======= FBXO18 ======= == Gene Information == * **Official Symbol**: FBH1 * **Official Name**: F-box DNA helicase 1 * **Aliases and Previous Symbols**: N/A * **Entrez ID**: [[https://www.ncbi.nlm.nih.gov/gene/?term=84893|84893]] * **UniProt**: [[https://www.uniprot.org/uniprot/Q8NFZ0|Q8NFZ0]] * **Interactions**: [[https://thebiogrid.org/search.php?search=FBXO18&organism=9606|BioGRID]] * **PubMed articles**: [[https://www.ncbi.nlm.nih.gov/pubmed/?term=gene%20FBXO18|Open PubMed]] * **OMIM**: [[https://omim.org/entry/607222|Open OMIM]] == Function Summary == * **Entrez Summary**: This gene encodes a member of the F-box protein family, members of which are characterized by an approximately 40 amino acid motif, the F-box. The F-box proteins constitute one of the four subunits of ubiquitin protein ligase complex called SCFs (SKP1-cullin-F-box), which function in phosphorylation-dependent ubiquitination. The F-box proteins are divided into three classes: Fbws containing WD-40 domains, Fbls containing leucine-rich repeats, and Fbxs containing either different protein-protein interaction modules or no recognizable motifs. The protein encoded by this gene belongs to the Fbx class. It contains an F-box motif and seven conserved helicase motifs, and has both DNA-dependent ATPase and DNA unwinding activities. Alternatively spliced transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]. * **UniProt Summary**: 3'-5' DNA helicase and substrate-recognition component of the SCF(FBXO18) E3 ubiquitin ligase complex that plays a key role in response to stalled/damaged replication forks (PubMed:11956208, PubMed:23393192). Involved in genome maintenance by acting as an anti-recombinogenic helicase and preventing extensive strand exchange during homologous recombination: promotes RAD51 filament dissolution from stalled forks, thereby inhibiting homologous recombination and preventing excessive recombination (PubMed:17724085, PubMed:19736316). Also promotes cell death and DNA double-strand breakage in response to replication stress: together with MUS81, promotes the endonucleolytic DNA cleavage following prolonged replication stress via its helicase activity, possibly to eliminate cells with excessive replication stress (PubMed:23319600, PubMed:23361013). Plays a major role in remodeling of stalled DNA forks by catalyzing fork regression, in which the fork reverses and the two nascent DNA strands anneal (PubMed:25772361). In addition to the helicase activity, also acts as the substrate-recognition component of the SCF(FBXO18) E3 ubiquitin ligase complex, a complex that mediates ubiquitination of RAD51, leading to regulate RAD51 subcellular location (PubMed:25585578). {ECO:0000269|PubMed:11956208, ECO:0000269|PubMed:17724085, ECO:0000269|PubMed:19736316, ECO:0000269|PubMed:23319600, ECO:0000269|PubMed:23361013, ECO:0000269|PubMed:25585578, ECO:0000269|PubMed:25772361}. |F-box-like| |F-box| |UvrD-helicase| |response to intra-S DNA damage checkpoint signaling| |DNA translocase activity| |positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage| |response to DNA damage checkpoint signaling| |response to cell cycle checkpoint signaling| |response to DNA integrity checkpoint signaling| |negative regulation of chromatin binding| |replication fork protection| |3-5 DNA helicase activity| |negative regulation of double-strand break repair via homologous recombination| |regulation of chromatin binding| |DNA catabolic process, endonucleolytic| |negative regulation of DNA-dependent DNA replication| |DNA catabolic process| |negative regulation of double-strand break repair| |replication fork processing| |negative regulation of DNA repair| |regulation of intrinsic apoptotic signaling pathway in response to DNA damage| |DNA-dependent DNA replication maintenance of fidelity| |negative regulation of DNA replication| |negative regulation of DNA recombination| |regulation of double-strand break repair via homologous recombination| |regulation of DNA-dependent DNA replication| |positive regulation of intrinsic apoptotic signaling pathway| |DNA helicase activity| |SCF ubiquitin ligase complex| |regulation of double-strand break repair| |negative regulation of response to DNA damage stimulus| |double-strand break repair via homologous recombination| |positive regulation of response to DNA damage stimulus| |recombinational repair| |double-stranded DNA binding| |regulation of DNA recombination| |single-stranded DNA binding| |regulation of DNA replication| |DNA duplex unwinding| |chromatin| |DNA geometric change| |DNA-dependent DNA replication| |negative regulation of DNA metabolic process| |regulation of DNA repair| |regulation of intrinsic apoptotic signaling pathway| |negative regulation of binding| |positive regulation of apoptotic signaling pathway| |double-strand break repair| |DNA replication| |cellular response to biotic stimulus| |regulation of response to DNA damage stimulus| |DNA recombination| |DNA conformation change| |nucleic acid phosphodiester bond hydrolysis| |regulation of DNA metabolic process| |nucleobase-containing compound catabolic process| |regulation of binding| |regulation of apoptotic signaling pathway| |heterocycle catabolic process| |cellular nitrogen compound catabolic process| |aromatic compound catabolic process| |organic cyclic compound catabolic process| |DNA repair| |positive regulation of apoptotic process| |positive regulation of programmed cell death| |protein ubiquitination| |positive regulation of cell death| |regulation of cellular response to stress| |DNA metabolic process| |protein modification by small protein conjugation| |cellular response to DNA damage stimulus| |cellular macromolecule catabolic process| |protein modification by small protein conjugation or removal| |positive regulation of protein phosphorylation| |positive regulation of intracellular signal transduction| |macromolecule catabolic process| |positive regulation of phosphorylation| |chromosome organization| |cell death| |positive regulation of phosphate metabolic process| |positive regulation of phosphorus metabolic process| |negative regulation of molecular function| |cellular response to endogenous stimulus| |positive regulation of protein modification process| |response to biotic stimulus| |negative regulation of cellular macromolecule biosynthetic process| |negative regulation of nucleobase-containing compound metabolic process| |regulation of protein phosphorylation| |negative regulation of macromolecule biosynthetic process| |response to endogenous stimulus| |regulation of response to stress| |ATP binding| |negative regulation of cellular biosynthetic process| |regulation of apoptotic process| |negative regulation of biosynthetic process| |regulation of programmed cell death| |regulation of phosphorylation| |positive regulation of cellular protein metabolic process| |negative regulation of response to stimulus| |positive regulation of signal transduction| |regulation of cell death| |cellular response to stress| |positive regulation of protein metabolic process| |cellular macromolecule biosynthetic process| |macromolecule biosynthetic process| |organic substance catabolic process| |regulation of phosphate metabolic process| |regulation of phosphorus metabolic process| |cellular catabolic process| |positive regulation of cell communication| |positive regulation of signaling| |regulation of intracellular signal transduction| |regulation of protein modification process| \\ === CRISPR Data === ^Screen^Score^ |[[:results:exp356|Docosahexaenoic-acid 50μM R07 exp356]]|1.73| 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**: 7654 * **Expression level (log2 read counts)**: 6.05 {{:chemogenomics:nalm6 dist.png?nolink |}}