======= POLD4 =======
== Gene Information ==
* **Official Symbol**: POLD4
* **Official Name**: DNA polymerase delta 4, accessory subunit
* **Aliases and Previous Symbols**: N/A
* **Entrez ID**: [[https://www.ncbi.nlm.nih.gov/gene/?term=57804|57804]]
* **UniProt**: [[https://www.uniprot.org/uniprot/Q9HCU8|Q9HCU8]]
* **Interactions**: [[https://thebiogrid.org/search.php?search=POLD4&organism=9606|BioGRID]]
* **PubMed articles**: [[https://www.ncbi.nlm.nih.gov/pubmed/?term=gene%20POLD4|Open PubMed]]
* **OMIM**: [[https://omim.org/entry/611525|Open OMIM]]
== Function Summary ==
* **Entrez Summary**: N/A
* **UniProt Summary**: As a component of the tetrameric DNA polymerase delta complex (Pol-delta4), plays a role in high fidelity genome replication and repair. Within this complex, increases the rate of DNA synthesis and decreases fidelity by regulating POLD1 polymerase and proofreading 3' to 5' exonuclease activity (PubMed:16510448, PubMed:19074196, PubMed:20334433). Pol-delta4 participates in Okazaki fragment processing, through both the short flap pathway, as well as a nick translation system (PubMed:24035200). Under conditions of DNA replication stress, required for the repair of broken replication forks through break- induced replication (BIR), a mechanism that may induce segmental genomic duplications of up to 200 kb (PubMed:24310611). Involved in Pol-delta4 translesion synthesis (TLS) of templates carrying O6-methylguanine or abasic sites (PubMed:19074196). Its degradation in response to DNA damage is required for the inhibition of fork progression and cell survival (PubMed:24022480). {ECO:0000269|PubMed:16510448, ECO:0000269|PubMed:19074196, ECO:0000269|PubMed:20334433, ECO:0000269|PubMed:24022480, ECO:0000269|PubMed:24035200, ECO:0000269|PubMed:24310611}.
|DNA pol delta 4|
|delta DNA polymerase complex|
|nucleotide-excision repair, DNA gap filling|
|telomere maintenance via semi-conservative replication|
|DNA-directed DNA polymerase activity|
|mismatch repair|
|nucleotide-excision repair, DNA incision, 5-to lesion|
|DNA damage response, detection of DNA damage|
|nucleotide-excision repair, DNA incision|
|translesion synthesis|
|nuclear DNA replication|
|cell cycle DNA replication|
|DNA synthesis involved in DNA repair|
|postreplication repair|
|transcription-coupled nucleotide-excision repair|
|telomere maintenance|
|telomere organization|
|DNA biosynthetic process|
|nucleotide-excision repair|
|DNA-dependent DNA replication|
|DNA replication|
|nucleic acid phosphodiester bond hydrolysis|
|anatomical structure homeostasis|
|DNA repair|
|detection of stimulus|
|DNA metabolic process|
|cellular response to DNA damage stimulus|
|nucleolus|
|cellular homeostasis|
|cell cycle process|
|chromosome organization|
|nucleobase-containing compound biosynthetic process|
|heterocycle biosynthetic process|
|aromatic compound biosynthetic process|
|mitochondrion|
|organic cyclic compound biosynthetic process|
|cell cycle|
|cellular nitrogen compound biosynthetic process|
|homeostatic process|
|cellular response to stress|
|cellular macromolecule biosynthetic process|
|macromolecule biosynthetic process|
\\
=== CRISPR Data ===
^Screen^Score^
|[[:results:exp49|NFN1 0.1μM R01 exp49]]|-1.88|
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**: 6870
* **Expression level (log2 read counts)**: 3.48
{{:chemogenomics:nalm6 dist.png?nolink |}}