======= FAN1 ======= == Gene Information == * **Official Symbol**: FAN1 * **Official Name**: FANCD2 and FANCI associated nuclease 1 * **Aliases and Previous Symbols**: N/A * **Entrez ID**: [[https://www.ncbi.nlm.nih.gov/gene/?term=22909|22909]] * **UniProt**: [[https://www.uniprot.org/uniprot/Q9Y2M0|Q9Y2M0]] * **Interactions**: [[https://thebiogrid.org/search.php?search=FAN1&organism=9606|BioGRID]] * **PubMed articles**: [[https://www.ncbi.nlm.nih.gov/pubmed/?term=gene%20FAN1|Open PubMed]] * **OMIM**: [[https://omim.org/entry/613534|Open OMIM]] == Function Summary == * **Entrez Summary**: This gene plays a role in DNA interstrand cross-link repair and encodes a protein with 5' flap endonuclease and 5'-3' exonuclease activity. Mutations in this gene cause karyomegalic interstitial nephritis. Alternatively spliced transcript variants encoding distinct isoforms have been described. [provided by RefSeq, Feb 2016]. * **UniProt Summary**: Nuclease required for the repair of DNA interstrand cross-links (ICL) recruited at sites of DNA damage by monoubiquitinated FANCD2. Specifically involved in repair of ICL- induced DNA breaks by being required for efficient homologous recombination, probably in the resolution of homologous recombination intermediates (PubMed:20603015, PubMed:20603016, PubMed:20603073, PubMed:20671156, PubMed:24981866, PubMed:25430771). Not involved in DNA double-strand breaks resection (PubMed:20603015, PubMed:20603016). Acts as a 5'-3' exonuclease that anchors at a cut end of DNA and cleaves DNA successively at every third nucleotide, allowing to excise an ICL from one strand through flanking incisions. Probably keeps excising with 3'-flap annealing until it reaches and unhooks the ICL (PubMed:25430771). Acts at sites that have a 5'-terminal phosphate anchor at a nick or a 1- or 2-nucleotide flap and is augmented by a 3' flap (PubMed:25430771). Also has endonuclease activity toward 5'-flaps (PubMed:20603015, PubMed:20603016, PubMed:24981866). {ECO:0000269|PubMed:20603015, ECO:0000269|PubMed:20603016, ECO:0000269|PubMed:20603073, ECO:0000269|PubMed:20671156, ECO:0000269|PubMed:24981866, ECO:0000269|PubMed:25135477, ECO:0000269|PubMed:25430771}. |VRR NUC| |flap-structured DNA binding| |phosphodiesterase I activity| |ubiquitin-dependent protein binding| |5-flap endonuclease activity| |5-3 exonuclease activity| |nucleotide-excision repair, DNA incision| |interstrand cross-link repair| |intercellular bridge| |double-strand break repair via homologous recombination| |recombinational repair| |nucleotide-excision repair| |double-strand break repair| |magnesium ion binding| |DNA recombination| |nucleic acid phosphodiester bond hydrolysis| |DNA repair| |DNA metabolic process| |cellular response to DNA damage stimulus| |cellular response to stress| \\ === CRISPR Data === ^Screen^Score^ |[[:results:exp19|Etoposide 1μM R00 exp19]]|1.74| No correlation found to any other genes in chemogenomics. Global Fraction of Cell Lines Where Essential: 0/739 ^Tissue^Fraction Of Cell Lines Where Essential^ |1290807.0|0/1| |909776.0|0/1| |bile duct|0/28| |blood|0/28| |bone|0/26| |breast|0/33| |central nervous system|0/56| |cervix|0/4| |colorectal|0/17| |esophagus|0/13| |fibroblast|0/1| |gastric|0/16| |kidney|0/21| |liver|0/20| |lung|0/75| |lymphocyte|0/16| |ovary|0/26| |pancreas|0/24| |peripheral nervous system|0/16| |plasma cell|0/15| |prostate|0/1| |skin|0/24| |soft tissue|0/9| |thyroid|0/2| |upper aerodigestive|0/22| |urinary tract|0/29| |uterus|0/5| == Essentiality in NALM6 == * **Essentiality Rank**: 7448 * **Expression level (log2 read counts)**: 6.68 {{:chemogenomics:nalm6 dist.png?nolink |}}