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Weak to moderate nuclear staining was observed in cancer tissues. Few cases of testicular tumors and melanomas were strongly positive. Several cases of renal and liver cancers were negative.
Cancer tissues showed strong nuclear immunoreactivity. Most cases of hepatocellular carcinomas were weakly stained or negative.
GENE INFORMATION
Gene name
XRCC5 (HGNC Symbol)
Synonyms
KARP-1, KU80, Ku86, KUB2
Description
X-ray repair complementing defective repair in Chinese hamster cells 5 (double-strand-break rejoining) (HGNC Symbol)
Entrez gene summary
The protein encoded by this gene is the 80-kilodalton subunit of the Ku heterodimer protein which is also known as ATP-dependant DNA helicase II or DNA repair protein XRCC5. Ku is the DNA-binding component of the DNA-dependent protein kinase, and it functions together with the DNA ligase IV-XRCC4 complex in the repair of DNA double-strand break by non-homologous end joining and the completion of V(D)J recombination events. This gene functionally complements Chinese hamster xrs-6, a mutant defective in DNA double-strand break repair and in ability to undergo V(D)J recombination. A rare microsatellite polymorphism in this gene is associated with cancer in patients of varying radiosensitivity. [provided by RefSeq, Jul 2008]
P13010 [Direct mapping] X-ray repair cross-complementing protein 5
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Predicted intracellular proteins Plasma proteins Cancer-related genes Candidate cancer biomarkers Protein evidence (Kim et al 2014) Protein evidence (Ezkurdia et al 2014)
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GO:0000723 [telomere maintenance] GO:0000783 [nuclear telomere cap complex] GO:0000784 [nuclear chromosome, telomeric region] GO:0003677 [DNA binding] GO:0003684 [damaged DNA binding] GO:0003690 [double-stranded DNA binding] GO:0003691 [double-stranded telomeric DNA binding] GO:0004003 [ATP-dependent DNA helicase activity] GO:0005515 [protein binding] GO:0005524 [ATP binding] GO:0005634 [nucleus] GO:0005654 [nucleoplasm] GO:0005730 [nucleolus] GO:0005829 [cytosol] GO:0005886 [plasma membrane] GO:0006281 [DNA repair] GO:0006302 [double-strand break repair] GO:0006303 [double-strand break repair via nonhomologous end joining] GO:0006310 [DNA recombination] GO:0006351 [transcription, DNA-templated] GO:0008022 [protein C-terminus binding] GO:0016020 [membrane] GO:0016032 [viral process] GO:0016817 [hydrolase activity, acting on acid anhydrides] GO:0031625 [ubiquitin protein ligase binding] GO:0032481 [positive regulation of type I interferon production] GO:0032508 [DNA duplex unwinding] GO:0042162 [telomeric DNA binding] GO:0043564 [Ku70:Ku80 complex] GO:0044212 [transcription regulatory region DNA binding] GO:0044822 [poly(A) RNA binding] GO:0045087 [innate immune response] GO:0045892 [negative regulation of transcription, DNA-templated] GO:0048660 [regulation of smooth muscle cell proliferation] GO:0051575 [5'-deoxyribose-5-phosphate lyase activity] GO:0070419 [nonhomologous end joining complex] GO:0071480 [cellular response to gamma radiation] GO:0071481 [cellular response to X-ray] GO:0075713 [establishment of integrated proviral latency]