| site-specific DNA methyltransferase (cytosine-specific) | <enzyme> An enzyme responsible for producing a species-characteristic methylation pattern on cytosine residues in a specific short base sequence in the host cell's DNA. The enzyme catalyses the methylation of DNA cytosine in the presence of s-adenosyl-l-methionine to form s-adenosyl-l-homocysteine and DNA containing 5-methylcytosine. Registry number: EC 2.1.1.73 (12 Dec 1998) |
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| PspPI DNA methyltransferase | <enzyme> Methylates first cytosine in ggncc Registry number: EC 2.1.1.- Synonym: psppi methyltransferase, mtase (psppi), psppim gene product (26 Jun 1999) |
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| site-specific DNA-methyltransferase (adenine-specific) | <enzyme> An enzyme responsible for producing a species-characteristic methylation pattern on adenine residues in a specific short base sequence in the host cell DNA. The enzyme catalyses the methylation of DNA adenine in the presence of s-adenosyl-l-methionine to form DNA containing 6-methylaminopurine and s-adenosyl-l-homocysteine. Registry number: EC 2.1.1.72 (12 Dec 1998) |
| DNA (cytosine-5-)-methyltransferase | <enzyme> An enzyme that catalyses the transfer of a methyl group from s-adenosylmethionine to the 5-position of cytosine or to the 6-position in adenine in mammalian DNA. Chemical name: S-Adenosyl-L-methionine:DNA (cytosine-5-)-methyltransferase Registry number: EC 2.1.1.37 (12 Dec 1998) |
| O(4)-methylthymine-DNA methyltransferase | <enzyme> Repairs o(4)-methylthymidine residues in DNA Registry number: EC 2.1.1.- Synonym: mth-DNA methyltransferase (26 Jun 1999) |
| o(6)-methylguanine-DNA methyltransferase | <enzyme> An enzyme that transfers methyl groups from o(6)-methylguanine, and other methylated moities of DNA, to a cysteine residue in itself, thus repairing alkylated DNA in a single-step reaction. Chemical name: DNA-6-O-methylguanine:protein-L-cysteine S-methyltransferase Registry number: EC 2.1.1.63 (12 Dec 1998) |
| DNA-directed DNA polymerase | <enzyme> DNA-dependent DNA polymerases found in bacteria, animal and plant cells. During the replication process, these enzymes catalyze the addition of deoxyribonucleotide residues to the end of a DNA strand in the presence of DNA as template-primer. They also possess exonuclease activity and therefore function in DNA repair. Chemical name: Deoxynucleoside-triphosphate:DNA deoxynucleotidyltransferase (DNA-directed) Registry number: EC 2.7.7.7 (12 Dec 1998) |
| acetylserotonin n-methyltransferase | <enzyme> An enzyme that catalyses the transfer of a methyl group from s-adenosylmethionine to n-acetylserotonin to form n-acetyl-5-methoxytryptamine (melatonin). Chemical name: S-Adenosyl-L-methionine:N-acetylserotonin O-methyltransferase Registry number: EC 2.1.1.4 (12 Dec 1998) |
| aklanonic acid methyltransferase | <enzyme> Catalyses the methyl esterification of aklanonic acid; involved in daunomycin biosynthesis; genbank l35154; see also daunorubicin-doxorubicin polyketide synthase Registry number: EC 2.1.1.- Synonym: dauc protein, dauc gene product, aamtase, dnrc protein, dnrc gene product (26 Jun 1999) |
| avermectin B2 O-methyltransferase | <enzyme> Converts avermectin b component to avermectin a components during avermectin biosynthesis Registry number: EC 2.1.1.- (26 Jun 1999) |
| azaheterocycle N-methyltransferase | <enzyme> Catalyses the n-methylation of nicotine to n-methylnicotinium Registry number: EC 2.1.1.- Synonym: azh-n-methyltransferase, nicotine n-methyltransferase (26 Jun 1999) |
| BalI methyltransferase | <enzyme> Recognises 5'-tggcca-3' and methylates first c to produce c(5)-methylcytosine Registry number: EC 2.1.1.- Synonym: methyltransferase bali, DNA methyltransferase bali (26 Jun 1999) |
| BcgI methyltransferase | <enzyme> From bacillus coagulans; an m(6)a-methyltransferase which produces n-6 methyladenine as the sole product of bcgi methylation Registry number: EC 2.1.1.- Synonym: bcgi methylase (26 Jun 1999) |
| beta-carboline-2-N-methyltransferase | <enzyme> Brain enzyme may have a role in development of idiopathic parkinson disease by forming n-methylated beta-carbolinium cations Registry number: EC 2.1.1.- Synonym: betac-2-nmt (26 Jun 1999) |
| Bsp6I methyltransferase | <enzyme> From plasmid-borne gene bsp6i of bacillus; 315 amino acids, mw 36.3 kD; genbank x81638 Registry number: EC 2.1.1- Synonym: bsp6i mtase, bsp6im gene product, bsp6i methylase, m.bsp6i (26 Jun 1999) |
| BSSHII methyltransferase | <enzyme> A multispecific methyltransferase recognizing five different targets from bacillus; amino acid sequence has been determined Registry number: EC 2.1.1.- Synonym: bsshii mtase, m.bsshii (26 Jun 1999) |