specific function:
- Catalyzes the methyl esterification of L-isoaspartyl residues in peptides and proteins that result from spontaneous decomposition of normal L-aspartyl and L-asparaginyl residues. It plays a role in the repair and/or degradation of damaged proteins. This enzyme does not act on D-aspartyl residues
- Gene Name:
- pcm
- Uniprot ID:
- P0A7A5
- Molecular weight:
- 23258
Reactions
S-adenosyl-L-methionine + protein L-isoaspartate = S-adenosyl-L-homocysteine + protein L-isoaspartate alpha-methyl ester. |
- General function:
- Involved in adenosylmethionine decarboxylase activity
- Specific function:
- Catalyzes the decarboxylation of S-adenosylmethionine to S-adenosylmethioninamine (dcAdoMet), the propylamine donor required for the synthesis of the polyamines spermine and spermidine from the diamine putrescine
- Gene Name:
- speD
- Uniprot ID:
- P0A7F6
- Molecular weight:
- 30384
Reactions
S-adenosyl-L-methionine = (5-deoxy-5-adenosyl)(3-aminopropyl)-methylsulfonium salt + CO(2). |
- General function:
- Involved in methionine adenosyltransferase activity
- Specific function:
- Catalyzes the formation of S-adenosylmethionine from methionine and ATP. The overall synthetic reaction is composed of two sequential steps, AdoMet formation and the subsequent tripolyphosphate hydrolysis which occurs prior to release of AdoMet from the enzyme. Is essential for growth
- Gene Name:
- metK
- Uniprot ID:
- P0A817
- Molecular weight:
- 41951
Reactions
ATP + L-methionine + H(2)O = phosphate + diphosphate + S-adenosyl-L-methionine. |
- General function:
- Involved in RNA binding
- Specific function:
- Specifically methylates guanosine-37 in various tRNAs
- Gene Name:
- trmD
- Uniprot ID:
- P0A873
- Molecular weight:
- 28422
Reactions
S-adenosyl-L-methionine + guanine(37) in tRNA = S-adenosyl-L-homocysteine + N(1)-methylguanine(37) in tRNA. |
- General function:
- Involved in lipid biosynthetic process
- Specific function:
- Transfers a methylene group from S-adenosyl-L-methionine to the cis double bond of an unsaturated fatty acid chain resulting in the replacement of the double bond with a methylene bridge
- Gene Name:
- cfa
- Uniprot ID:
- P0A9H7
- Molecular weight:
- 43909
Reactions
S-adenosyl-L-methionine + phospholipid olefinic fatty acid = S-adenosyl-L-homocysteine + phospholipid cyclopropane fatty acid. |
- General function:
- Involved in catalytic activity
- Specific function:
- Activation of pyruvate formate-lyase 1 under anaerobic conditions by generation of an organic free radical, using S- adenosylmethionine and reduced flavodoxin as cosubstrates to produce 5'-deoxy-adenosine
- Gene Name:
- pflA
- Uniprot ID:
- P0A9N4
- Molecular weight:
- 28204
Reactions
S-adenosyl-L-methionine + dihydroflavodoxin + [formate C-acetyltransferase]-glycine = 5'-deoxyadenosine + L-methionine + flavodoxin semiquinone + [formate C-acetyltransferase]-glycin-2-yl radical. |
- General function:
- Involved in [formate-C-acetyltransferase]-activating enzyme activity
- Specific function:
- Activation of anaerobic ribonucleoside-triphosphate reductase under anaerobic conditions by generation of an organic free radical, using S-adenosylmethionine and reduced flavodoxin as cosubstrates to produce 5'-deoxy-adenosine
