ID   MUG_SERMA               Reviewed;         162 AA.
AC   P43343;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1995, sequence version 1.
DT   25-MAY-2022, entry version 88.
DE   RecName: Full=G/U mismatch-specific DNA glycosylase {ECO:0000255|HAMAP-Rule:MF_01956};
DE            EC=3.2.2.28 {ECO:0000255|HAMAP-Rule:MF_01956};
DE   AltName: Full=Double-strand-specific uracil glycosylase {ECO:0000255|HAMAP-Rule:MF_01956};
DE   AltName: Full=Mismatch-specific uracil DNA-glycosylase {ECO:0000255|HAMAP-Rule:MF_01956};
DE            Short=MUG {ECO:0000255|HAMAP-Rule:MF_01956};
GN   Name=mug {ECO:0000255|HAMAP-Rule:MF_01956};
OS   Serratia marcescens.
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Yersiniaceae; Serratia.
OX   NCBI_TaxID=615;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=1354954; DOI=10.1128/aac.36.7.1447;
RA   Shaw K.J., Rather P.N., Sabatelli F.J., Mann P., Munayyer H., Mierzwa R.,
RA   Petrikkos G.L., Hare R.S., Miller G.H., Bennett P.;
RT   "Characterization of the chromosomal aac(6')-Ic gene from Serratia
RT   marcescens.";
RL   Antimicrob. Agents Chemother. 36:1447-1455(1992).
RN   [2]
RP   IDENTIFICATION.
RX   PubMed=7567469; DOI=10.1093/nar/23.17.3554;
RA   Borodovsky M., McIninch J., Koonin E.V., Rudd K.E., Medigue C., Danchin A.;
RT   "Detection of new genes in a bacterial genome using Markov models for three
RT   gene classes.";
RL   Nucleic Acids Res. 23:3554-3562(1995).
CC   -!- FUNCTION: Excises ethenocytosine and uracil, which can arise by
CC       alkylation or deamination of cytosine, respectively, from the
CC       corresponding mispairs with guanine in ds-DNA. It is capable of
CC       hydrolyzing the carbon-nitrogen bond between the sugar-phosphate
CC       backbone of the DNA and the mispaired base. The complementary strand
CC       guanine functions in substrate recognition. Required for DNA damage
CC       lesion repair in stationary-phase cells. {ECO:0000255|HAMAP-
CC       Rule:MF_01956}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Specifically hydrolyzes mismatched double-stranded DNA and
CC         polynucleotides, releasing free uracil.; EC=3.2.2.28;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01956};
CC   -!- SUBUNIT: Binds DNA as a monomer. {ECO:0000255|HAMAP-Rule:MF_01956}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01956}.
CC   -!- SIMILARITY: Belongs to the uracil-DNA glycosylase (UDG) superfamily.
CC       TDG/mug family. {ECO:0000255|HAMAP-Rule:MF_01956}.
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DR   EMBL; M94066; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR   RefSeq; WP_033649053.1; NZ_WUWF01000013.1.
DR   AlphaFoldDB; P43343; -.
DR   SMR; P43343; -.
DR   STRING; 273526.SMDB11_3534; -.
DR   PATRIC; fig|615.102.peg.3547; -.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0008263; F:pyrimidine-specific mismatch base pair DNA N-glycosylase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006285; P:base-excision repair, AP site formation; IEA:UniProtKB-UniRule.
DR   CDD; cd10028; UDG-F2_TDG_MUG; 1.
DR   Gene3D; 3.40.470.10; -; 1.
DR   HAMAP; MF_01956; MUG; 1.
DR   InterPro; IPR015637; MUG/TDG.
DR   InterPro; IPR023502; MUG_bact.
DR   InterPro; IPR005122; Uracil-DNA_glycosylase-like.
DR   InterPro; IPR036895; Uracil-DNA_glycosylase-like_sf.
DR   PANTHER; PTHR12159; PTHR12159; 1.
DR   Pfam; PF03167; UDG; 1.
DR   SUPFAM; SSF52141; SSF52141; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; DNA damage; DNA excision; DNA repair; DNA-binding; Hydrolase.
FT   CHAIN           1..162
FT                   /note="G/U mismatch-specific DNA glycosylase"
FT                   /id="PRO_0000185776"
SQ   SEQUENCE   162 AA;  17765 MW;  E0EE1BC338D0883B CRC64;
     MELLAPNLRV VFCGINPGLS SAHQGYPFAN GSNRFWKVIH QAGFTESQLA PEQWQQLKDN
     GCGITALVAR PTVAASELSR DELRSGGEAL QEKILRYQPR ALAILGKQAF TTAFGVKNAP
     WGKQTLTLGE TEVWVLPNPS GLNRATLEQL TASYRELFLA LQ