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F-box DNA helicase 1 OKDB#: 5792
 Symbols: FBH1 Species: human
 Synonyms: Fbx18, hFBH1, FBXO18  Locus: 10p15.1 in Homo sapiens


For retrieval of Nucleotide and Amino Acid sequences please go to: OMIM Entrez Gene
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General Comment DNA helicases are enzymes involved in DNA replication, repair, and recombination. They generate single-stranded DNA by catalyzing the melting of stable helical DNA structures utilizing energy derived from the hydrolysis of nucleoside triphosphates. FBH1 is a member of a unique class of DNA helicases that are also involved in cell cycle regulation by catalyzing ubiquitin ligation of proteins for ubiquitin-mediated proteolysis

NCBI 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]
General function DNA repair, Enzyme
Comment
Cellular localization Nuclear
Comment
Ovarian function
Comment
Expression regulated by
Comment
Ovarian localization Oocyte
Comment
Follicle stages
Comment
Phenotypes
Mutations 1 mutations

Species: human
Mutation name:
type: naturally occurring
fertility: subfertile
Comment: Large-scale genomic analyses link reproductive aging to hypothalamic signaling, breast cancer susceptibility and BRCA1-mediated DNA repair. Day FR et al. (2016) Menopause timing has a substantial impact on infertility and risk of disease, including breast cancer, but the underlying mechanisms are poorly understood. We report a dual strategy in ∼70,000 women to identify common and low-frequency protein-coding variation associated with age at natural menopause (ANM). We identified 44 regions with common variants, including two regions harboring additional rare missense alleles of large effect. We found enrichment of signals in or near genes involved in delayed puberty, highlighting the first molecular links between the onset and end of reproductive lifespan. Pathway analyses identified major association with DNA damage response (DDR) genes, including the first common coding variant in BRCA1 associated with any complex trait. Mendelian randomization analyses supported a causal effect of later ANM on breast cancer risk (∼6% increase in risk per year; P = 3 × 10(-14)), likely mediated by prolonged sex hormone exposure rather than DDR mechanisms. //////////////////

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created: June 3, 2020, 1:10 p.m. by: system   email:
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last update: June 3, 2020, 1:13 p.m. by: hsueh    email:



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