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FEN1_ZYGRC
ID   FEN1_ZYGRC              Reviewed;         379 AA.
AC   C5DZA9;
DT   11-JAN-2011, integrated into UniProtKB/Swiss-Prot.
DT   28-JUL-2009, sequence version 1.
DT   03-AUG-2022, entry version 69.
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};
GN   OrderedLocusNames=ZYRO0G02860g;
OS   Zygosaccharomyces rouxii (strain ATCC 2623 / CBS 732 / NBRC 1130 / NCYC 568
OS   / NRRL Y-229) (Candida mogii).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC   Saccharomycetales; Saccharomycetaceae; Zygosaccharomyces.
OX   NCBI_TaxID=559307;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 2623 / CBS 732 / BCRC 21506 / NBRC 1130 / NCYC 568 / NRRL
RC   Y-229;
RX   PubMed=19525356; DOI=10.1101/gr.091546.109;
RG   The Genolevures Consortium;
RA   Souciet J.-L., Dujon B., Gaillardin C., Johnston M., Baret P.V.,
RA   Cliften P., Sherman D.J., Weissenbach J., Westhof E., Wincker P., Jubin C.,
RA   Poulain J., Barbe V., Segurens B., Artiguenave F., Anthouard V.,
RA   Vacherie B., Val M.-E., Fulton R.S., Minx P., Wilson R., Durrens P.,
RA   Jean G., Marck C., Martin T., Nikolski M., Rolland T., Seret M.-L.,
RA   Casaregola S., Despons L., Fairhead C., Fischer G., Lafontaine I., Leh V.,
RA   Lemaire M., de Montigny J., Neuveglise C., Thierry A., Blanc-Lenfle I.,
RA   Bleykasten C., Diffels J., Fritsch E., Frangeul L., Goeffon A.,
RA   Jauniaux N., Kachouri-Lafond R., Payen C., Potier S., Pribylova L.,
RA   Ozanne C., Richard G.-F., Sacerdot C., Straub M.-L., Talla E.;
RT   "Comparative genomics of protoploid Saccharomycetaceae.";
RL   Genome Res. 19:1696-1709(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; CU928179; CAR29193.1; -; Genomic_DNA.
DR   RefSeq; XP_002498126.1; XM_002498081.1.
DR   AlphaFoldDB; C5DZA9; -.
DR   SMR; C5DZA9; -.
DR   STRING; 559307.C5DZA9; -.
DR   PRIDE; C5DZA9; -.
DR   EnsemblFungi; CAR29193; CAR29193; ZYRO0G02860g.
DR   GeneID; 8205914; -.
DR   KEGG; zro:ZYRO0G02860g; -.
DR   HOGENOM; CLU_032444_2_0_1; -.
DR   InParanoid; C5DZA9; -.
DR   Proteomes; UP000008536; Chromosome G.
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..379
FT                   /note="Flap endonuclease 1"
FT                   /id="PRO_0000403607"
FT   REGION          1..105
FT                   /note="N-domain"
FT   REGION          120..251
FT                   /note="I-domain"
FT   REGION          338..346
FT                   /note="Interaction with PCNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   REGION          360..379
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        365..379
FT                   /note="Basic 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         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         156
FT                   /ligand="DNA"
FT                   /ligand_id="ChEBI:CHEBI:16991"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         156
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="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT   BINDING         177
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
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         229
FT                   /ligand="DNA"
FT                   /ligand_id="ChEBI:CHEBI:16991"
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         231
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
SQ   SEQUENCE   379 AA;  42791 MW;  186D32CCE331F827 CRC64;
     MGIKGLNAII SEHVPSAVRK SDIKAFFGRK VAIDASMSLY QFLIAVRQQD GAQLSTESGE
     TTSHLMGMFY RTLRMIDNGI KPCYVFDGKP PILKSFELKK RSDKRVDTEK KLEEAVDQAE
     KLKQERRLVK VSPEHNDEAK YLLKLMGIPY IVAPCEAEAQ CAQLAKDGKV YAAASEDMDT
     LCYKTPYLLR HLTFSEAKKE PIHEIDTELV LQGLELTQEQ FVDLGIMLGC DYCESIRGIG
     PVTALKLIKE HGSLEKIVEF IESGQANNKW KVPEDWPYNE ARQLFLNPDV VNSQDINLKW
     NPPDEEKLIE FLCHEKKFNE ERVKSGIKRL QKGLKSGVQV RLDGFFQKVP KTKEQLAAAT
     AKAKAAKKTK GKTGKVSKR
 
 
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