FPG_SYNEL
ID FPG_SYNEL Reviewed; 284 AA.
AC P95744;
DT 15-JUL-1999, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2007, sequence version 4.
DT 03-AUG-2022, entry version 103.
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;
OS Synechococcus elongatus.
OC Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus.
OX NCBI_TaxID=32046;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA Floss B., Igloi G., Cassier-Chauvat C., Muehlenhoff U.;
RT "Molecular characterization and overexpression of the petF gene from
RT Synechococcus elongatus: evidence for a second site of electrostatic
RT interaction between ferredoxin and the PSI-D subunit.";
RL Photosyn. Res. 54:63-71(1997).
CC -!- FUNCTION: Involved in base excision repair of DNA damaged by oxidation
CC or by mutagenic agents. Acts as 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; Y10290; CAA71333.1; -; Genomic_DNA.
DR AlphaFoldDB; P95744; -.
DR SMR; P95744; -.
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 Gene3D; 3.20.190.10; -; 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_S13-like_H2TH.
DR InterPro; IPR000214; Znf_DNA_glyclase/AP_lyase.
DR InterPro; IPR010663; Znf_FPG/IleRS.
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; SSF46946; SSF46946; 1.
DR SUPFAM; SSF81624; SSF81624; 1.
DR TIGRFAMs; TIGR00577; fpg; 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..284
FT /note="Formamidopyrimidine-DNA glycosylase"
FT /id="PRO_0000170876"
FT ZN_FING 243..277
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 60
FT /note="Proton donor; for beta-elimination activity"
FT /evidence="ECO:0000250"
FT ACT_SITE 267
FT /note="Proton donor; for delta-elimination activity"
FT /evidence="ECO:0000250"
FT BINDING 94
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
FT /evidence="ECO:0000250"
FT BINDING 113
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
FT /evidence="ECO:0000250"
SQ SEQUENCE 284 AA; 31716 MW; EE1FA9C445CCCC49 CRC64;
MPELPEVETV RRGLELVTLK QPIVDVEVLL ARSIALPKEP QAFIEHLRDR RIEQWQRRGK
YLLATLDDGS RLVIHLRMSG QLLWLTTPQP PCPHTRVRWF FPTRAELRFV DQRTFGRCWW
LPPDCRVAEA IPALATLAPE PLSEAFTVAF LAARLAHCRR SIKTALLDQS IVAGMGNIYA
DESLFLSGLH PTQSAHTLTP EQVQRLHGVI CQVLREGIAA GGTTIRTFMS PAGVNGHYGG
QAWVYGRKGE ACRVCGTTIE RLRLAGRSSH YCPQCQPLSS AIGK
