APTX Polyclonal Antibody

disease:Defects in APTX are a cause of coenzyme Q10 deficiency [MIM:607426]. Coenzyme Q10 deficiency is an autosomal recessive disorder with variable manifestations. It can be associated with three main clinical phenotypes: a predominantly myopathic form with central nervous system involvement, an infantile encephalomyopathy with renal dysfunction and an ataxic form with cerebellar atrophy. Coenzyme Q10 deficiency due to APTX mutations is typically associated with cerebellar ataxia.,disease:Defects in APTX are the cause of ataxia-oculomotor apraxia syndrome (AOA) [MIM:208920]. AOA is an autosomal recessive syndrome characterized by early-onset cerebellar ataxia, oculomotor apraxia, early areflexia and late peripheral neuropathy.,domain:The C2H2-type zinc finger mediates DNA-binding.,domain:The FHA-like domain mediates interaction with NCL; XRCC1 and XRCC4.,domain:The histidine triad, also called HIT motif, forms part of the binding loop for the alpha-phosphate of purine mononucleotide.,domain:The HIT domain is required for enzymatic activity.,function:DNA-binding protein involved in single-strand DNA break repair, double-strand DNA break repair and base excision repair. Resolves abortive DNA ligation intermediates formed either at base excision sites, or when DNA ligases attempt to repair non-ligatable breaks induced by reactive oxygen species. Catalyzes the release of adenylate groups covalently linked to 5'-phosphate termini, resulting in the production of 5'-phosphate termini that can be efficiently rejoined. Also able to hydrolyze adenosine 5'-monophosphoramidate (AMP-NH(2)) and diadenosine tetraphosphate (AppppA), but with lower catalytic activity.,similarity:Contains 1 C2H2-type zinc finger.,similarity:Contains 1 FHA-like domain.,similarity:Contains 1 HIT domain.,subcellular location:Upon genotoxic stress, colocalizes with XRCC1 at sites of DNA damage. Interaction with NCL is required for nucleolar localization.,subunit:Interacts with single-strand break repair proteins XRCC1, XRCC4, ADPRT and p53/TP53. Interacts with NCL.,tissue specificity:Widely expressed. In brain, it is expressed in the posterior cortex, cerebellum, hippocampus and olfactory bulb. Isoform 1 is highly expressed in the cerebral cortex and cerebellum, compared to isoform 2.,