- Gene Name:
- nrdG
- Uniprot ID:
- P0A9N8
- Molecular weight:
- 17446
- General function:
- Involved in nucleic acid binding
- Specific function:
- Specifically methylates the guanosine in position 966 of 16S rRNA in the assembled 30S particle
- Gene Name:
- rsmD
- Uniprot ID:
- P0ADX9
- Molecular weight:
- 21677
Reactions
S-adenosyl-L-methionine + guanosine(966) in 16S rRNA = S-adenosyl-L-homocysteine + N(2)-methylguanosine(966) in 16S rRNA. |
- General function:
- Involved in methyltransferase activity
- Specific function:
- Multifunctional enzyme that catalyzes the SAM-dependent methylation of uroporphyrinogen III at position C-2 and C-7 to form precorrin-2 and then position C-12 or C-18 to form trimethylpyrrocorphin 2. It also catalyzes the conversion of precorrin-2 into siroheme. This reaction consists of the NAD- dependent oxidation of precorrin-2 into sirohydrochlorin and its subsequent ferrochelation into siroheme
- Gene Name:
- cysG
- Uniprot ID:
- P0AEA8
- Molecular weight:
- 49951
Reactions
S-adenosyl-L-methionine + uroporphyrinogen III = S-adenosyl-L-homocysteine + precorrin-1. |
S-adenosyl-L-methionine + precorrin-1 = S-adenosyl-L-homocysteine + precorrin-2. |
Precorrin-2 + NAD(+) = sirohydrochlorin + NADH. |
Siroheme + 2 H(+) = sirohydrochlorin + Fe(2+). |
- General function:
- Involved in DNA binding
- Specific function:
- This methylase recognizes the double-stranded sequence CCWGG, causes specific methylation on C-2 on both strands
- Gene Name:
- dcm
- Uniprot ID:
- P0AED9
- Molecular weight:
- 53464
Reactions
S-adenosyl-L-methionine + DNA = S-adenosyl-L-homocysteine + DNA containing 5-methylcytosine. |
- General function:
- Involved in transaminase activity
- Specific function:
- Catalyzes the transfer of the alpha-amino group from S- adenosyl-L-methionine (SAM) to 7-keto-8-aminopelargonic acid (KAPA) to form 7,8-diaminopelargonic acid (DAPA). It is the only animotransferase known to utilize SAM as an amino donor
- Gene Name:
- bioA
- Uniprot ID:
- P12995
- Molecular weight:
- 47335
Reactions
S-adenosyl-L-methionine + 8-amino-7-oxononanoate = S-adenosyl-4-methylthio-2-oxobutanoate + 7,8-diaminononanoate. |
- General function:
- Involved in catalytic activity
- Specific function:
- Catalyzes the conversion of dethiobiotin (DTB) to biotin by the insertion of a sulfur atom into dethiobiotin via a radical- based mechanism
- Gene Name:
- bioB
- Uniprot ID:
- P12996
- Molecular weight:
- 38648
Reactions
Dethiobiotin + sulfur + 2 S-adenosyl-L-methionine = biotin + 2 L-methionine + 2 5'-deoxyadenosine. |
- General function:
- Involved in 2-polyprenyl-6-methoxy-1,4-benzoquinone methyltransferase activity
- Specific function:
- S-adenosyl-L-methionine + 3- demethylubiquinone-9 = S-adenosyl-L-homocysteine + ubiquinone-9
- Gene Name:
- ubiG
- Uniprot ID:
- P17993
- Molecular weight:
- 26555
Reactions
S-adenosyl-L-methionine + 3-demethylubiquinone-n = S-adenosyl-L-homocysteine + ubiquinone-n. |
S-adenosyl-L-methionine + 3-(all-trans-polyprenyl)benzene-1,2-diol = S-adenosyl-L-homocysteine + 2-methoxy-6-(all-trans-polyprenyl)phenol. |
- General function:
- Involved in coproporphyrinogen oxidase activity
- Specific function:
- Anaerobic transformation of coproporphyrinogen-III into protoporphyrinogen-IX
