FEN1_CHICK
ID FEN1_CHICK Reviewed; 381 AA.
AC Q5ZLN4; Q90YB0;
DT 11-JAN-2011, integrated into UniProtKB/Swiss-Prot.
DT 23-NOV-2004, sequence version 1.
DT 03-AUG-2022, entry version 112.
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=RCJMB04_5g12;
OS Gallus gallus (Chicken).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC Archelosauria; Archosauria; Dinosauria; Saurischia; Theropoda;
OC Coelurosauria; Aves; Neognathae; Galloanserae; Galliformes; Phasianidae;
OC Phasianinae; Gallus.
OX NCBI_TaxID=9031;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=12136109; DOI=10.1093/nar/gkf440;
RA Matsuzaki Y., Adachi N., Koyama H.;
RT "Vertebrate cells lacking FEN-1 endonuclease are viable but hypersensitive
RT to methylating agents and H2O2.";
RL Nucleic Acids Res. 30:3273-3277(2002).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC STRAIN=CB; TISSUE=Bursa of Fabricius;
RX PubMed=15642098; DOI=10.1186/gb-2004-6-1-r6;
RA Caldwell R.B., Kierzek A.M., Arakawa H., Bezzubov Y., Zaim J., Fiedler P.,
RA Kutter S., Blagodatski A., Kostovska D., Koter M., Plachy J., Carninci P.,
RA Hayashizaki Y., Buerstedde J.-M.;
RT "Full-length cDNAs from chicken bursal lymphocytes to facilitate gene
RT function analysis.";
RL Genome Biol. 6:R6.1-R6.9(2005).
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; AB058602; BAB68507.1; -; Genomic_DNA.
DR EMBL; AJ719700; CAG31359.1; -; mRNA.
DR RefSeq; NP_001072959.1; NM_001079491.1.
DR AlphaFoldDB; Q5ZLN4; -.
DR SMR; Q5ZLN4; -.
DR BioGRID; 690400; 1.
DR STRING; 9031.ENSGALP00000005724; -.
DR PaxDb; Q5ZLN4; -.
DR Ensembl; ENSGALT00000065146; ENSGALP00000046636; ENSGALG00000033781.
DR GeneID; 769677; -.
DR KEGG; gga:769677; -.
DR CTD; 2237; -.
DR VEuPathDB; HostDB:geneid_769677; -.
DR eggNOG; KOG2519; Eukaryota.
DR GeneTree; ENSGT00940000155807; -.
DR HOGENOM; CLU_032444_2_0_1; -.
DR InParanoid; Q5ZLN4; -.
DR OMA; GSQDYDS; -.
DR OrthoDB; 1094524at2759; -.
DR PhylomeDB; Q5ZLN4; -.
DR TreeFam; TF105701; -.
DR Reactome; R-GGA-5685939; HDR through MMEJ (alt-NHEJ).
DR PRO; PR:Q5ZLN4; -.
DR Proteomes; UP000000539; Chromosome 5.
DR Bgee; ENSGALG00000033781; Expressed in testis and 13 other tissues.
DR GO; GO:0000781; C:chromosome, telomeric region; IEA:Ensembl.
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:0005634; C:nucleus; IBA:GO_Central.
DR GO; GO:0032991; C:protein-containing complex; IEA:Ensembl.
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:0000287; F:magnesium ion binding; IBA:GO_Central.
DR GO; GO:0030145; F:manganese ion binding; IBA:GO_Central.
DR GO; GO:0004523; F:RNA-DNA hybrid ribonuclease activity; IBA:GO_Central.
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 GO; GO:0045876; P:positive regulation of sister chromatid cohesion; IEA:Ensembl.
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 2: Evidence at transcript 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..381
FT /note="Flap endonuclease 1"
FT /id="PRO_0000403486"
FT REGION 1..104
FT /note="N-domain"
FT REGION 96..118
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 122..253
FT /note="I-domain"
FT REGION 336..344
FT /note="Interaction with PCNA"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT REGION 351..381
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 352..366
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 47
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT BINDING 70
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT BINDING 86
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="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
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 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 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 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 231
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT BINDING 233
FT /ligand="DNA"
FT /ligand_id="ChEBI:CHEBI:16991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT BINDING 233
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03140"
FT CONFLICT 12..13
FT /note="DV -> ER (in Ref. 1; BAB68507)"
FT /evidence="ECO:0000305"
SQ SEQUENCE 381 AA; 42983 MW; 848B6E0C11FFD56A CRC64;
MGIHGLAKLI ADVAPSAIRE NDIKSYFGRK VAIDASMSIY QFLIAVRQGA EVLQNEEGET
TSHLMGMFYR TIRMVENGIK PVYVFDGKPP QLKSGELAKR TERRSEAEKH LQEAQEAGEE
ANIEKFSKRL VKVTQQHTDE CKKLLMLMGI PYVEAPGEAE ASCATLVKAG KVYAAATEDM
DCLTFGSPVL MRHLTASEAK KLPIQEFHLN RVLQDLGLTW EQFVDLCILL GCDYCESIRG
IGPKRAVELI KQHKTIEEII QHIDTKKYPL PENWLHKEAQ KLFLEPDVIN PDDVELKWTE
PNEEELVQFM CGEKQFNEER IRNGVKRLSK SRQGSTQGRL DDFFKVTGSI TSAKRKEPET
KGSAKKKAKT NSATAKFKKG K
