ID FPG_GLOVI Reviewed; 284 AA.
AC Q7NFW7;
DT 15-DEC-2003, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2007, sequence version 3.
DT 27-MAR-2024, entry version 127.
DE RecName: Full=Formamidopyrimidine-DNA glycosylase {ECO:0000255|HAMAP-Rule:MF_00103};
DE Short=Fapy-DNA glycosylase {ECO:0000255|HAMAP-Rule:MF_00103};
DE EC=3.2.2.23 {ECO:0000255|HAMAP-Rule:MF_00103};
DE AltName: Full=DNA-(apurinic or apyrimidinic site) lyase MutM {ECO:0000255|HAMAP-Rule:MF_00103};
DE Short=AP lyase MutM {ECO:0000255|HAMAP-Rule:MF_00103};
DE EC=4.2.99.18 {ECO:0000255|HAMAP-Rule:MF_00103};
GN Name=mutM {ECO:0000255|HAMAP-Rule:MF_00103};
GN Synonyms=fpg {ECO:0000255|HAMAP-Rule:MF_00103}; OrderedLocusNames=gll3407;
OS Gloeobacter violaceus (strain ATCC 29082 / PCC 7421).
OC Bacteria; Cyanobacteriota; Cyanophyceae; Gloeobacterales; Gloeobacteraceae;
OC Gloeobacter.
OX NCBI_TaxID=251221;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 29082 / PCC 7421;
RX PubMed=14621292; DOI=10.1093/dnares/10.4.137;
RA Nakamura Y., Kaneko T., Sato S., Mimuro M., Miyashita H., Tsuchiya T.,
RA Sasamoto S., Watanabe A., Kawashima K., Kishida Y., Kiyokawa C., Kohara M.,
RA Matsumoto M., Matsuno A., Nakazaki N., Shimpo S., Takeuchi C., Yamada M.,
RA Tabata S.;
RT "Complete genome structure of Gloeobacter violaceus PCC 7421, a
RT cyanobacterium that lacks thylakoids.";
RL DNA Res. 10:137-145(2003).
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.
CC {ECO:0000255|HAMAP-Rule:MF_00103}.
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 Evidence={ECO:0000255|HAMAP-Rule:MF_00103};
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; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_00103};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00103};
CC Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_00103};
CC -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_00103}.
CC -!- SIMILARITY: Belongs to the FPG family. {ECO:0000255|HAMAP-
CC Rule:MF_00103}.
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DR EMBL; BA000045; BAC91348.1; -; Genomic_DNA.
DR RefSeq; NP_926353.1; NC_005125.1.
DR RefSeq; WP_011143396.1; NC_005125.1.
DR AlphaFoldDB; Q7NFW7; -.
DR SMR; Q7NFW7; -.
DR STRING; 251221.gene:10760919; -.
DR EnsemblBacteria; BAC91348; BAC91348; BAC91348.
DR KEGG; gvi:gll3407; -.
DR PATRIC; fig|251221.4.peg.3443; -.
DR eggNOG; COG0266; Bacteria.
DR HOGENOM; CLU_038423_1_2_3; -.
DR InParanoid; Q7NFW7; -.
DR OrthoDB; 9800855at2; -.
DR PhylomeDB; Q7NFW7; -.
DR Proteomes; UP000000557; Chromosome.
DR GO; GO:0034039; F:8-oxo-7,8-dihydroguanine DNA N-glycosylase activity; IBA:GO_Central.
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:0003906; F:DNA-(apurinic or apyrimidinic site) endonuclease activity; IBA:GO_Central.
DR GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0006284; P:base-excision repair; IBA:GO_Central.
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; Reference proteome; Zinc;
KW Zinc-finger.
FT INIT_MET 1
FT /note="Removed"
FT /evidence="ECO:0000250"
FT CHAIN 2..284
FT /note="Formamidopyrimidine-DNA glycosylase"
FT /id="PRO_0000170826"
FT ZN_FING 244..278
FT /note="FPG-type"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00103"
FT ACT_SITE 2
FT /note="Schiff-base intermediate with DNA"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00103"
FT ACT_SITE 3
FT /note="Proton donor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00103"
FT ACT_SITE 61
FT /note="Proton donor; for beta-elimination activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00103"
FT ACT_SITE 268
FT /note="Proton donor; for delta-elimination activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00103"
FT BINDING 95
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00103"
FT BINDING 114
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00103"
FT BINDING 159
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00103"
SQ SEQUENCE 284 AA; 31344 MW; 2179EF18ACADE44B CRC64;
MPELPEVETL RRDLLIHLPG ERVVGVEVLR SDSVGYPADP AIFIEQMQGQ IFSDRMLRRG
KYLLLYFARG AALGVHLRMS GRLLWRCGEA PLEPHTRVRI PMASGHELRF EDMRVFGRLW
LIPVGVPPER VMGGLTRLGP EPFAEMFDGP YLAGRFAGRN QPVKSALLDQ QLVAGVGNIY
ADEALFSSGI HPALPVGGLD AAALERLHRA VVKVLEAGIA QRGATLRNYT DAQGINGNYA
GTAWVYGRKG QPCRVCNTPI ERIRLAGRST HFCPTCQRAQ QSVQ
//
