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FEN1_ANOGA
ID   FEN1_ANOGA              Reviewed;         383 AA.
AC   Q7Q323;
DT   11-JAN-2011, integrated into UniProtKB/Swiss-Prot.
DT   07-DEC-2004, sequence version 2.
DT   03-AUG-2022, entry version 110.
DE   RecName: Full=Flap endonuclease 1 {ECO:0000255|HAMAP-Rule:MF_03140};
DE            Short=FEN-1 {ECO:0000255|HAMAP-Rule:MF_03140};
DE            EC=3.1.-.- {ECO:0000255|HAMAP-Rule:MF_03140};
DE   AltName: Full=Flap structure-specific endonuclease 1 {ECO:0000255|HAMAP-Rule:MF_03140};
GN   Name=Fen1 {ECO:0000255|HAMAP-Rule:MF_03140}; ORFNames=AGAP011448;
OS   Anopheles gambiae (African malaria mosquito).
OC   Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Hexapoda; Insecta; Pterygota;
OC   Neoptera; Endopterygota; Diptera; Nematocera; Culicoidea; Culicidae;
OC   Anophelinae; Anopheles.
OX   NCBI_TaxID=7165;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PEST;
RX   PubMed=12364791; DOI=10.1126/science.1076181;
RA   Holt R.A., Subramanian G.M., Halpern A., Sutton G.G., Charlab R.,
RA   Nusskern D.R., Wincker P., Clark A.G., Ribeiro J.M.C., Wides R.,
RA   Salzberg S.L., Loftus B.J., Yandell M.D., Majoros W.H., Rusch D.B., Lai Z.,
RA   Kraft C.L., Abril J.F., Anthouard V., Arensburger P., Atkinson P.W.,
RA   Baden H., de Berardinis V., Baldwin D., Benes V., Biedler J., Blass C.,
RA   Bolanos R., Boscus D., Barnstead M., Cai S., Center A., Chaturverdi K.,
RA   Christophides G.K., Chrystal M.A.M., Clamp M., Cravchik A., Curwen V.,
RA   Dana A., Delcher A., Dew I., Evans C.A., Flanigan M.,
RA   Grundschober-Freimoser A., Friedli L., Gu Z., Guan P., Guigo R.,
RA   Hillenmeyer M.E., Hladun S.L., Hogan J.R., Hong Y.S., Hoover J.,
RA   Jaillon O., Ke Z., Kodira C.D., Kokoza E., Koutsos A., Letunic I.,
RA   Levitsky A.A., Liang Y., Lin J.-J., Lobo N.F., Lopez J.R., Malek J.A.,
RA   McIntosh T.C., Meister S., Miller J.R., Mobarry C., Mongin E., Murphy S.D.,
RA   O'Brochta D.A., Pfannkoch C., Qi R., Regier M.A., Remington K., Shao H.,
RA   Sharakhova M.V., Sitter C.D., Shetty J., Smith T.J., Strong R., Sun J.,
RA   Thomasova D., Ton L.Q., Topalis P., Tu Z.J., Unger M.F., Walenz B.,
RA   Wang A.H., Wang J., Wang M., Wang X., Woodford K.J., Wortman J.R., Wu M.,
RA   Yao A., Zdobnov E.M., Zhang H., Zhao Q., Zhao S., Zhu S.C., Zhimulev I.,
RA   Coluzzi M., della Torre A., Roth C.W., Louis C., Kalush F., Mural R.J.,
RA   Myers E.W., Adams M.D., Smith H.O., Broder S., Gardner M.J., Fraser C.M.,
RA   Birney E., Bork P., Brey P.T., Venter J.C., Weissenbach J., Kafatos F.C.,
RA   Collins F.H., Hoffman S.L.;
RT   "The genome sequence of the malaria mosquito Anopheles gambiae.";
RL   Science 298:129-149(2002).
CC   -!- FUNCTION: Structure-specific nuclease with 5'-flap endonuclease and 5'-
CC       3' exonuclease activities involved in DNA replication and repair.