- Gene Name:
- hemN
- Uniprot ID:
- P32131
- Molecular weight:
- 52729
Reactions
Coproporphyrinogen-III + 2 S-adenosyl-L-methionine = protoporphyrinogen-IX + 2 CO(2) + 2 L-methionine + 2 5'-deoxyadenosine. |
- General function:
- Involved in iron-sulfur cluster binding
- Specific function:
- Activation of pyruvate formate-lyase 2 under anaerobic conditions by generation of an organic free radical, using S- adenosylmethionine and reduced flavodoxin as cosubstrates to produce 5'-deoxy-adenosine
- Gene Name:
- pflC
- Uniprot ID:
- P32675
- Molecular weight:
- 32429
Reactions
S-adenosyl-L-methionine + dihydroflavodoxin + [formate C-acetyltransferase]-glycine = 5'-deoxyadenosine + L-methionine + flavodoxin semiquinone + [formate C-acetyltransferase]-glycin-2-yl radical. |
- General function:
- Involved in methyltransferase activity
- Specific function:
- Specifically methylates the guanosine in position 745 of 23S rRNA
- Gene Name:
- rlmA
- Uniprot ID:
- P36999
- Molecular weight:
- 30419
Reactions
S-adenosyl-L-methionine + guanine(745) in 23S rRNA = S-adenosyl-L-homocysteine + N(1)-methylguanine(745) in 23S rRNA. |
- General function:
- Involved in nucleic acid binding
- Specific function:
- S-adenosyl-L-methionine + DNA adenine = S- adenosyl-L-homocysteine + DNA 6-methylaminopurine
- Gene Name:
- yfcB
- Uniprot ID:
- P39199
- Molecular weight:
- 35001
Reactions
S-adenosyl-L-methionine + glutamine in ribosomal protein L3 = S-adenosyl-L-homocysteine + N5-methylglutamine in ribosomal protein L3. |
- General function:
- Involved in nucleic acid binding
- Specific function:
- Specifically methylates the guanosine in position 1207 of 16S rRNA in the 30S particle
- Gene Name:
- rsmC
- Uniprot ID:
- P39406
- Molecular weight:
- 37624
Reactions
S-adenosyl-L-methionine + guanosine(1207) in 16S rRNA = S-adenosyl-L-homocysteine + N(2)-methylguanosine(1207) in 16S rRNA. |
- General function:
- Involved in nucleic acid binding
- Specific function:
- Specifically methylates the guanosine in position 1835 (m2G1835) of 23S rRNA
- Gene Name:
- rlmG
- Uniprot ID:
- P42596
- Molecular weight:
- 42331
Reactions
S-adenosyl-L-methionine + guanosine(1835) in 23S rRNA = S-adenosyl-L-homocysteine + N(2)-methylguanosine(1835) in 23S rRNA. |
- General function:
- Involved in coproporphyrinogen oxidase activity
- Specific function:
- Not Available
- Gene Name:
- yggW
- Uniprot ID:
- P52062
- Molecular weight:
- 42584
- General function:
- Involved in catalytic activity
- Specific function:
- Catalyzes the radical-mediated insertion of two sulfur atoms into the C-6 and C-8 positions of the octanoyl moiety bound to the lipoyl domains of lipoate-dependent enzymes, thereby converting the octanoylated domains into lipoylated derivatives. Free octanoate is not a substrate for lipA
- Gene Name:
- lipA
- Uniprot ID:
- P60716
- Molecular weight:
- 36071
Reactions
Protein N(6)-(octanoyl)lysine + 2 sulfur + 2 S-adenosyl-L-methionine = protein N(6)-(lipoyl)lysine + 2 L-methionine + 2 5'-deoxyadenosine. |
- General function:
- Involved in rRNA (adenine-N6-)-methyltransferase activity
- Specific function:
- Specifically methylates the adenine in position 1618 of 23S rRNA
- Gene Name:
- rlmF
- Uniprot ID:
