FEN1_PLAF7
ID FEN1_PLAF7 Reviewed; 672 AA.
AC Q7K734; Q9U0K1;
DT 11-JAN-2011, integrated into UniProtKB/Swiss-Prot.
DT 05-JUL-2004, sequence version 1.
DT 03-AUG-2022, entry version 114.
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 ORFNames=PF3D7_0408500, PFD0420c;
OS Plasmodium falciparum (isolate 3D7).
OC Eukaryota; Sar; Alveolata; Apicomplexa; Aconoidasida; Haemosporida;
OC Plasmodiidae; Plasmodium; Plasmodium (Laverania).
OX NCBI_TaxID=36329;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=3D7A;
RA Li J.-L.;
RT "Characterization of the flap endonuclease 1 homolog from the human malaria
RT parasite Plasmodium falciparum.";
RL Submitted (SEP-1998) to the EMBL/GenBank/DDBJ databases.
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=3D7;
RX PubMed=12368864; DOI=10.1038/nature01097;
RA Gardner M.J., Hall N., Fung E., White O., Berriman M., Hyman R.W.,
RA Carlton J.M., Pain A., Nelson K.E., Bowman S., Paulsen I.T., James K.D.,
RA Eisen J.A., Rutherford K.M., Salzberg S.L., Craig A., Kyes S., Chan M.-S.,
RA Nene V., Shallom S.J., Suh B., Peterson J., Angiuoli S., Pertea M.,
RA Allen J., Selengut J., Haft D., Mather M.W., Vaidya A.B., Martin D.M.A.,
RA Fairlamb A.H., Fraunholz M.J., Roos D.S., Ralph S.A., McFadden G.I.,
RA Cummings L.M., Subramanian G.M., Mungall C., Venter J.C., Carucci D.J.,
RA Hoffman S.L., Newbold C., Davis R.W., Fraser C.M., Barrell B.G.;
RT "Genome sequence of the human malaria parasite Plasmodium falciparum.";
RL Nature 419:498-511(2002).
RN [3]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=3D7;
RX PubMed=12368867; DOI=10.1038/nature01095;
RA Hall N., Pain A., Berriman M., Churcher C.M., Harris B., Harris D.,
RA Mungall K.L., Bowman S., Atkin R., Baker S., Barron A., Brooks K.,
RA Buckee C.O., Burrows C., Cherevach I., Chillingworth C., Chillingworth T.,
RA Christodoulou Z., Clark L., Clark R., Corton C., Cronin A., Davies R.M.,
RA Davis P., Dear P., Dearden F., Doggett J., Feltwell T., Goble A.,
RA Goodhead I., Gwilliam R., Hamlin N., Hance Z., Harper D., Hauser H.,
RA Hornsby T., Holroyd S., Horrocks P., Humphray S., Jagels K., James K.D.,
RA Johnson D., Kerhornou A., Knights A., Konfortov B., Kyes S., Larke N.,
RA Lawson D., Lennard N., Line A., Maddison M., Mclean J., Mooney P.,
RA Moule S., Murphy L., Oliver K., Ormond D., Price C., Quail M.A.,
RA Rabbinowitsch E., Rajandream M.A., Rutter S., Rutherford K.M., Sanders M.,
RA Simmonds M., Seeger K., Sharp S., Smith R., Squares R., Squares S.,
RA Stevens K., Taylor K., Tivey A., Unwin L., Whitehead S., Woodward J.R.,
RA Sulston J.E., Craig A., Newbold C., Barrell B.G.;
RT "Sequence of Plasmodium falciparum chromosomes 1, 3-9 and 13.";
RL Nature 419:527-531(2002).
RN [4]
RP INTERACTION WITH PCNA1 AND PCNA2.
RX PubMed=26251451; DOI=10.1042/bj20150452;
RA Mitra P., Banu K., Deshmukh A.S., Subbarao N., Dhar S.K.;
RT "Functional dissection of proliferating-cell nuclear antigens (1 and 2) in
RT human malarial parasite Plasmodium falciparum: possible involvement in DNA
RT replication and DNA damage response.";
RL Biochem. J. 470:115-129(2015).
