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pcm | L-isoaspartate protein carboxylmethyltransferase type II; 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; Belongs to the methyltransferase superfamily. L- isoaspartyl/D-aspartyl protein methyltransferase family. (208 aa) | ||||
rsmA | 16S rRNA m(6)A1518, m(6)A1519 dimethyltransferase, SAM-dependent; 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. (273 aa) | ||||
rsmH | 16S rRNA m(4)C1402 methyltransferase, SAM-dependent; Specifically methylates the N4 position of cytidine in position 1402 (C1402) of 16S rRNA. In vitro, active on the assembled 30S subunit, but not naked 16S rRNA or 70S ribosomes. (313 aa) | ||||
speE | Spermidine synthase (putrescine aminopropyltransferase); Involved in the biosynthesis of polyamines which play a significant role in the structural and functional organization in the chromoid of E.coli by compacting DNA and neutralizing negative charges. Catalyzes the irreversible transfer (ping-pong mechanism) of a propylamine group from the amino donor S-adenosylmethioninamine (decarboxy-AdoMet) to putrescine (1,4-diaminobutane) to yield spermidine. Cadaverine (1,5-diaminopentane) and spermidine can also be used as the propylamine acceptor. (288 aa) | ||||
yafE | Putative S-adenosyl-L-methionine-dependent methyltransferase; Putative biotin synthesis protein; Protein involved in biotin biosynthetic process; Belongs to the methyltransferase superfamily. (207 aa) | ||||
yafS | Putative S-adenosyl-L-methionine-dependent methyltransferase. (240 aa) | ||||
bioC | malonyl-ACP O-methyltransferase, SAM-dependent; Converts the free carboxyl group of a malonyl-thioester to its methyl ester by transfer of a methyl group from S-adenosyl-L- methionine (SAM). It allows to synthesize pimeloyl-ACP via the fatty acid synthetic pathway. E.coli employs a methylation and demethylation strategy to allow elongation of a temporarily disguised malonate moiety to a pimelate moiety by the fatty acid synthetic enzymes. (251 aa) | ||||
rlmF | 23S rRNA m(6)A1618 methyltransferase, SAM-dependent; Specifically methylates the adenine in position 1618 of 23S rRNA; Belongs to the methyltransferase superfamily. METTL16/RlmF family. (308 aa) | ||||
rlmC | 23S rRNA m(5)U747 methyltransferase, SAM-dependent; Catalyzes the formation of 5-methyl-uridine at position 747 (m5U747) in 23S rRNA; Belongs to the class I-like SAM-binding methyltransferase superfamily. RNA M5U methyltransferase family. RlmC subfamily. (375 aa) | ||||
smtA | Putative S-adenosyl-L-methionine-dependent methyltransferase; Catalyzes the methylation of 5-carboxymethoxyuridine (cmo5U) to form 5-methoxycarbonylmethoxyuridine (mcmo5U) at position 34 in tRNAs. Four tRNAs (tRNA(Ala1), tRNA(Ser1), tRNA(Pro3) and tRNA(Thr4)) are fully modified with mcmo5U in stationary-phase E.coli. Also present at low frequency in tRNA(Leu3) and tRNA(Val1). (261 aa) | ||||
rlmL | 23S rRNA m(2)G2445 and m(7)G2069 methyltransferases, SAM-dependent; Specifically methylates the guanine in position 2445 (m2G2445) and the guanine in position 2069 (m7G2069) of 23S rRNA. Methylation occurs before assembly of 23S rRNA into 50S subunits. Belongs to the methyltransferase superfamily. RlmKL family. (702 aa) | ||||
rlmI | 23S rRNA m(5)C1962 methyltransferase, SAM-dependent; Specifically methylates the cytosine at position 1962 (m5C1962) of 23S rRNA. Methylation occurs before assembly of 23S rRNA into 50S subunits; Belongs to the methyltransferase superfamily. RlmI family. (396 aa) | ||||
ymfD | E14 prophage; putative SAM-dependent methyltransferase. (221 aa) | ||||
prmC | RF-1 and RF-2 N5-glutamine methyltransferase; Methylates the class 1 translation termination release factors RF1/PrfA and RF2/PrfB on the glutamine residue of the universally conserved GGQ motif, i.e. on 'Gln-235' in RF1 and on 'Gln- 252' in RF2; Belongs to the protein N5-glutamine methyltransferase family. PrmC subfamily. (277 aa) | ||||
