A0A9R1CEM9 · A0A9R1CEM9_9TREE

Function

function

Structure-specific nuclease with 5'-flap endonuclease and 5'-3' exonuclease activities involved in DNA replication and repair. During DNA replication, cleaves the 5'-overhanging flap structure that is generated by displacement synthesis when DNA polymerase encounters the 5'-end of a downstream Okazaki fragment. It enters the flap from the 5'-end and then tracks to cleave the flap base, leaving a nick for ligation. Also involved in the long patch base excision repair (LP-BER) pathway, by cleaving within the apurinic/apyrimidinic (AP) site-terminated flap. Acts as a genome stabilization factor that prevents flaps from equilibrating into structures that lead to duplications and deletions. Also possesses 5'-3' exonuclease activity on nicked or gapped double-stranded DNA, and exhibits RNase H activity. Also involved in replication and repair of rDNA and in repairing mitochondrial DNA.

Caution

The sequence shown here is derived from an EMBL/GenBank/DDBJ whole genome shotgun (WGS) entry which is preliminary data.

Cofactor

Mg2+ (UniProtKB | Rhea| CHEBI:18420 )

Note: Binds 2 magnesium ions per subunit. They probably participate in the reaction catalyzed by the enzyme. May bind an additional third magnesium ion after substrate binding.

GO annotations

AspectTerm
Cellular Componentmitochondrion
Cellular Componentnucleolus
Cellular Componentnucleoplasm
Molecular Function5'-3' exonuclease activity
Molecular Function5'-flap endonuclease activity
Molecular FunctionDNA binding
Molecular Functionmagnesium ion binding
Biological Processbase-excision repair
Biological ProcessDNA replication, removal of RNA primer

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    Flap endonuclease 1
  • EC number
  • Short names
    FEN-1
  • Alternative names
    • Flap structure-specific endonuclease 1

Gene names

    • ORF names
      D1P53_004985

Organism names

  • Taxonomic identifier
  • Organism
  • Strain
    • MF34
  • Taxonomic lineage
    Eukaryota > Fungi > Dikarya > Basidiomycota > Agaricomycotina > Tremellomycetes > Tremellales > Cryptococcaceae > Cryptococcus > Cryptococcus gattii species complex

Accessions

  • Primary accession
    A0A9R1CEM9

Proteomes

Subcellular Location

Nucleus, nucleolus
Nucleus, nucleoplasm
Mitochondrion
Note: Resides mostly in the nucleoli and relocalizes to the nucleoplasm upon DNA damage.

Keywords

PTM/Processing

Keywords

Family & Domains

Features

Showing features for domain, region, compositional bias.

TypeIDPosition(s)Description
Domain1-108XPG N-terminal
Domain147-219XPG-I
Region273-334Disordered
Compositional bias279-306Acidic residues
Region415-453Disordered
Compositional bias421-444Basic and acidic residues

Sequence similarities

Belongs to the XPG/RAD2 endonuclease family. FEN1 subfamily.

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    453
  • Mass (Da)
    50,251
  • Last updated
    2023-09-13 v1
  • Checksum
    CC5F8354FE187F7C
MGIKGLTGLLSENAPKCMKDHEMKTLFGRKVAIDASMSIYQFLIAVRQQDGQMLMNESGDVTSHLMGFFYRTIRMVDHGIKPCYIFDGKPPELKGSVLAKRFARREEAKEGEEEAKETGTAEDVDKLARRQVRVTREHNEECKKLLSLMGIPVVTAPGEAEAQCAELARAGKVYAAGSEDMDTLTFNSPILLRHLTFSEAKKMPISEIHLDVALRDLEMSMDQFIELCILLGCDYLEPCKGIGPKTALKLMREHGTLGKVVEHIRGKMAEKAEEIKAAADEEAEAEAEAEKYDSDQESEEGGETMINSDGEEVPAPSKPKSPKKKAPAKKKKIASSGMQIPEFWPWEEAKQLFLKPDVVNGDDLVLEWKQPDTEGLVEFLCRDKGFNEDRVRAGTAKLSKMLAAKQQGRLDGFFTVKPKEPATKDAGKGKGKDTKGEKRKAEEKGAAKKKTKK

Features

Showing features for compositional bias.

TypeIDPosition(s)Description
Compositional bias279-306Acidic residues
Compositional bias421-444Basic and acidic residues

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
VHDQ01000012
EMBL· GenBank· DDBJ
KAE8538623.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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