======= 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 |}}