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FEN11_PARTE
ID   FEN11_PARTE             Reviewed;         390 AA.
AC   A0CXT3;
DT   11-JAN-2011, integrated into UniProtKB/Swiss-Prot.
DT   28-NOV-2006, sequence version 1.
DT   03-AUG-2022, entry version 73.
DE   RecName: Full=Flap endonuclease 1-1 {ECO:0000255|HAMAP-Rule:MF_03140};
DE            Short=FEN-1-1 {ECO:0000255|HAMAP-Rule:MF_03140};
DE            EC=3.1.-.- {ECO:0000255|HAMAP-Rule:MF_03140};
DE   AltName: Full=Flap structure-specific endonuclease 1-1 {ECO:0000255|HAMAP-Rule:MF_03140};
GN   Name=FEN1-1 {ECO:0000255|HAMAP-Rule:MF_03140}; ORFNames=GSPATT00011232001;
OS   Paramecium tetraurelia.
OC   Eukaryota; Sar; Alveolata; Ciliophora; Intramacronucleata;
OC   Oligohymenophorea; Peniculida; Parameciidae; Paramecium.
OX   NCBI_TaxID=5888;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Stock d4-2;
RX   PubMed=17086204; DOI=10.1038/nature05230;
RA   Aury J.-M., Jaillon O., Duret L., Noel B., Jubin C., Porcel B.M.,
RA   Segurens B., Daubin V., Anthouard V., Aiach N., Arnaiz O., Billaut A.,
RA   Beisson J., Blanc I., Bouhouche K., Camara F., Duharcourt S., Guigo R.,
RA   Gogendeau D., Katinka M., Keller A.-M., Kissmehl R., Klotz C., Koll F.,
RA   Le Mouel A., Lepere G., Malinsky S., Nowacki M., Nowak J.K., Plattner H.,
RA   Poulain J., Ruiz F., Serrano V., Zagulski M., Dessen P., Betermier M.,
RA   Weissenbach J., Scarpelli C., Schaechter V., Sperling L., Meyer E.,
RA   Cohen J., Wincker P.;
RT   "Global trends of whole-genome duplications revealed by the ciliate
RT   Paramecium tetraurelia.";
RL   Nature 444:171-178(2006).
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; CT868208; CAK75600.1; -; Genomic_DNA.
DR   RefSeq; XP_001442997.1; XM_001442960.1.
DR   AlphaFoldDB; A0CXT3; -.
DR   SMR; A0CXT3; -.
DR   STRING; 5888.CAK75600; -.
DR   EnsemblProtists; CAK75600; CAK75600; GSPATT00011232001.
DR   GeneID; 5028782; -.
DR   KEGG; ptm:GSPATT00011232001; -.
DR   eggNOG; KOG2519; Eukaryota.
DR   HOGENOM; CLU_032444_2_0_1; -.
DR   InParanoid; A0CXT3; -.
DR   OMA; GSQDYDS; -.
DR   Proteomes; UP000000600; Partially assembled WGS sequence.
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: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; IEA:UniProtKB-UniRule.
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; 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; 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; SM00279; HhH2; 1.
DR   SMART; SM00484; XPGI; 1.
DR   SMART; SM00485; XPGN; 1.
DR   SUPFAM; SSF47807; SSF47807; 1.
DR   SUPFAM; SSF88723; SSF88723; 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..390
FT                   /note="Flap endonuclease 1-1"
FT                   /id="PRO_0000403534"
FT   REGION          1..108
FT                   /note="N-domain"
FT   REGION          126..254
FT                   /note="I-domain"
FT   REGION          348..356
FT                   /note="Interaction with PCNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   REGION          359..390
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        372..390
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         74
FT                   /ligand="DNA"
FT                   /ligand_id="ChEBI:CHEBI:16991"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         90
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         162
FT                   /ligand="DNA"
FT                   /ligand_id="ChEBI:CHEBI:16991"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         162
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         164
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         183
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         185
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         232
FT                   /ligand="DNA"
FT                   /ligand_id="ChEBI:CHEBI:16991"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         234
FT                   /ligand="DNA"
FT                   /ligand_id="ChEBI:CHEBI:16991"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         234
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
SQ   SEQUENCE   390 AA;  44355 MW;  86542A56BFF2BF44 CRC64;
     MGIHQLMQFL KEKAPNCFRT LMLDYFAGRT IGCDASMAMY QFLIQTQSAG QTQIIELTDK
     DGNRTGHLVG LFNRTLQFLE NGIKPVWVFD GKPPLLKSGE LARRKKLKEE AQVKTELALE
     QGDMQQALLQ HQRTTTISSV MKEDAIKMLK LMGCPVIIAP CEAEAQCAEL CRAGKIYATA
     TEDMDALTFR TPVLLRGFNT KKEPIYEIIY DDMMKELEIT YEQFVDLCIL CGCDYTEKIE
     GIGPGTAYKL IKEFKSIEGI LEHVQKVNAE REKNKQNPKY TVPTKFLYQD SRELFITPLV
     QKGEEIQLTW NKPDVENLKK FLVEEKGFAE SRIDNGLKRI AKKDTTGFQS RLENFFGKTT
     KIIHPNNSKA KGKANKKNEQ TQKSGGKKKI
 
 
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