ID L9W1N2_9EURY Unreviewed; 325 AA.
AC L9W1N2;
DT 03-APR-2013, integrated into UniProtKB/TrEMBL.
DT 03-APR-2013, sequence version 1.
DT 27-MAR-2024, entry version 51.
DE RecName: Full=Flap endonuclease 1 {ECO:0000256|HAMAP-Rule:MF_00614};
DE Short=FEN-1 {ECO:0000256|HAMAP-Rule:MF_00614};
DE EC=3.1.-.- {ECO:0000256|HAMAP-Rule:MF_00614};
DE AltName: Full=Flap structure-specific endonuclease 1 {ECO:0000256|HAMAP-Rule:MF_00614};
GN Name=fen {ECO:0000256|HAMAP-Rule:MF_00614};
GN ORFNames=C494_19657 {ECO:0000313|EMBL:ELY43247.1};
OS Natronorubrum bangense JCM 10635.
OC Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Natrialbales;
OC Natrialbaceae; Natronorubrum.
OX NCBI_TaxID=1227500 {ECO:0000313|EMBL:ELY43247.1, ECO:0000313|Proteomes:UP000011690};
RN [1] {ECO:0000313|EMBL:ELY43247.1, ECO:0000313|Proteomes:UP000011690}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=JCM 10635 {ECO:0000313|EMBL:ELY43247.1,
RC ECO:0000313|Proteomes:UP000011690};
RX PubMed=25393412; DOI=10.1371/journal.pgen.1004784;
RA Becker E.A., Seitzer P.M., Tritt A., Larsen D., Krusor M., Yao A.I., Wu D.,
RA Madern D., Eisen J.A., Darling A.E., Facciotti M.T.;
RT "Phylogenetically driven sequencing of extremely halophilic archaea reveals
RT strategies for static and dynamic osmo-response.";
RL PLoS Genet. 10:E1004784-E1004784(2014).
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. Binds the unpaired 3'-DNA
CC end and kinks the DNA to facilitate 5' cleavage specificity. Cleaves
CC one nucleotide into the double-stranded DNA from the junction in flap
CC DNA, leaving a nick for ligation. Also involved in the base excision
CC repair (BER) pathway. Acts as a genome stabilization factor that
CC prevents flaps from equilibrating into structures that lead to
CC duplications and deletions. Also possesses 5'-3' exonuclease activity
CC on nicked or gapped double-stranded DNA.
CC {ECO:0000256|ARBA:ARBA00024702}.
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. Binds the unpaired 3'-DNA
CC end and kinks the DNA to facilitate 5' cleavage specificity. Cleaves
CC one nucleotide into the double-stranded DNA from the junction in flap
CC DNA, leaving a nick for ligation. Also involved in the base excision
CC repair (BER) pathway. Acts as a genome stabilization factor that
CC prevents flaps from equilibrating into structurs that lead to
CC duplications and deletions. Also possesses 5'-3' exonuclease activity
CC on nicked or gapped double-stranded DNA. {ECO:0000256|HAMAP-
CC Rule:MF_00614}.
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00614};
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:0000256|HAMAP-
CC Rule:MF_00614};
CC -!- SUBUNIT: Interacts with PCNA. PCNA stimulates the nuclease activity
CC without altering cleavage specificity. {ECO:0000256|HAMAP-
CC Rule:MF_00614}.
CC -!- SIMILARITY: Belongs to the XPG/RAD2 endonuclease family. FEN1
CC subfamily. {ECO:0000256|HAMAP-Rule:MF_00614}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_00614}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:ELY43247.1}.
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DR EMBL; AOHY01000058; ELY43247.1; -; Genomic_DNA.
DR RefSeq; WP_006068043.1; NZ_AOHY01000058.1.
DR AlphaFoldDB; L9W1N2; -.
DR STRING; 1227500.C494_19657; -.
DR GeneID; 39849973; -.
DR PATRIC; fig|1227500.6.peg.3973; -.
DR eggNOG; arCOG04050; Archaea.
DR OrthoDB; 9593at2157; -.