CC       During DNA replication, cleaves the 5'-overhanging flap structure that
CC       is generated by displacement synthesis when DNA polymerase encounters
CC       the 5'-end of a downstream Okazaki fragment. It enters the flap from
CC       the 5'-end and then tracks to cleave the flap base, leaving a nick for
CC       ligation. Also involved in the long patch base excision repair (LP-BER)
CC       pathway, by cleaving within the apurinic/apyrimidinic (AP) site-
CC       terminated flap. Acts as a genome stabilization factor that prevents
CC       flaps from equilibrating into structures that lead to duplications and
CC       deletions. Also possesses 5'-3' exonuclease activity on nicked or
CC       gapped double-stranded DNA, and exhibits RNase H activity. Also
CC       involved in replication and repair of rDNA and in repairing
CC       mitochondrial DNA. {ECO:0000255|HAMAP-Rule:MF_03140}.
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03140};
CC       Note=Binds 2 magnesium ions per subunit. They probably participate in
CC       the reaction catalyzed by the enzyme. May bind an additional third
CC       magnesium ion after substrate binding. {ECO:0000255|HAMAP-
CC       Rule:MF_03140};
CC   -!- SUBUNIT: Interacts with PCNA. Three molecules of FEN1 bind to one PCNA
CC       trimer with each molecule binding to one PCNA monomer. PCNA stimulates
CC       the nuclease activity without altering cleavage specificity.
CC       {ECO:0000255|HAMAP-Rule:MF_03140}.
CC   -!- SUBCELLULAR LOCATION: Nucleus, nucleolus {ECO:0000255|HAMAP-
CC       Rule:MF_03140}. Nucleus, nucleoplasm {ECO:0000255|HAMAP-Rule:MF_03140}.
CC       Mitochondrion {ECO:0000255|HAMAP-Rule:MF_03140}. Note=Resides mostly in
CC       the nucleoli and relocalizes to the nucleoplasm upon DNA damage.
CC       {ECO:0000255|HAMAP-Rule:MF_03140}.
CC   -!- PTM: Phosphorylated. Phosphorylation upon DNA damage induces
CC       relocalization to the nuclear plasma. {ECO:0000255|HAMAP-
CC       Rule:MF_03140}.
CC   -!- SIMILARITY: Belongs to the XPG/RAD2 endonuclease family. FEN1
CC       subfamily. {ECO:0000255|HAMAP-Rule:MF_03140}.
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DR   EMBL; AAAB01008966; EAA13029.2; -; Genomic_DNA.
DR   RefSeq; XP_317855.2; XM_317855.2.
DR   AlphaFoldDB; Q7Q323; -.
DR   SMR; Q7Q323; -.
DR   STRING; 7165.AGAP011448-PA; -.
DR   PaxDb; Q7Q323; -.
DR   GeneID; 1278246; -.
DR   KEGG; aga:AgaP_AGAP011448; -.
DR   VEuPathDB; VectorBase:AGAP011448; -.
DR   eggNOG; KOG2519; Eukaryota.
DR   HOGENOM; CLU_032444_2_0_1; -.
DR   InParanoid; Q7Q323; -.
DR   OMA; GSQDYDS; -.
DR   OrthoDB; 1094524at2759; -.
DR   PhylomeDB; Q7Q323; -.
DR   Proteomes; UP000007062; Chromosome 3L.
DR   GO; GO:0005739; C:mitochondrion; IEA:UniProtKB-SubCell.
DR   GO; GO:0005730; C:nucleolus; IEA:UniProtKB-SubCell.
DR   GO; GO:0005654; C:nucleoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005634; C:nucleus; IBA:GO_Central.
DR   GO; GO:0008409; F:5'-3' exonuclease activity; IBA:GO_Central.
DR   GO; GO:0017108; F:5'-flap endonuclease activity; IBA:GO_Central.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0000287; F:magnesium ion binding; IBA:GO_Central.
