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FEN1_LODEL
ID   FEN1_LODEL              Reviewed;         384 AA.
AC   A5E121;
DT   11-JAN-2011, integrated into UniProtKB/Swiss-Prot.
DT   12-JUN-2007, sequence version 1.
DT   03-AUG-2022, entry version 81.
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=LELG_03308;
OS   Lodderomyces elongisporus (strain ATCC 11503 / CBS 2605 / JCM 1781 / NBRC
OS   1676 / NRRL YB-4239) (Yeast) (Saccharomyces elongisporus).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC   Saccharomycetales; Debaryomycetaceae; Candida/Lodderomyces clade;
OC   Lodderomyces.
OX   NCBI_TaxID=379508;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 11503 / BCRC 21390 / CBS 2605 / JCM 1781 / NBRC 1676 / NRRL
RC   YB-4239;
RX   PubMed=19465905; DOI=10.1038/nature08064;
RA   Butler G., Rasmussen M.D., Lin M.F., Santos M.A.S., Sakthikumar S.,
RA   Munro C.A., Rheinbay E., Grabherr M., Forche A., Reedy J.L., Agrafioti I.,
RA   Arnaud M.B., Bates S., Brown A.J.P., Brunke S., Costanzo M.C.,
RA   Fitzpatrick D.A., de Groot P.W.J., Harris D., Hoyer L.L., Hube B.,
RA   Klis F.M., Kodira C., Lennard N., Logue M.E., Martin R., Neiman A.M.,
RA   Nikolaou E., Quail M.A., Quinn J., Santos M.C., Schmitzberger F.F.,
RA   Sherlock G., Shah P., Silverstein K.A.T., Skrzypek M.S., Soll D.,
RA   Staggs R., Stansfield I., Stumpf M.P.H., Sudbery P.E., Srikantha T.,
RA   Zeng Q., Berman J., Berriman M., Heitman J., Gow N.A.R., Lorenz M.C.,
RA   Birren B.W., Kellis M., Cuomo C.A.;
RT   "Evolution of pathogenicity and sexual reproduction in eight Candida
RT   genomes.";
RL   Nature 459:657-662(2009).
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; CH981527; EDK45129.1; -; Genomic_DNA.
DR   RefSeq; XP_001525380.1; XM_001525330.1.
DR   AlphaFoldDB; A5E121; -.
DR   SMR; A5E121; -.
DR   STRING; 379508.A5E121; -.
DR   EnsemblFungi; EDK45129; EDK45129; LELG_03308.
DR   GeneID; 5232249; -.
DR   KEGG; lel:LELG_03308; -.
DR   VEuPathDB; FungiDB:LELG_03308; -.
DR   eggNOG; KOG2519; Eukaryota.
DR   HOGENOM; CLU_032444_2_0_1; -.
DR   InParanoid; A5E121; -.
DR   OMA; EFMENDP; -.
DR   OrthoDB; 1094524at2759; -.
DR   Proteomes; UP000001996; Unassembled 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; IEA:UniProtKB-UniRule.
DR   GO; GO:0017108; F:5'-flap endonuclease activity; IEA:UniProtKB-UniRule.
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; 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; 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..384
FT                   /note="Flap endonuclease 1"
FT                   /id="PRO_0000403583"
FT   REGION          1..105
FT                   /note="N-domain"
FT   REGION          123..254
FT                   /note="I-domain"
FT   REGION          341..349
FT                   /note="Interaction with PCNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   REGION          354..384
FT                   /note="Disordered"
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         71
FT                   /ligand="DNA"
FT                   /ligand_id="ChEBI:CHEBI:16991"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         87
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         159
FT                   /ligand="DNA"
FT                   /ligand_id="ChEBI:CHEBI:16991"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         159
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         161
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         180
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         182
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   384 AA;  43647 MW;  9BE035BD00B01F30 CRC64;
     MGVKGLNQLI KEHSPHAYKE FELKNLFGRK VAIDASMCLY QFLIAVRQSD GQQLTNDEGE
     TTSHLSGIFY RTIRMVENNI KPVYVFDGKP PVLKGGELEK RLLKREEAQK QIDNLKDDAS
     VSDMTKYQKR LVRVSRDQND EAKKLLELMG IPYVNAPCEA EAQCAELARG GKVFAAASED
     MDTLCYEPPQ LLRHLTFAEA RKMPIDQITY KEAIQGLDMT KEQFIDLCIL LGCDYCETIK
     GVGPVTAYKL IKEHGSLDNI VKYLQENPDK TKYKVPENWP YNEARQLFMK PEVLPALEVE
     LKWKEPDLDG LIEYMVKNKG FSEDRIRSGA EKLKKGLKAG IQGRLDGFFT VVPKYSNTSP
     LGKDDKKRKT NDKKGAAAKK TKRR
 
 
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