ynbC | Putative esterase. (585 aa) | ||||
tehB | Tellurite, selenium methyltransferase, SAM-dependent; S-adenosyl-L-methionine dependent methyltransferase that catalyzes the methylation of tellurite and is responsible for tellurite resistance when present in high copy number. Can also methylate selenite and selenium dioxide. Is thus able to detoxify different chalcogens. Cannot methylate arsenic compounds. Belongs to the TehB family. (197 aa) | ||||
tam | Trans-aconitate methyltransferase; Catalyzes the S-adenosylmethionine monomethyl esterification of trans-aconitate at high affinity and of cis-aconitate, isocitrate, and citrate at lower velocities and affinities; Belongs to the methyltransferase superfamily. Tam family. (252 aa) | ||||
cfa | Cyclopropane fatty acyl phospholipid synthase, SAM-dependent; 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. (382 aa) | ||||
rlmA | 23S rRNA m(1)G745 methyltransferase, SAM-dependent; Specifically methylates the guanosine in position 745 of 23S rRNA. (269 aa) | ||||
rsmF | 16S rRNA m(5)C1407 methyltransferase, SAM-dependent; Specifically methylates the cytosine at position 1407 (m5C1407) of 16S rRNA. (479 aa) | ||||
cmoA | carboxy-SAM synthase; Catalyzes the conversion of S-adenosyl-L-methionine (SAM) to carboxy-S-adenosyl-L-methionine (Cx-SAM); Belongs to the class I-like SAM-binding methyltransferase superfamily. Cx-SAM synthase family. (247 aa) | ||||
cmoB | tRNA (cmo5U34)-carboxymethyltransferase, carboxy-SAM-dependent; Catalyzes carboxymethyl transfer from carboxy-S-adenosyl-L- methionine (Cx-SAM) to 5-hydroxyuridine (ho5U) to form 5- carboxymethoxyuridine (cmo5U) at position 34 in tRNAs. Can also catalyze the SAM-dependent methylation of ho5U, with much lower efficiency. (323 aa) | ||||
cheR | Chemotaxis regulator, protein-glutamate methyltransferase; Methylation of the membrane-bound methyl-accepting chemotaxis proteins (MCP) to form gamma-glutamyl methyl ester residues in MCP. (286 aa) | ||||
dcm | DNA cytosine methyltransferase; This methylase recognizes the double-stranded sequence CCWGG, causes specific methylation on C-2 on both strands. (472 aa) | ||||
ubiG | Bifunctional 3-demethylubiquinone-9 3-methyltransferase/ 2-octaprenyl-6-hydroxy phenol methylase; O-methyltransferase that catalyzes the 2 O-methylation steps in the ubiquinone biosynthetic pathway. (240 aa) | ||||
mnmC | tRNA 5-methylaminomethyl-2-thiouridine biosynthesis bifunctional protein MnmC; Catalyzes the last two steps in the biosynthesis of 5- methylaminomethyl-2-thiouridine (mnm(5)s(2)U) at the wobble position (U34) in tRNA. Catalyzes the FAD-dependent demodification of cmnm(5)s(2)U34 to nm(5)s(2)U34, followed by the transfer of a methyl group from S-adenosyl-L-methionine to nm(5)s(2)U34, to form mnm(5)s(2)U34; In the N-terminal section; belongs to the methyltransferase superfamily. tRNA (mnm(5)s(2)U34)-methyltransferase family. (668 aa) | ||||
prmB | N5-glutamine methyltransferase; Specifically methylates the 50S ribosomal protein L3 on 'Gln- 150'. Does not methylate the translation termination release factors RF1 and RF2; Belongs to the protein N5-glutamine methyltransferase family. PrmB subfamily. (310 aa) | ||||
trmN | tRNA1(Val) (adenine(37)-N6)-methyltransferase; Specifically methylates the adenine in position 37 of tRNA(1)(Val) (anticodon cmo5UAC); Belongs to the methyltransferase superfamily. tRNA (adenine-N(6)-)-methyltransferase family. (245 aa) | ||||
ubiE | Ubiquinone/menaquinone biosynthesis C-methyltransferase UbiE; Methyltransferase required for the conversion of demethylmenaquinol (DMKH2) to menaquinol (MKH2) and the conversion of 2-polyprenyl-6-methoxy-1,4-benzoquinol (DDMQH2) to 2-polyprenyl-3- methyl-6-methoxy-1,4-benzoquinol (DMQH2). (251 aa) | ||||
trmA | tRNA m(5)U54 methyltransferase, SAM-dependent; Dual-specificity methyltransferase that catalyzes the formation of 5-methyluridine at position 54 (m5U54) in all tRNAs, and that of position 341 (m5U341) in tmRNA (transfer-mRNA). (366 aa) | ||||