- P75782
- Molecular weight:
- 34226
Reactions
S-adenosyl-L-methionine + adenine(1618) in 23S rRNA = S-adenosyl-L-homocysteine + rRNA containing N(6)-methyladenine(1618) in 23S rRNA. |
- General function:
- Involved in oxidoreductase activity
- Specific function:
- Activation of pyruvate formate-lyase 2 under anaerobic conditions by generation of an organic free radical, using S- adenosylmethionine and reduced flavodoxin as cosubstrates to produce 5'-deoxy-adenosine
- Gene Name:
- ybiY
- Uniprot ID:
- P75794
- Molecular weight:
- 33038
Reactions
S-adenosyl-L-methionine + dihydroflavodoxin + [formate C-acetyltransferase]-glycine = 5'-deoxyadenosine + L-methionine + flavodoxin semiquinone + [formate C-acetyltransferase]-glycin-2-yl radical. |
- General function:
- Involved in trans-aconitate 2-methyltransferase activity
- Specific function:
- Catalyzes the S-adenosylmethionine monomethyl esterification of trans-aconitate at high affinity and of cis- aconitate, isocitrate, and citrate at lower velocities and affinities
- Gene Name:
- tam
- Uniprot ID:
- P76145
- Molecular weight:
- 29006
Reactions
S-adenosyl-L-methionine + trans-aconitate = S-adenosyl-L-homocysteine + (E)-3-(methoxycarbonyl)pent-2-enedioate. |
- General function:
- Involved in homocysteine S-methyltransferase activity
- Specific function:
- Catalyzes methyl transfer from S-methylmethionine or S- adenosylmethionine (less efficient) to homocysteine, selenohomocysteine and less efficiently selenocysteine
- Gene Name:
- mmuM
- Uniprot ID:
- Q47690
- Molecular weight:
- 33422
Reactions
S-methyl-L-methionine + L-homocysteine = 2 L-methionine. |
- General function:
- Involved in catalytic activity
- Specific function:
- Catalyzes the rearrangement of 1-deoxy-D-xylulose 5- phosphate (DXP) to produce the thiazole phosphate moiety of thiamine. Sulfur is provided by the thiocarboxylate moiety of the carrier protein ThiS. In vitro, sulfur can be provided by H(2)S
- Gene Name:
- thiG
- Uniprot ID:
- P30139
- Molecular weight:
- 26896
Reactions
1-deoxy-D-xylulose 5-phosphate + 2-iminoacetate + thiocarboxy-adenylate-[sulfur-carrier protein ThiS] = 2-((2R,5Z)-2-carboxy-4-methylthiazol-5(2H)-ylidene)ethyl phosphate + [sulfur-carrier protein ThiS] + 2 H(2)O. |
- General function:
- Involved in catalytic activity
- Specific function:
- Catalyzes the radical-mediated cleavage of tyrosine to dehydroglycine and p-cresol
- Gene Name:
- thiH
- Uniprot ID:
- P30140
- Molecular weight:
- 43320
Reactions
L-tyrosine + S-adenosyl-L-methionine + reduced acceptor = 2-iminoacetate + 4-methylphenol + 5'-deoxyadenosine + L-methionine + acceptor + 2 H(+). |
- General function:
- Involved in thiamine biosynthetic process
- Specific function:
- Catalyzes the synthesis of the hydroxymethylpyrimidine phosphate (HMP-P) moiety of thiamine from aminoimidazole ribotide (AIR) in a radical S-adenosyl-L-methionine (SAM)-dependent reaction
- Gene Name:
- thiC
- Uniprot ID:
- P30136
- Molecular weight:
- 70850
Reactions
5-amino-1-(5-phospho-D-ribosyl)imidazole + S-adenosyl-L-methionine = 4-amino-2-methyl-5-phosphomethylpyrimidine + 5'-deoxyadenosine + L-methionine + formate + CO. |
- General function:
- Involved in methyltransferase activity
- Specific function:
