======= TDP1 =======
== Gene Information ==
* **Official Symbol**: TDP1
* **Official Name**: tyrosyl-DNA phosphodiesterase 1
* **Aliases and Previous Symbols**: N/A
* **Entrez ID**: [[https://www.ncbi.nlm.nih.gov/gene/?term=55775|55775]]
* **UniProt**: [[https://www.uniprot.org/uniprot/Q9NUW8|Q9NUW8]]
* **Interactions**: [[https://thebiogrid.org/search.php?search=TDP1&organism=9606|BioGRID]]
* **PubMed articles**: [[https://www.ncbi.nlm.nih.gov/pubmed/?term=gene%20TDP1|Open PubMed]]
* **OMIM**: [[https://omim.org/entry/607198|Open OMIM]]
== Function Summary ==
* **Entrez Summary**: The protein encoded by this gene is involved in repairing stalled topoisomerase I-DNA complexes by catalyzing the hydrolysis of the phosphodiester bond between the tyrosine residue of topoisomerase I and the 3-prime phosphate of DNA. This protein may also remove glycolate from single-stranded DNA containing 3-prime phosphoglycolate, suggesting a role in repair of free-radical mediated DNA double-strand breaks. This gene is a member of the phospholipase D family and contains two PLD phosphodiesterase domains. Mutations in this gene are associated with the disease spinocerebellar ataxia with axonal neuropathy (SCAN1). [provided by RefSeq, Aug 2016].
* **UniProt Summary**: DNA repair enzyme that can remove a variety of covalent adducts from DNA through hydrolysis of a 3'-phosphodiester bond, giving rise to DNA with a free 3' phosphate. Catalyzes the hydrolysis of dead-end complexes between DNA and the topoisomerase I active site tyrosine residue. Hydrolyzes 3'-phosphoglycolates on protruding 3' ends on DNA double-strand breaks due to DNA damage by radiation and free radicals. Acts on blunt-ended double-strand DNA breaks and on single-stranded DNA. Has low 3'exonuclease activity and can remove a single nucleoside from the 3'end of DNA and RNA molecules with 3'hydroxyl groups. Has no exonuclease activity towards DNA or RNA with a 3'phosphate. {ECO:0000269|PubMed:12023295, ECO:0000269|PubMed:15111055, ECO:0000269|PubMed:15811850, ECO:0000269|PubMed:16141202, ECO:0000269|PubMed:22822062}.
|Tyr-DNA phospho|
|3-tyrosyl-DNA phosphodiesterase activity|
|single strand break repair|
|exonuclease activity|
|double-stranded DNA binding|
|single-stranded DNA binding|
|double-strand break repair|
|nucleic acid phosphodiester bond hydrolysis|
|DNA repair|
|intracellular membrane-bounded organelle|
|DNA metabolic process|
|cellular response to DNA damage stimulus|
|cellular response to stress|
\\
=== CRISPR Data ===
^Screen^Score^
|[[:results:exp423|Zebularine 20μM R07 exp423]]|-3.73|
|[[:results:exp121|Golgicide-A 2μM R03 exp121]]|-2.11|
|[[:results:exp330|5-Azacytidine 2μM R07 exp330]]|-1.92|
|[[:results:exp449|Arsenic trioxide 60μM R08 exp449]]|1.72|
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**: 15312
* **Expression level (log2 read counts)**: 5.93
{{:chemogenomics:nalm6 dist.png?nolink |}}