ID   FPG_RHILO               Reviewed;         296 AA.
AC   Q98BG6;
DT   26-SEP-2001, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 3.
DT   27-MAR-2024, entry version 132.
DE   RecName: Full=Formamidopyrimidine-DNA glycosylase;
DE            Short=Fapy-DNA glycosylase;
DE            EC=3.2.2.23;
DE   AltName: Full=DNA-(apurinic or apyrimidinic site) lyase MutM;
DE            Short=AP lyase MutM;
DE            EC=4.2.99.18;
GN   Name=mutM; Synonyms=fpg; OrderedLocusNames=mll5585;
OS   Mesorhizobium japonicum (strain LMG 29417 / CECT 9101 / MAFF 303099)
OS   (Mesorhizobium loti (strain MAFF 303099)).
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Hyphomicrobiales;
OC   Phyllobacteriaceae; Mesorhizobium.
OX   NCBI_TaxID=266835;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=LMG 29417 / CECT 9101 / MAFF 303099;
RX   PubMed=11214968; DOI=10.1093/dnares/7.6.331;
RA   Kaneko T., Nakamura Y., Sato S., Asamizu E., Kato T., Sasamoto S.,
RA   Watanabe A., Idesawa K., Ishikawa A., Kawashima K., Kimura T., Kishida Y.,
RA   Kiyokawa C., Kohara M., Matsumoto M., Matsuno A., Mochizuki Y.,
RA   Nakayama S., Nakazaki N., Shimpo S., Sugimoto M., Takeuchi C., Yamada M.,
RA   Tabata S.;
RT   "Complete genome structure of the nitrogen-fixing symbiotic bacterium
RT   Mesorhizobium loti.";
RL   DNA Res. 7:331-338(2000).
CC   -!- FUNCTION: Involved in base excision repair of DNA damaged by oxidation
CC       or by mutagenic agents. Acts as a DNA glycosylase that recognizes and
CC       removes damaged bases. Has a preference for oxidized purines, such as
CC       7,8-dihydro-8-oxoguanine (8-oxoG). Has AP (apurinic/apyrimidinic) lyase
CC       activity and introduces nicks in the DNA strand. Cleaves the DNA
CC       backbone by beta-delta elimination to generate a single-strand break at
CC       the site of the removed base with both 3'- and 5'-phosphates (By
CC       similarity). {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Hydrolysis of DNA containing ring-opened 7-methylguanine
CC         residues, releasing 2,6-diamino-4-hydroxy-5-(N-
CC         methyl)formamidopyrimidine.; EC=3.2.2.23;
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2'-deoxyribonucleotide-(2'-deoxyribose 5'-phosphate)-2'-
CC         deoxyribonucleotide-DNA = a 3'-end 2'-deoxyribonucleotide-(2,3-
CC         dehydro-2,3-deoxyribose 5'-phosphate)-DNA + a 5'-end 5'-monophospho-
CC         2'-deoxyribonucleoside-DNA + H(+); Xref=Rhea:RHEA:66592, Rhea:RHEA-
CC         COMP:13180, Rhea:RHEA-COMP:16897, Rhea:RHEA-COMP:17067,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:136412, ChEBI:CHEBI:157695,
CC         ChEBI:CHEBI:167181; EC=4.2.99.18;
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105; Evidence={ECO:0000250};
CC       Note=Binds 1 zinc ion per subunit. {ECO:0000250};
CC   -!- SUBUNIT: Monomer. {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the FPG family. {ECO:0000305}.
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DR   EMBL; BA000012; BAB52006.1; -; Genomic_DNA.
DR   RefSeq; WP_010913344.1; NC_002678.2.
DR   AlphaFoldDB; Q98BG6; -.
DR   SMR; Q98BG6; -.
DR   KEGG; mlo:mll5585; -.
DR   PATRIC; fig|266835.9.peg.4438; -.
DR   eggNOG; COG0266; Bacteria.
DR   HOGENOM; CLU_038423_1_1_5; -.
DR   Proteomes; UP000000552; Chromosome.
DR   GO; GO:0140078; F:class I DNA-(apurinic or apyrimidinic site) endonuclease activity; IEA:UniProtKB-EC.
DR   GO; GO:0003684; F:damaged DNA binding; IEA:InterPro.