- Methyltransferase required for the conversion of dimethylmenaquinone (DMKH2) to menaquinone (MKH2) and the conversion of 2-polyprenyl-6-methoxy-1,4-benzoquinol (DDMQH2) to 2-polyprenyl-3-methyl-6-methoxy-1,4-benzoquinol (DMQH2)
- Gene Name:
- ubiE
- Uniprot ID:
- P0A887
- Molecular weight:
- 28073
Reactions
A demethylmenaquinone + S-adenosyl-L-methionine = a menaquinol + S-adenosyl-L-homocysteine. |
S-adenosyl-L-methionine + 2-methoxy-6-all-trans-polyprenyl-1,4-benzoquinol = S-adenosyl-L-homocysteine + 6-methoxy-3-methyl-2-all-trans-polyprenyl-1,4-benzoquinol. |
- General function:
- Involved in biotin biosynthetic process
- Specific function:
- BioC is involved in an early, but chemically unexplored, step in the conversion of pimelic acid to biotin
- Gene Name:
- bioC
- Uniprot ID:
- P12999
- Molecular weight:
- 28276
Reactions
S-adenosyl-L-methionine + malonyl-CoA = S-adenosyl-L-homocysteine + malonyl-CoA methyl ester. |
- General function:
- Not Available
- Specific function:
- Not Available
- Gene Name:
- rlmL
- Uniprot ID:
- P75864
- Molecular weight:
- Not Available
- General function:
- Translation, ribosomal structure and biogenesis
- Specific function:
- Methylates the translation termination release factor RF1/PrfA on 'Gln-235' and RF2/PrfB on 'Gln-252'
- Gene Name:
- hemK
- Uniprot ID:
- P0ACC1
- Molecular weight:
- 30975
Reactions
S-adenosyl-L-methionine + glutamine in release factor = S-adenosyl-L-homocysteine + N5-methylglutamine in release factor. |
- General function:
- Translation, ribosomal structure and biogenesis
- Specific function:
- Specifically dimethylates two adjacent adenosines (A1518 and A1519) in the loop of a conserved hairpin near the 3'-end of 16S rRNA in the 30S particle. May play a critical role in biogenesis of 30S subunits. Has also a DNA glycosylase/AP lyase activity that removes C mispaired with oxidized T from DNA, and may play a role in protection of DNA against oxidative stress
- Gene Name:
- rsmA
- Uniprot ID:
- P06992
- Molecular weight:
- 30420
Reactions
4 S-adenosyl-L-methionine + adenine(1518)/adenine(1519) in 16S rRNA = 4 S-adenosyl-L-homocysteine + N(6)-dimethyladenine(1518)/N(6)-dimethyladenine(1519) in 16S rRNA. |
- General function:
- tRNA methylthiolation
- Specific function:
- Catalyzes the methylthiolation of N6-(dimethylallyl)adenosine (i(6)A), leading to the formation of 2-methylthio-N6-(dimethylallyl)adenosine (ms(2)i(6)A) at position 37 in tRNAs that read codons beginning with uridine.
- Gene Name:
- miaB
- Uniprot ID:
- P0AEI1
- Molecular weight:
- 53662
Reactions
N(6)-dimethylallyladenine(37) in tRNA + sulfur-(sulfur carrier) + 2 S-adenosyl-L-methionine = 2-methylthio-N(6)-dimethylallyladenine(37) in tRNA + S-adenosyl-L-homocysteine + (sulfur carrier) + L-methionine + 5'-deoxyadenosine |
- General function:
- RNA modification
- Specific function:
- Catalyzes the methylthiolation of the residue Asp-89 of ribosomal protein S12.
- Gene Name:
- rimO
- Uniprot ID:
- P0AEI4
- Molecular weight:
- 49581
Reactions
L-aspartate-[ribosomal protein S12] + sulfur-(sulfur carrier) + 2 S-adenosyl-L-methionine = 3-methylthio-L-aspartate-[ribosomal protein S12] + S-adenosyl-L-homocysteine + (sulfur carrier) + L-methionine + 5'-deoxyadenosine |