DR Proteomes; UP000011690; Unassembled WGS sequence.
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:0006281; P:DNA repair; IEA:UniProtKB-UniRule.
DR GO; GO:0043137; P:DNA replication, removal of RNA primer; IEA:UniProtKB-UniRule.
DR CDD; cd09903; H3TH_FEN1-Arc; 1.
DR CDD; cd09867; PIN_FEN1; 1.
DR Gene3D; 1.10.150.20; 5' to 3' exonuclease, C-terminal subdomain; 1.
DR Gene3D; 3.40.50.1010; 5'-nuclease; 1.
DR HAMAP; MF_00614; Fen; 1.
DR InterPro; IPR036279; 5-3_exonuclease_C_sf.
DR InterPro; IPR023426; Flap_endonuc.
DR InterPro; IPR019973; Flap_endonuc_arc.
DR InterPro; IPR008918; HhH2.
DR InterPro; IPR029060; PIN-like_dom_sf.
DR InterPro; IPR006086; XPG-I_dom.
DR InterPro; IPR006084; XPG/Rad2.
DR InterPro; IPR006085; XPG_DNA_repair_N.
DR NCBIfam; TIGR03674; fen_arch; 1.
DR PANTHER; PTHR11081:SF9; FLAP ENDONUCLEASE 1; 1.
DR PANTHER; PTHR11081; FLAP ENDONUCLEASE FAMILY MEMBER; 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; 5' to 3' exonuclease, C-terminal subdomain; 1.
DR SUPFAM; SSF88723; PIN domain-like; 1.
PE 3: Inferred from homology;
KW DNA damage {ECO:0000256|HAMAP-Rule:MF_00614};
KW DNA repair {ECO:0000256|HAMAP-Rule:MF_00614};
KW DNA replication {ECO:0000256|ARBA:ARBA00022705, ECO:0000256|HAMAP-
KW Rule:MF_00614};
KW Endonuclease {ECO:0000256|ARBA:ARBA00022759, ECO:0000256|HAMAP-
KW Rule:MF_00614};
KW Exonuclease {ECO:0000256|ARBA:ARBA00022839, ECO:0000256|HAMAP-
KW Rule:MF_00614};
KW Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000256|HAMAP-Rule:MF_00614};
KW Magnesium {ECO:0000256|ARBA:ARBA00022842, ECO:0000256|HAMAP-Rule:MF_00614};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_00614};
KW Nuclease {ECO:0000256|ARBA:ARBA00022722, ECO:0000256|HAMAP-Rule:MF_00614}.
FT DOMAIN 1..102
FT /note="XPG N-terminal"
FT /evidence="ECO:0000259|SMART:SM00485"
FT DOMAIN 141..209
FT /note="XPG-I"
FT /evidence="ECO:0000259|SMART:SM00484"
FT REGION 317..325
FT /note="Interaction with PCNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00614"
FT BINDING 27
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00614"
FT BINDING 81
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00614"
FT BINDING 153
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00614"
FT BINDING 155
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00614"
FT BINDING 174
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00614"
FT BINDING 176
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00614"
FT BINDING 224
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00614"
SQ SEQUENCE 325 AA; 36156 MW; 38070F1BB3612C73 CRC64;
MGNAALRDIA VIEEIPFDDV EGVVAVDAHN WLYRYLTTTV KWTNSDKYTT ADGTEVANLI
GIVQGLPKFF EHDITPVMVF DGGPSDLKAD EIESRREQRE SYEDQLEVAR EEGDTVAIAQ
LESRTQRLTP TIQETSRELL ELLDVPIVEA PAEGEAQAAH MARRGDADYV GSEDYDALLF
GAPLTLRQLT SKGNPELMDL EATLEHHDLT LEQLIDAAIL IGTDFNDGVH GIGPKTAISE
ITEHGDLWSV LEARGDSVEY GDRVRQLFRD PNVTDDYEFE TTLDPDLEAA KAYVTDEWGV
DAGEVERGFE RIEESVTQAG LDRWT
//