DR   GO; GO:0008534; F:oxidized purine nucleobase lesion DNA N-glycosylase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0006284; P:base-excision repair; IEA:InterPro.
DR   CDD; cd08966; EcFpg-like_N; 1.
DR   Gene3D; 1.10.8.50; -; 1.
DR   Gene3D; 3.20.190.10; MutM-like, N-terminal; 1.
DR   HAMAP; MF_00103; Fapy_DNA_glycosyl; 1.
DR   InterPro; IPR015886; DNA_glyclase/AP_lyase_DNA-bd.
DR   InterPro; IPR015887; DNA_glyclase_Znf_dom_DNA_BS.
DR   InterPro; IPR020629; Formamido-pyr_DNA_Glyclase.
DR   InterPro; IPR012319; FPG_cat.
DR   InterPro; IPR035937; MutM-like_N-ter.
DR   InterPro; IPR010979; Ribosomal_uS13-like_H2TH.
DR   InterPro; IPR000214; Znf_DNA_glyclase/AP_lyase.
DR   InterPro; IPR010663; Znf_FPG/IleRS.
DR   NCBIfam; TIGR00577; fpg; 1.
DR   PANTHER; PTHR22993:SF9; ENDONUCLEASE 8-LIKE 1; 1.
DR   PANTHER; PTHR22993; FORMAMIDOPYRIMIDINE-DNA GLYCOSYLASE; 1.
DR   Pfam; PF01149; Fapy_DNA_glyco; 1.
DR   Pfam; PF06831; H2TH; 1.
DR   Pfam; PF06827; zf-FPG_IleRS; 1.
DR   SMART; SM00898; Fapy_DNA_glyco; 1.
DR   SMART; SM01232; H2TH; 1.
DR   SUPFAM; SSF57716; Glucocorticoid receptor-like (DNA-binding domain); 1.
DR   SUPFAM; SSF81624; N-terminal domain of MutM-like DNA repair proteins; 1.
DR   SUPFAM; SSF46946; S13-like H2TH domain; 1.
DR   PROSITE; PS51068; FPG_CAT; 1.
DR   PROSITE; PS01242; ZF_FPG_1; 1.
DR   PROSITE; PS51066; ZF_FPG_2; 1.
PE   3: Inferred from homology;
KW   DNA damage; DNA repair; DNA-binding; Glycosidase; Hydrolase; Lyase;
KW   Metal-binding; Multifunctional enzyme; Zinc; Zinc-finger.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000250"
FT   CHAIN           2..296
FT                   /note="Formamidopyrimidine-DNA glycosylase"
FT                   /id="PRO_0000170856"
FT   ZN_FING         260..296
FT                   /note="FPG-type"
FT   ACT_SITE        2
FT                   /note="Schiff-base intermediate with DNA"
FT                   /evidence="ECO:0000250"
FT   ACT_SITE        3
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000250"
FT   ACT_SITE        58
FT                   /note="Proton donor; for beta-elimination activity"
FT                   /evidence="ECO:0000250"
FT   ACT_SITE        286
FT                   /note="Proton donor; for delta-elimination activity"
FT                   /evidence="ECO:0000250"
FT   BINDING         104
FT                   /ligand="DNA"
FT                   /ligand_id="ChEBI:CHEBI:16991"
FT                   /evidence="ECO:0000250"
FT   BINDING         127
FT                   /ligand="DNA"
FT                   /ligand_id="ChEBI:CHEBI:16991"
FT                   /evidence="ECO:0000250"
FT   BINDING         169
FT                   /ligand="DNA"
FT                   /ligand_id="ChEBI:CHEBI:16991"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   296 AA;  32367 MW;  90905149A7A7088C CRC64;
     MPELPEVETV RRGLQPVLEG ARLTRVEARR PDLRFPFPER FSERLTGKTI TALGRRAKYL
     TMHVQDGPVL ICHLGMSGSF RIETDDDGET PGVFHHERSK STAHDHVVFD VVAADGARSR
     VIFNDPRRFG FMLFAEGSPE THPMLAGLGV EPTGNTLDGV LLASLLKGRG SPLKAALLDQ
     KLIAGLGNIY VSEALWRAGL SPLREAGTIA RPSKKARQQS ERLAEAIRSV ISDAIAAGGS
     SLRDYMHTDG SLGYFQHSFA VYDREGEPCP KPGCGGHIER VVQSGRSTFY CRTCQS
//