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 PCNA1 and PCNA2 (PubMed:26251451). Three
CC molecules of FEN1 bind to one PCNA trimer with each molecule binding to
CC one PCNA monomer. PCNA stimulates the nuclease activity without
CC altering cleavage specificity. {ECO:0000255|HAMAP-Rule:MF_03140,
CC ECO:0000269|PubMed:26251451}.
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}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; AF093702; AAG37989.1; -; Genomic_DNA.
DR EMBL; AL844503; CAB62862.1; -; Genomic_DNA.
DR RefSeq; XP_001351399.1; XM_001351363.1.
DR AlphaFoldDB; Q7K734; -.
DR SMR; Q7K734; -.
DR BioGRID; 1207701; 1.
DR IntAct; Q7K734; 1.
DR STRING; 5833.PFD0420c; -.
DR PRIDE; Q7K734; -.
DR EnsemblProtists; CAB62862; CAB62862; PF3D7_0408500.
DR GeneID; 812356; -.
DR KEGG; pfa:PF3D7_0408500; -.
DR VEuPathDB; PlasmoDB:PF3D7_0408500; -.
DR HOGENOM; CLU_032444_1_0_1; -.
DR InParanoid; Q7K734; -.
DR OMA; PRHISEY; -.
DR PhylomeDB; Q7K734; -.
DR Reactome; R-PFA-69166; Removal of the Flap Intermediate.
DR Proteomes; UP000001450; Chromosome 4.
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:0004520; F:endodeoxyribonuclease activity; IDA:GeneDB.
DR GO; GO:0048256; F:flap endonuclease activity; IDA:GeneDB.
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; 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.
PE 1: Evidence at protein level;
KW DNA damage; DNA repair; DNA replication; Endonuclease; Exonuclease;
KW Hydrolase; Magnesium; Metal-binding; Mitochondrion; Nuclease; Nucleus;
KW Phosphoprotein; Reference proteome.
FT CHAIN 1..672
FT /note="Flap endonuclease 1"
FT /id="PRO_0000403539"
FT REGION 1..106
FT /note="N-domain"
FT REGION 124..266
FT /note="I-domain"
FT REGION 349..357
FT /note="Interaction with PCNA"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT REGION 371..610
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 371..495
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 507..524
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 548..610
FT /note="Polar 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 72
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT BINDING 88
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="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
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 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 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 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 244
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT BINDING 246
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT BINDING 246
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
SQ SEQUENCE 672 AA; 76681 MW; 6C2CBDBB95F40042 CRC64;
MGIKGLTKFI ADAAPNAIKE IKIESLMGRI IAIDASMSLY QFIIAIRDSE QYGNLTNESG
ETTSHISGLM SRSIRLMENG LKPIYVFDGA PPELKGSELE KRGEKRQKAE ELLKKAKEEG
NLEEIKKQSG RTVRVTRKQN EEAKKLLTLM GIPIIEAPCE AESQCAFLTK YNLAHATATE
DADALVFGTK ILIRNLNANA TSNQNKNKNN SKRGYILTEI NLEQVLKGLN LTMDEFIDFC
ILCGCDYCDT IKGIGSKTAY NLIKEYNCIE KIIENIDQNK YQVPSNFRFQ EARKSFINPN
VLPKEDIKID WNEPQIEELK HFLIKDYNFN ELRVTNYINR LLKARKVTTQ RRLDNFFTAC
TKKSTKLIVE ETKKEQTLPA RKGKKRPTAG DKNKQKAVKR KIEQANANGH HKMKEENKSV
DNEKNEDGIK SVDNEKNEDG IKSVDDEKNL DDEKNLDDEK NKDDEKNKDD EKNKDDEKNK
DDEKNKDDEK KSLDNFSSNL FDSDKESESG NIIKNEKQNM DDEKINDNLP SLFGDHSRIR
HTENKDNISD INNNNNNNNS SSNNNNISNN HFNSVSSNST FNSSTKLKSE DTLKSNSPLK
EDSPNSYNNI KNNNHTININ SQINNHKEPI SNNNLNNINN STEIKKKNTL FLLPFCPKDV
TNVKKKKYTQ RC