DR   GO; GO:0030145; F:manganese ion binding; IBA:GO_Central.
DR   GO; GO:0004523; F:RNA-DNA hybrid ribonuclease activity; IBA:GO_Central.
DR   GO; GO:0006284; P:base-excision repair; IEA:UniProtKB-UniRule.
DR   GO; GO:0043137; P:DNA replication, removal of RNA primer; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00614; Fen; 1.
DR   InterPro; IPR002421; 5-3_exonuclease.
DR   InterPro; IPR036279; 5-3_exonuclease_C_sf.
DR   InterPro; IPR023426; Flap_endonuc.
DR   InterPro; IPR008918; HhH2.
DR   InterPro; IPR029060; PIN-like_dom_sf.
DR   InterPro; IPR006086; XPG-I_dom.
DR   InterPro; IPR006084; XPG/Rad2.
DR   InterPro; IPR019974; XPG_CS.
DR   InterPro; IPR006085; XPG_DNA_repair_N.
DR   PANTHER; PTHR11081; PTHR11081; 1.
DR   Pfam; PF00867; XPG_I; 1.
DR   Pfam; PF00752; XPG_N; 1.
DR   PRINTS; PR00853; XPGRADSUPER.
DR   SMART; SM00475; 53EXOc; 1.
DR   SMART; SM00279; HhH2; 1.
DR   SMART; SM00484; XPGI; 1.
DR   SMART; SM00485; XPGN; 1.
DR   SUPFAM; SSF47807; SSF47807; 1.
DR   SUPFAM; SSF88723; SSF88723; 1.
DR   PROSITE; PS00841; XPG_1; 1.
DR   PROSITE; PS00842; XPG_2; 1.
PE   3: Inferred from homology;
KW   DNA damage; DNA repair; DNA replication; Endonuclease; Exonuclease;
KW   Hydrolase; Magnesium; Metal-binding; Mitochondrion; Nuclease; Nucleus;
KW   Phosphoprotein; Reference proteome.
FT   CHAIN           1..383
FT                   /note="Flap endonuclease 1"
FT                   /id="PRO_0000403496"
FT   REGION          1..104
FT                   /note="N-domain"
FT   REGION          122..253
FT                   /note="I-domain"
FT   REGION          336..344
FT                   /note="Interaction with PCNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   REGION          345..383
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        352..366
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         34
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         47
FT                   /ligand="DNA"
FT                   /ligand_id="ChEBI:CHEBI:16991"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         70
FT                   /ligand="DNA"
FT                   /ligand_id="ChEBI:CHEBI:16991"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         86
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         158
FT                   /ligand="DNA"
FT                   /ligand_id="ChEBI:CHEBI:16991"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         158
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         160
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         179
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         181
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         231
FT                   /ligand="DNA"
FT                   /ligand_id="ChEBI:CHEBI:16991"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         233
FT                   /ligand="DNA"
FT                   /ligand_id="ChEBI:CHEBI:16991"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         233
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
SQ   SEQUENCE   383 AA;  42958 MW;  E54494150354C995 CRC64;
     MGIKGLSQLI ADIAPFAVKE GEIKQFFGRK VAIDASMCLY QFLIAVRAEG AQLTSVDGET
     TSHLMGTFYR TIRLLENGIK PVYVFDGKPP DLKSGELNKR AERREEAQKA LDKATEAGAT
     EDIEKFNRRL VKVTKHHANE AKELLRLMGV PYVEAPCEAE AQCAALVRAG KVYATATEDM
     DALTFGSNIL LRHLTFSEAR KMPVQEFAYE KVLKGFELTQ DEFIDLCILL GCDYCDTIRG
     IGPKKAIELI NKHRSIEKIL EHLDRQKYIV PEGWNYEQAR KLFKEPEVQD ADTIELKWSE
     PDEEGLVKFL CGDRQFNEDR IRSGAKKILK TKNTATQGRL DSFFKVLPST GTPKRKVDEK
     KPLAGSSAKK AKTGGATRGR KPK
 
 
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