FEN1_ARTOC
ID FEN1_ARTOC Reviewed; 394 AA.
AC C5FZT5;
DT 11-JAN-2011, integrated into UniProtKB/Swiss-Prot.
DT 28-JUL-2009, sequence version 1.
DT 03-AUG-2022, entry version 63.
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=MCYG_08207;
OS Arthroderma otae (strain ATCC MYA-4605 / CBS 113480) (Microsporum canis).
OC Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Eurotiomycetes;
OC Eurotiomycetidae; Onygenales; Arthrodermataceae; Microsporum.
OX NCBI_TaxID=554155;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC MYA-4605 / CBS 113480;
RX PubMed=22951933; DOI=10.1128/mbio.00259-12;
RA Martinez D.A., Oliver B.G., Graeser Y., Goldberg J.M., Li W.,
RA Martinez-Rossi N.M., Monod M., Shelest E., Barton R.C., Birch E.,
RA Brakhage A.A., Chen Z., Gurr S.J., Heiman D., Heitman J., Kosti I.,
RA Rossi A., Saif S., Samalova M., Saunders C.W., Shea T., Summerbell R.C.,
RA Xu J., Young S., Zeng Q., Birren B.W., Cuomo C.A., White T.C.;
RT "Comparative genome analysis of Trichophyton rubrum and related
RT dermatophytes reveals candidate genes involved in infection.";
RL MBio 3:E259-E259(2012).
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; DS995708; EEQ35388.1; -; Genomic_DNA.
DR RefSeq; XP_002843124.1; XM_002843078.1.
DR AlphaFoldDB; C5FZT5; -.
DR SMR; C5FZT5; -.
DR STRING; 63405.XP_002843124.1; -.
DR EnsemblFungi; EEQ35388; EEQ35388; MCYG_08207.
DR GeneID; 9227559; -.
DR eggNOG; KOG2519; Eukaryota.
DR HOGENOM; CLU_032444_1_1_1; -.
DR OMA; GSQDYDS; -.
DR OrthoDB; 1094524at2759; -.
DR Proteomes; UP000002035; 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..394
FT /note="Flap endonuclease 1"
FT /id="PRO_0000403585"
FT REGION 1..103
FT /note="N-domain"
FT REGION 102..123
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 121..252
FT /note="I-domain"
FT REGION 340..348
FT /note="Interaction with PCNA"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT REGION 349..394
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 356..386
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 69
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT BINDING 85
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT BINDING 157
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT BINDING 157
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="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT BINDING 178
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
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 230
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
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 232
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
SQ SEQUENCE 394 AA; 44213 MW; 099CB6404195FB34 CRC64;
MGIKSLYQII SENAPDAIKA GEIKNQFGRK VAIDAYVKTA QRYRASTDEE QLTNESGETT
SHLMGMFYRT LRMVDNGIKP LYVFDGAPPK LKSGELAKRT MRKAEAQEAA EEAKETGTAE
DVEKFSRRTV RVTREHNAEC KRLLKLMGIP YIDAPTEAEA QCAVLAKEGK VFGAASEDMD
TLCFAAPVLL RHLTFSEQRK EPILEIHLDK VLEGLGMEMT QFVDLCILLG CDYLDPIPKV
GPNTALKMIR DHGTLEKVVE TIESDPKKKY VIPDDWPYLQ ARDLFFNPDV RPADAPECDF
KWTAPDVEGL VRFLVEEKGF SEDRVRNGAA RLTKNLKSAQ QSRLEGFFKP VAKTEQQKAT
AKRKAEEKAE LAKKKKKEDA KAKRAMGAKP RGAR
