ID   MTF1_FUSNU              Reviewed;         344 AA.
AC   P34906;
DT   01-FEB-1994, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1994, sequence version 1.
DT   03-AUG-2022, entry version 77.
DE   RecName: Full=Type II methyltransferase M.FnuDI {ECO:0000303|PubMed:12654995};
DE            Short=M.FnuDI {ECO:0000303|PubMed:12654995};
DE            EC=2.1.1.37;
DE   AltName: Full=Cytosine-specific methyltransferase FnuDI;
DE   AltName: Full=Modification methylase FnuDI;
GN   Name=fnuDIM;
OS   Fusobacterium nucleatum.
OC   Bacteria; Fusobacteria; Fusobacteriales; Fusobacteriaceae; Fusobacterium.
OX   NCBI_TaxID=851;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=D;
RA   Zhang B.-H., Wilson G.G.;
RT   "Method for producing the FnuDI restriction endonuclease and methylase.";
RL   Patent number US4988620, 29-JAN-1991.
RN   [2]
RP   NOMENCLATURE.
RX   PubMed=12654995; DOI=10.1093/nar/gkg274;
RA   Roberts R.J., Belfort M., Bestor T., Bhagwat A.S., Bickle T.A.,
RA   Bitinaite J., Blumenthal R.M., Degtyarev S.K., Dryden D.T., Dybvig K.,
RA   Firman K., Gromova E.S., Gumport R.I., Halford S.E., Hattman S.,
RA   Heitman J., Hornby D.P., Janulaitis A., Jeltsch A., Josephsen J., Kiss A.,
RA   Klaenhammer T.R., Kobayashi I., Kong H., Krueger D.H., Lacks S.,
RA   Marinus M.G., Miyahara M., Morgan R.D., Murray N.E., Nagaraja V.,
RA   Piekarowicz A., Pingoud A., Raleigh E., Rao D.N., Reich N., Repin V.E.,
RA   Selker E.U., Shaw P.C., Stein D.C., Stoddard B.L., Szybalski W.,
RA   Trautner T.A., Van Etten J.L., Vitor J.M., Wilson G.G., Xu S.Y.;
RT   "A nomenclature for restriction enzymes, DNA methyltransferases, homing
RT   endonucleases and their genes.";
RL   Nucleic Acids Res. 31:1805-1812(2003).
CC   -!- FUNCTION: A methylase, recognizes the double-stranded sequence 5'-GGCC-
CC       3', methylates C-? on both strands, and protects the DNA from cleavage
CC       by the FnuDI endonuclease. {ECO:0000303|PubMed:12654995}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a 2'-deoxycytidine in DNA + S-adenosyl-L-methionine = a 5-
CC         methyl-2'-deoxycytidine in DNA + H(+) + S-adenosyl-L-homocysteine;
CC         Xref=Rhea:RHEA:13681, Rhea:RHEA-COMP:11369, Rhea:RHEA-COMP:11370,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789,
CC         ChEBI:CHEBI:85452, ChEBI:CHEBI:85454; EC=2.1.1.37;
CC         Evidence={ECO:0000255|PROSITE-ProRule:PRU10018};
CC   -!- SIMILARITY: Belongs to the class I-like SAM-binding methyltransferase
CC       superfamily. C5-methyltransferase family. {ECO:0000255|PROSITE-
CC       ProRule:PRU01016}.
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DR   EMBL; AF051374; AAC05695.1; -; Genomic_DNA.
DR   AlphaFoldDB; P34906; -.
DR   SMR; P34906; -.
DR   REBASE; 3402; M.FnuDI.
DR   PRO; PR:P34906; -.
DR   GO; GO:0003886; F:DNA (cytosine-5-)-methyltransferase activity; IEA:UniProtKB-EC.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0009307; P:DNA restriction-modification system; IEA:UniProtKB-KW.
DR   Gene3D; 3.40.50.150; -; 1.
DR   InterPro; IPR018117; C5_DNA_meth_AS.
DR   InterPro; IPR001525; C5_MeTfrase.
DR   InterPro; IPR031303; C5_meth_CS.
DR   InterPro; IPR029063; SAM-dependent_MTases_sf.
DR   Pfam; PF00145; DNA_methylase; 1.
DR   PRINTS; PR00105; C5METTRFRASE.
DR   SUPFAM; SSF53335; SSF53335; 1.
DR   TIGRFAMs; TIGR00675; dcm; 1.
DR   PROSITE; PS00094; C5_MTASE_1; 1.
DR   PROSITE; PS00095; C5_MTASE_2; 1.
DR   PROSITE; PS51679; SAM_MT_C5; 1.
PE   3: Inferred from homology;
KW   DNA-binding; Methyltransferase; Restriction system;
KW   S-adenosyl-L-methionine; Transferase.
FT   CHAIN           1..344
FT                   /note="Type II methyltransferase M.FnuDI"
FT                   /id="PRO_0000087876"
FT   DOMAIN          1..330
FT                   /note="SAM-dependent MTase C5-type"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01016"
FT   ACT_SITE        71
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01016,
FT                   ECO:0000255|PROSITE-ProRule:PRU10018"
SQ   SEQUENCE   344 AA;  39913 MW;  7B0CB6C9721FE91C CRC64;
     MKLLSLFSGA GGLDLGFERA GFEIIVANEY DKTIWETYEK NHKAKLIKKD IREILSEELP
     KSDGIIGGPP CQSWSEAGSL RGINDPRGKL FYEYIRILKD IQPKFFLAEN VKGMLSKRNT
     EAVKDIIKEF EEAGYNVFIK LLNAFDYGVA QDRERVFYVG FRKDLNISNF EFPYPISEKE
     RKYLKDSIWD LKDNALPGKD KNKTNADDCI VENHEYLTGS YSTIFMSRNR VRQWEQPAFT
     VQASGRQCQL HPQAPTMIKI DKNMYKFVAG KENLYRRLSI RECARIQGFP DTFKFYYTSL
     EDGYKMVGNA VPVDLAYIIA KRIKETLTDK EKIKKEIRQK TLFD