ID   UNG_HAEIN               Reviewed;         219 AA.
AC   P43731;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1995, sequence version 1.
DT   02-SEP-2026, entry version 138.
DE   RecName: Full=Uracil-DNA glycosylase;
DE            Short=UDG;
DE            EC=3.2.2.27;
GN   Name=ung; OrderedLocusNames=HI_0018;
OS   Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd).
OC   Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria;
OC   Pasteurellales; Pasteurellaceae; Haemophilus.
OX   NCBI_TaxID=71421;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 51907 / DSM 11121 / KW20 / Rd;
RX   PubMed=7542800; DOI=10.1126/science.7542800;
RA   Fleischmann R.D., Adams M.D., White O., Clayton R.A., Kirkness E.F.,
RA   Kerlavage A.R., Bult C.J., Tomb J.-F., Dougherty B.A., Merrick J.M.,
RA   McKenney K., Sutton G.G., FitzHugh W., Fields C.A., Gocayne J.D.,
RA   Scott J.D., Shirley R., Liu L.-I., Glodek A., Kelley J.M., Weidman J.F.,
RA   Phillips C.A., Spriggs T., Hedblom E., Cotton M.D., Utterback T.R.,
RA   Hanna M.C., Nguyen D.T., Saudek D.M., Brandon R.C., Fine L.D.,
RA   Fritchman J.L., Fuhrmann J.L., Geoghagen N.S.M., Gnehm C.L., McDonald L.A.,
RA   Small K.V., Fraser C.M., Smith H.O., Venter J.C.;
RT   "Whole-genome random sequencing and assembly of Haemophilus influenzae
RT   Rd.";
RL   Science 269:496-512(1995).
CC   -!- FUNCTION: Excises uracil residues from the DNA which can arise as a
CC       result of misincorporation of dUMP residues by DNA polymerase or due to
CC       deamination of cytosine. {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Hydrolyzes single-stranded DNA or mismatched double-stranded
CC         DNA and polynucleotides, releasing free uracil.; EC=3.2.2.27;
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the uracil-DNA glycosylase (UDG) superfamily.
CC       UNG family. {ECO:0000305}.
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DR   EMBL; L42023; AAC21696.1; -; Genomic_DNA.
DR   PIR; A64043; A64043.
DR   AlphaFoldDB; P43731; -.
DR   SMR; P43731; -.
DR   STRING; 71421.HI_0018; -.
DR   EnsemblBacteria; AAC21696; AAC21696; HI_0018.
DR   KEGG; hin:HI_0018; -.
DR   PATRIC; fig|71421.8.peg.18; -.
DR   eggNOG; COG0692; Bacteria.
DR   HOGENOM; CLU_032162_3_0_6; -.
DR   OrthoDB; 9804372at2; -.
DR   PhylomeDB; P43731; -.
DR   BioCyc; HINF71421:G1GJ1-18-MONOMER; -.
DR   Proteomes; UP000000579; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004844; F:uracil DNA N-glycosylase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0097510; P:base-excision repair, AP site formation via deaminated base removal; IBA:GO_Central.
DR   CDD; cd10027; UDG-F1-like; 1.
DR   FunFam; 3.40.470.10:FF:000001; Uracil-DNA glycosylase; 1.
DR   Gene3D; 3.40.470.10; Uracil-DNA glycosylase-like domain; 1.
DR   HAMAP; MF_00148; UDG; 1.
DR   InterPro; IPR002043; UDG_fam1.
DR   InterPro; IPR018085; Ura-DNA_Glyclase_AS.
DR   InterPro; IPR005122; Uracil-DNA_glycosylase-like.
DR   InterPro; IPR036895; Uracil-DNA_glycosylase-like_sf.
DR   NCBIfam; NF003588; PRK05254.1-1; 1.
DR   NCBIfam; NF003589; PRK05254.1-2; 1.
DR   NCBIfam; NF003591; PRK05254.1-4; 1.
DR   NCBIfam; NF003592; PRK05254.1-5; 1.
DR   NCBIfam; TIGR00628; ung; 1.
DR   PANTHER; PTHR11264; URACIL-DNA GLYCOSYLASE; 1.
DR   PANTHER; PTHR11264:SF0; URACIL-DNA GLYCOSYLASE; 1.
DR   Pfam; PF03167; UDG; 1.
DR   SMART; SM00986; UDG; 1.
DR   SMART; SM00987; UreE_C; 1.
DR   SUPFAM; SSF52141; Uracil-DNA glycosylase-like; 1.
DR   PROSITE; PS00130; U_DNA_GLYCOSYLASE; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; DNA damage; DNA repair; Hydrolase; Reference proteome.
FT   CHAIN           1..219
FT                   /note="Uracil-DNA glycosylase"
FT                   /id="PRO_0000176100"
FT   ACT_SITE        61
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   219 AA;  24848 MW;  C270CC31F7B2E58A CRC64;
     MKNWTDVIGT EKAQPYFQHT LQQVHLARAS GKTIYPPQED VFNAFKYTAF EDVKVVILGQ
     DPYHGPNQAH GLAFSVKPEV AIPPSLLNIY KELTQDISGF QMPSNGYLVK WAEQGVLLLN
     TVLTVERGMA HSHANLGWER FTDKVIAVLN EHREKLVFLL WGSHAQKKGQ MIDRTRHLVL
     TAPHPSPLSA HRGFFGCRHF SKTNSYLESH GIKPIDWQI
//