FEN1_PLAVS
ID FEN1_PLAVS Reviewed; 623 AA.
AC A5KAL1;
DT 11-JAN-2011, integrated into UniProtKB/Swiss-Prot.
DT 10-JUL-2007, sequence version 1.
DT 03-AUG-2022, entry version 82.
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=PVX_000820;
OS Plasmodium vivax (strain Salvador I).
OC Eukaryota; Sar; Alveolata; Apicomplexa; Aconoidasida; Haemosporida;
OC Plasmodiidae; Plasmodium; Plasmodium (Plasmodium).
OX NCBI_TaxID=126793;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Salvador I;
RX PubMed=18843361; DOI=10.1038/nature07327;
RA Carlton J.M., Adams J.H., Silva J.C., Bidwell S.L., Lorenzi H., Caler E.,
RA Crabtree J., Angiuoli S.V., Merino E.F., Amedeo P., Cheng Q.,
RA Coulson R.M.R., Crabb B.S., del Portillo H.A., Essien K., Feldblyum T.V.,
RA Fernandez-Becerra C., Gilson P.R., Gueye A.H., Guo X., Kang'a S.,
RA Kooij T.W.A., Korsinczky M., Meyer E.V.-S., Nene V., Paulsen I., White O.,
RA Ralph S.A., Ren Q., Sargeant T.J., Salzberg S.L., Stoeckert C.J.,
RA Sullivan S.A., Yamamoto M.M., Hoffman S.L., Wortman J.R., Gardner M.J.,
RA Galinski M.R., Barnwell J.W., Fraser-Liggett C.M.;
RT "Comparative genomics of the neglected human malaria parasite Plasmodium
RT vivax.";
RL Nature 455:757-763(2008).
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; AAKM01000015; EDL43610.1; -; Genomic_DNA.
DR RefSeq; XP_001613337.1; XM_001613287.1.
DR AlphaFoldDB; A5KAL1; -.
DR SMR; A5KAL1; -.
DR STRING; 126793.A5KAL1; -.
DR EnsemblProtists; EDL43610; EDL43610; PVX_000820.
DR GeneID; 5472594; -.
DR KEGG; pvx:PVX_000855; -.
DR VEuPathDB; PlasmoDB:PVX_000820; -.
DR InParanoid; A5KAL1; -.
DR OMA; KKRDAPN; -.
DR PhylomeDB; A5KAL1; -.
DR Proteomes; UP000008333; Chromosome 3.
DR Proteomes; UP000008333; 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; 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.
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..623
FT /note="Flap endonuclease 1"
FT /id="PRO_0000403541"
FT REGION 1..106
FT /note="N-domain"
FT REGION 124..267
FT /note="I-domain"
FT REGION 350..358
FT /note="Interaction with PCNA"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT REGION 368..517
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 389..449
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 470..484
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 485..517
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 245
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT BINDING 247
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT BINDING 247
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
SQ SEQUENCE 623 AA; 69212 MW; 5FC8477B7239BDCF CRC64;
MGIKGLTKFI ADAAPNAIKE IKIENLMGRV VAIDASMSLY QFIIAIRDSE QYGNLTNESG
ETTSHISGLM SRSIKLMENG LKPIYVFDGA PPELKGSELE KRGEKRQKAE ELLKKAKEEG
NLEEIKKQSG RTVRVTRKQN EEAKKLLTLM GIPVVEAPCE AESQCAFLTK YNLAHATATE
DADALVFGTK ILIRNLNANA SSANQNKNKN SSKRGYILTE INLEQVLKGL NLSMNEFIDF
CILCGCDYCD TIKGIGSKTA YNLIKEYNSI EKIIENIDKN KYQVPSNFRF VEARDSFINP
KVLPKEEVKI DWCEPKIEEL KNFLIKDYNF NEVRVTNYIN RLLKARKVTT QRRLDNFFTA
CTKKSTKLVI EESQSQSKTQ KEAKSKRKGK KRDAPNDGAA KLNSKQSKKT KVEKEPKREK
KDEEAPNGEA HNGDNNEDEE TPGMGARDPF DTDDEEDNPS PNFFHQKSDS ESGNVKKEKT
EQEGNATTAG DVYNYPNGKD TAGSNTHLSS NSTLHSCNNV GSEKAPNEGM HTVGSSAPEA
GTNHVGINHV GTNHVGINHV GTNHVGTNHV GSGDLFPPNV ADCANNNADK AQPEMKKKNM
LFLLPYCPKN VTNVKKRKSV QRC
