ID   2.1.1.113
DE   Site-specific DNA-methyltransferase (cytosine-N(4)-specific).
AN   Modification methylase.
AN   N(4)-cytosine-specific DNA methylase.
AN   Restriction-modification system.
CA   S-adenosyl-L-methionine + DNA cytosine = S-adenosyl-L-homocysteine +
CA   DNA N(4)-methylcytosine.
CC   -!- This is a large group of enzymes, the majority of which, with enzymes
CC       of similar site specificity listed as EC 3.1.21.3, EC 3.1.21.4 and
CC       EC 3.1.21.5, form so-called restriction-modification systems.
CC   -!- See the REBASE database for a complete list of these enzymes:
CC       http://rebase.neb.com/rebase/
PR   PROSITE; PDOC00088;
DR   P0A462, MTA1_ANAVA ;  P0A461, MTA1_NOSS1 ;  P23941, MTB1_BACAM ;
DR   Q9LAI2, MTB1_BACSQ ;  O68556, MTB1_BACSU ;  P70986, MTB1_GEOSE ;
DR   P18051, MTB2_BACAM ;  Q45489, MTB2_BACSU ;  Q04845, MTC1_CITFR ;
DR   P14243, MTC9_CITFR ;  P29568, MTHZ_METTF ;  Q58392, MTM1_METJA ;
DR   Q58843, MTM2_METJA ;  Q58893, MTM5_METJA ;  Q58606, MTM6_METJA ;
DR   P14244, MTMV_MICVA ;  O59647, MTMW_METWO ;  P11409, MTP2_PROHU ;
DR   O52692, MTS1_STRCS ;  O52513, MTS1_STRFI ;  P14230, MTSM_SERMA ;
DR   P30774, MTX1_XANCC ;
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