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Database: UniProt
Entry: A0A401ITI4_9LACO
LinkDB: A0A401ITI4_9LACO
Original site: A0A401ITI4_9LACO 
ID   A0A401ITI4_9LACO        Unreviewed;       275 AA.
AC   A0A401ITI4;
DT   08-MAY-2019, integrated into UniProtKB/TrEMBL.
DT   08-MAY-2019, sequence version 1.
DT   24-JAN-2024, entry version 20.
DE   SubName: Full=Exodeoxyribonuclease III {ECO:0000313|EMBL:GBG94829.1};
GN   Name=xthA {ECO:0000313|EMBL:GBG94829.1};
GN   ORFNames=LFYK43_12880 {ECO:0000313|EMBL:GBG94829.1};
OS   Ligilactobacillus salitolerans.
OC   Bacteria; Bacillota; Bacilli; Lactobacillales; Lactobacillaceae;
OC   Ligilactobacillus.
OX   NCBI_TaxID=1808352 {ECO:0000313|EMBL:GBG94829.1, ECO:0000313|Proteomes:UP000286848};
RN   [1] {ECO:0000313|Proteomes:UP000286848}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=YK43 {ECO:0000313|Proteomes:UP000286848};
RA   Tohno M., Tanizawa Y.;
RT   "Draft genome sequences of Lactobacillus sp. YK43.";
RL   Submitted (APR-2018) to the EMBL/GenBank/DDBJ databases.
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000256|PIRSR:PIRSR604808-2};
CC       Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC         Evidence={ECO:0000256|PIRSR:PIRSR604808-2};
CC       Note=Probably binds two magnesium or manganese ions per subunit.
CC       {ECO:0000256|PIRSR:PIRSR604808-2};
CC   -!- SIMILARITY: Belongs to the DNA repair enzymes AP/ExoA family.
CC       {ECO:0000256|ARBA:ARBA00007092}.
CC   -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC       whole genome shotgun (WGS) entry which is preliminary data.
CC       {ECO:0000313|EMBL:GBG94829.1}.
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DR   EMBL; BFFP01000019; GBG94829.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A401ITI4; -.
DR   OrthoDB; 9803914at2; -.
DR   Proteomes; UP000286848; Unassembled WGS sequence.
DR   GO; GO:0003677; F:DNA binding; IEA:InterPro.
DR   GO; GO:0008311; F:double-stranded DNA 3'-5' DNA exonuclease activity; IEA:UniProtKB-EC.
DR   GO; GO:0004519; F:endonuclease activity; IEA:InterPro.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0006281; P:DNA repair; IEA:InterPro.
DR   CDD; cd09087; Ape1-like_AP-endo; 1.
DR   Gene3D; 3.60.10.10; Endonuclease/exonuclease/phosphatase; 1.
DR   InterPro; IPR004808; AP_endonuc_1.
DR   InterPro; IPR020847; AP_endonuclease_F1_BS.
DR   InterPro; IPR020848; AP_endonuclease_F1_CS.
DR   InterPro; IPR036691; Endo/exonu/phosph_ase_sf.
DR   InterPro; IPR005135; Endo/exonuclease/phosphatase.
DR   NCBIfam; TIGR00195; exoDNase_III; 1.
DR   NCBIfam; TIGR00633; xth; 1.
DR   PANTHER; PTHR22748; AP ENDONUCLEASE; 1.
DR   PANTHER; PTHR22748:SF6; DNA-(APURINIC OR APYRIMIDINIC SITE) ENDONUCLEASE; 1.
DR   Pfam; PF03372; Exo_endo_phos; 1.
DR   SUPFAM; SSF56219; DNase I-like; 1.
DR   PROSITE; PS00726; AP_NUCLEASE_F1_1; 1.
DR   PROSITE; PS00728; AP_NUCLEASE_F1_3; 1.
DR   PROSITE; PS51435; AP_NUCLEASE_F1_4; 1.
PE   3: Inferred from homology;
KW   Magnesium {ECO:0000256|PIRSR:PIRSR604808-2};
KW   Manganese {ECO:0000256|PIRSR:PIRSR604808-2};
KW   Metal-binding {ECO:0000256|PIRSR:PIRSR604808-2}.
FT   DOMAIN          4..253
FT                   /note="Endonuclease/exonuclease/phosphatase"
FT                   /evidence="ECO:0000259|Pfam:PF03372"
FT   ACT_SITE        128
FT                   /evidence="ECO:0000256|PIRSR:PIRSR604808-1"
FT   ACT_SITE        167
FT                   /note="Proton donor/acceptor"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR604808-1"
FT   ACT_SITE        266
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR604808-1"
FT   BINDING         7
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR604808-2"
FT   BINDING         44
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR604808-2"
FT   BINDING         167
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR604808-2"
FT   BINDING         169
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR604808-2"
FT   BINDING         265
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR604808-2"
FT   BINDING         266
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR604808-2"
FT   SITE            169
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR604808-3"
FT   SITE            240
FT                   /note="Important for catalytic activity"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR604808-3"
FT   SITE            266
FT                   /note="Interaction with DNA substrate"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR604808-3"
SQ   SEQUENCE   275 AA;  31203 MW;  D0748C39248765BD CRC64;
     MKLISWNIDS VNAALTSDSA RAQLTREVLK TIHSYEPDVI AIQETKLSAK GPTKKHLAAL
     DELFPEYALA WRSSEEPARK SYAGTMFLYK KELTPVVTAP EIGAPAPMDQ EGRILTLEFD
     NCYVTEVYTP NSGNELVRLS DRQIWDQKYQ EYLLSLDQKK PVISSGDFNV AHTEIDLKHP
     ATNHHSAGFT DEERADFTKL LASGFSDSFR LIHGDVKGAY SWWAQRVKTS KINNSGWRID
     YYLVSERIKD QVVKSEMVDS GTRQDHTPIY LELDL
//
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