======= 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 |}}