yjhP | Uncharacterized protein YjhP; Pseudogene, zinc finger protein family. (248 aa) | ||||
hsdM | DNA methyltransferase M; The M and S subunits together form a methyltransferase (MTase) that methylates two adenine residues in complementary strands of a bipartite DNA recognition sequence. In the presence of the R subunit the complex can also act as an endonuclease, binding to the same target sequence but cutting the DNA some distance from this site. Whether the DNA is cut or modified depends on the methylation state of the target sequence. When the target site is unmodified, the DNA is cut. When the target site is hemimethylated, the complex acts as a maintenance MTase modifying the [...] (529 aa) | ||||
rsmC | 16S rRNA m(2)G1207 methyltransferase, SAM-dependent; Specifically methylates the guanine in position 1207 of 16S rRNA in the 30S particle. (343 aa) | ||||
rlmD | 23S rRNA m(5)U1939 methyltransferase, SAM-dependent; Catalyzes the formation of 5-methyl-uridine at position 1939 (m5U1939) in 23S rRNA; Belongs to the class I-like SAM-binding methyltransferase superfamily. RNA M5U methyltransferase family. RlmD subfamily. (433 aa) | ||||
rlmM | 23S rRNA C2498 2'-O-ribose methyltransferase, SAM-dependent; Catalyzes the 2'-O-methylation at nucleotide C2498 in 23S rRNA. Modifies C2498 in naked 23S rRNA, but not in assembled 50S subunits or ribosomes. (366 aa) | ||||
trmI | tRNA m(7)G46 methyltransferase, SAM-dependent; Catalyzes the formation of N(7)-methylguanine at position 46 (m7G46) in tRNA; Belongs to the class I-like SAM-binding methyltransferase superfamily. TrmB family. (239 aa) | ||||
rlmG | 23S rRNA m(2)G1835 methyltransferase, SAM-dependent; Specifically methylates the guanine in position 1835 (m2G1835) of 23S rRNA. (378 aa) | ||||
rlmE | 23S rRNA U2552 2'-O-ribose methyltransferase, SAM-dependent; Specifically methylates the uridine in position 2552 of 23S rRNA at the 2'-O position of the ribose in the fully assembled 50S ribosomal subunit. (209 aa) | ||||
prmA | Methyltransferase for 50S ribosomal subunit protein L11; Methylates ribosomal protein L11. (293 aa) | ||||
yhdJ | DNA adenine methyltransferase, SAM-dependent; Methylates the second adenine of the NsiI recognition sequence (5'-ATGCAT-3'). (294 aa) | ||||
rsmB | 16S rRNA m(5)C967 methyltransferase, SAM-dependent; Specifically methylates the cytosine at position 967 (m5C967) of 16S rRNA. (429 aa) | ||||
dam | DNA adenine methyltransferase; Methylates DNA within the sequence GATC and protects the DNA from cleavage by the restriction endonuclease MboI. Although it shares sequence specificity with a number of type II restriction endonucleases and methylases, it is thought to act in postreplication mismatch repair rather than as a part of a restriction modification system. May also play a role in DNA replication. (278 aa) | ||||
rsmD | 16S rRNA m(2)G966 methyltransferase, SAM-dependent; Specifically methylates the guanine in position 966 of 16S rRNA in the assembled 30S particle. (198 aa) | ||||
rsmJ | 16S rRNA m(2)G1516 methyltransferase, SAM-dependent; Specifically methylates the guanosine in position 1516 of 16S rRNA; Belongs to the methyltransferase superfamily. RsmJ family. (250 aa) | ||||
rlmJ | 23S rRNA m(6)A2030 methyltransferase, SAM-dependent; Specifically methylates the adenine in position 2030 of 23S rRNA. Nascent 23S rRNA seems to be the natural substrate. Appears to be not necessary for ribosome assembly. Required for the utilization of extracellular DNA as the sole source of carbon and energy. Belongs to the RlmJ family. (280 aa) | ||||
rsmG | 16S rRNA m(7)G527 methyltransferase, SAM-dependent; Specifically methylates the N7 position of guanine in position 527 of 16S rRNA. Requires the intact 30S subunit for methylation; Belongs to the methyltransferase superfamily. RNA methyltransferase RsmG family. (207 aa) |