FANCE
Fanconi anemia, complementation group E protein is a protein that in humans is encoded by the FANCE gene. The Fanconi anemia complementation group (FANC) currently includes FANCA, FANCB, FANCC, FANCD1 (also called BRCA2), FANCD2, FANCE, FANCF, FANCG, and FANCL. Fanconi anemia is a genetically heterogeneous recessive disorder characterized by cytogenetic instability, hypersensitivity to DNA cross-linking agents, increased chromosomal breakage, and defective DNA repair. The members of the Fanconi anemia complementation group do not share sequence similarity; they are related by their assembly into a common nuclear protein complex. This gene encodes the protein for complementation groufcrp E.
A nuclear complex containing FANCE protein (as well as FANCC, FANCF and FANCG) is essential for the activation of the FANCD2 protein to the mono-ubiquitinated isoform. In normal, non-mutant cells, FANCD2 is mono-ubiquinated in response to DNA damage. FANCE together with FANCC acts as the substrate adapter for this reaction Activated FANCD2 protein co-localizes with BRCA1 (breast cancer susceptibility protein) at ionizing radiation-induced foci and in synaptonemal complexes of meiotic chromosomes. Activated FANCD2 protein may function prior to the initiation of meiotic recombination, perhaps to prepare chromosomes for synapses, or to regulate subsequent recombination events.
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