A0A8C2NC66 · A0A8C2NC66_CAPHI

  • Protein
    DNA repair nuclease/redox regulator APEX1
  • Status
    UniProtKB unreviewed (TrEMBL)
  • Amino acids
  • Protein existence
    Inferred from homology
  • Annotation score
    4/5

Function

function

Initiates repair of AP sites in DNA by catalyzing hydrolytic incision of the phosphodiester backbone immediately adjacent to the damage, generating a single-strand break with 5'-deoxyribose phosphate and 3'-hydroxyl ends.

Catalytic activity

  • Exonucleolytic cleavage in the 3'- to 5'-direction to yield nucleoside 5'-phosphates.
    EC:3.1.11.2 (UniProtKB | ENZYME | Rhea)

Cofactor

Protein has several cofactor binding sites:
Mg2+ (UniProtKB | Rhea| CHEBI:18420 )

Mn2+ (UniProtKB | Rhea| CHEBI:29035 )

Note: Probably binds two magnesium or manganese ions per subunit.
Mn2+ (UniProtKB | Rhea| CHEBI:29035 )

Features

Showing features for active site, binding site, site.

127220406080100120140160180200220240260
Type
IDPosition(s)Description
Active site125
Active site164Proton donor/acceptor
Binding site164Mg2+ 1 (UniProtKB | ChEBI)
Binding site166Mg2+ 1 (UniProtKB | ChEBI)
Site166Transition state stabilizer
Site237Important for catalytic activity
Binding site262Mg2+ 1 (UniProtKB | ChEBI)
Active site263Proton acceptor
Binding site263Mg2+ 1 (UniProtKB | ChEBI)
Site263Interaction with DNA substrate

GO annotations

AspectTerm
Cellular Componentmitochondrion
Cellular Componentnucleus
Molecular FunctionDNA binding
Molecular FunctionDNA-(apurinic or apyrimidinic site) endonuclease activity
Molecular Functiondouble-stranded DNA 3'-5' DNA exonuclease activity
Molecular Functionendonuclease activity
Molecular Functionmetal ion binding
Molecular Functionphosphoric diester hydrolase activity
Biological Processbase-excision repair
Biological ProcessDNA recombination

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    DNA repair nuclease/redox regulator APEX1
  • EC number
  • Short names
    APEN
    ; REF-1
  • Alternative names
    • APEX nuclease
    • Apurinic-apyrimidinic endonuclease 1
    • Redox factor-1
  • Cleaved into 1 chains

Organism names

  • Taxonomic identifier
  • Organism
  • Taxonomic lineage
    Eukaryota > Metazoa > Chordata > Craniata > Vertebrata > Euteleostomi > Mammalia > Eutheria > Laurasiatheria > Artiodactyla > Ruminantia > Pecora > Bovidae > Caprinae > Capra

Accessions

  • Primary accession
    A0A8C2NC66

Proteomes

Subcellular Location

Nucleus
Cytoplasm
Mitochondrion

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain88-263Endonuclease/exonuclease/phosphatase

Sequence similarities

Belongs to the DNA repair enzymes AP/ExoA family.

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    272
  • Mass (Da)
    30,621
  • Last updated
    2022-01-19 v1
  • Checksum
    44F8644250EC6F7A
FTLDQSWIPPTYIPLCITYFIEPEAKKSKAGAKKNEKEAVGEGAVLYEDPPDQKTSPSGKSATLKICSWNVDGLXXXXXXXXXXXXXLSRQCPLKVSYGIGEEEHDQEGRVIVAEYDAFVLVTAYVPNAGRGLVRLEYRQRWDEAFRKFLKGLASRKPLVLCGDLNVAHEEIDLRNPKGNKKNAGFTPQERQGFGELLQAVPLTDSFRHLYPNTAYAYTFWTYMMNARSKNVGWRLDYFLLSQSLLPALCDSKIRSKALGSDHCPITLYLAL

Genome annotation databases

Similar Proteins

Disclaimer

Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. Our staff consists of biologists and biochemists that are not trained to give medical advice.
We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.
Help