A0A8R2A330 · A0A8R2A330_ACYPI
- ProteinFlap endonuclease 1
- GeneFen1
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids380 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
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.
Cofactor
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
all annotations | all molecular function | virus receptor activity | dna binding | rna binding | cytoskeletal motor activity | catalytic activity | gtpase activity | structural molecule activity | transporter activity | cytoskeletal protein binding | lipid binding | cyclase activity | antioxidant activity | oxidoreductase activity | transferase activity | hydrolase activity | lyase activity | isomerase activity | ligase activity | protein tag activity | cargo receptor activity | histone binding | protein folding chaperone | translation regulator activity | nutrient reservoir activity | receptor ligand activity | molecular transducer activity | molecular adaptor activity | toxin activity | cell adhesion mediator activity | molecular function regulator activity | virus coreceptor activity | catalytic activity, acting on a protein | catalytic activity, acting on dna | catalytic activity, acting on rna | molecular carrier activity | transcription regulator activity | general transcription initiation factor activity | molecular sensor activity | molecular sequestering activity | atp-dependent activity | other molecular function | all biological process | mitotic cell cycle | cytokinesis | cytoplasmic translation | immune system process | muscle system process | circulatory system process | renal system process | respiratory system process | carbohydrate metabolic process | generation of precursor metabolites and energy | dna replication | dna repair | dna recombination | chromatin organization | dna-templated transcription | regulation of dna-templated transcription | trna metabolic process | protein folding | protein glycosylation | amino acid metabolic process | modified amino acid metabolic process | lipid metabolic process | vitamin metabolic process | sulfur compound metabolic process | intracellular protein transport | nucleocytoplasmic transport | autophagy | inflammatory response | mitochondrion organization | cytoskeleton organization | microtubule-based movement | peroxisome organization | lysosome organization | chromosome segregation | cell adhesion | establishment or maintenance of cell polarity | programmed cell death | photosynthesis | mrna metabolic process | snrna metabolic process | vesicle-mediated transport | reproductive process | digestive system process | signaling | cell differentiation | protein catabolic process | extracellular matrix organization | regulatory ncrna-mediated gene silencing | telomere organization | cell junction organization | wound healing | ribosome biogenesis | cilium organization | anatomical structure development | cell motility | nervous system process | endocrine process | protein maturation | transmembrane transport | nucleobase-containing small molecule metabolic process | hepaticobiliary system process | membrane organization | protein-containing complex assembly | cell wall organization or biogenesis | nitrogen cycle metabolic process | protein localization to plasma membrane | defense response to other organism | detoxification | meiotic nuclear division | mitotic nuclear division | mitochondrial gene expression | carbohydrate derivative metabolic process | other biological process | all cellular component | nuclear chromosome | extracellular region | extracellular space | cell wall | nucleus | nuclear envelope | nucleoplasm | chromosome | nucleolus | mitochondrion | lysosome | endosome | vacuole | peroxisome | endoplasmic reticulum | golgi apparatus | lipid droplet | microtubule organizing center | cytosol | ribosome | cytoskeleton | plasma membrane | cilium | plastid | thylakoid | external encapsulating structure | extracellular matrix | cytoplasmic vesicle | organelle | other cellular component | |||
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Aspect | Term | |
---|---|---|
Cellular Component | mitochondrion | |
Cellular Component | nucleolus | |
Cellular Component | nucleoplasm | |
Molecular Function | 5'-3' exonuclease activity | |
Molecular Function | 5'-flap endonuclease activity | |
Molecular Function | DNA binding | |
Molecular Function | magnesium ion binding | |
Molecular Function | manganese ion binding | |
Molecular Function | RNA-DNA hybrid ribonuclease activity | |
Biological Process | base-excision repair | |
Biological Process | DNA replication, removal of RNA primer |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameFlap endonuclease 1
- EC number
- Short namesFEN-1
- Alternative names
Gene names
Organism names
- Organism
- Strain
- Taxonomic lineageEukaryota > Metazoa > Ecdysozoa > Arthropoda > Hexapoda > Insecta > Pterygota > Neoptera > Paraneoptera > Hemiptera > Sternorrhyncha > Aphidomorpha > Aphidoidea > Aphididae > Macrosiphini > Acyrthosiphon
Accessions
- Primary accessionA0A8R2A330
Proteomes
Subcellular Location
UniProt Annotation
GO Annotation
Note: Resides mostly in the nucleoli and relocalizes to the nucleoplasm upon DNA damage.
Keywords
- Cellular component
PTM/Processing
Keywords
- PTM
Structure
Family & Domains
Features
Showing features for domain, region, compositional bias.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Domain | 1-107 | XPG N-terminal | |||
Region | 90-118 | Disordered | |||
Compositional bias | 92-118 | Basic and acidic residues | |||
Domain | 146-218 | XPG-I | |||
Region | 340-380 | Disordered | |||
Compositional bias | 352-370 | Basic and acidic residues | |||
Sequence similarities
Belongs to the XPG/RAD2 endonuclease family. FEN1 subfamily.
Phylogenomic databases
Family and domain databases
Sequence
- Sequence statusComplete
- Length380
- Mass (Da)42,561
- Last updated2022-10-12 v1
- ChecksumBAF815ADC98622C9
Features
Showing features for compositional bias.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Compositional bias | 92-118 | Basic and acidic residues | |||
Compositional bias | 352-370 | Basic and acidic residues | |||
Keywords
- Technical term