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XRCC5

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]
Full Name
X-Ray Repair Cross Complementing 5
Function
Single-stranded DNA-dependent ATP-dependent helicase that plays a key role in DNA non-homologous end joining (NHEJ) by recruiting DNA-PK to DNA (PubMed:7957065, PubMed:8621488, PubMed:12145306, PubMed:11493912).
Required for double-strand break repair and V(D)J recombination (PubMed:7957065, PubMed:8621488, PubMed:12145306, PubMed:11493912).
Also has a role in chromosome translocation (PubMed:7957065, PubMed:8621488, PubMed:12145306, PubMed:11493912).
The DNA helicase II complex binds preferentially to fork-like ends of double-stranded DNA in a cell cycle-dependent manner (PubMed:7957065, PubMed:8621488, PubMed:12145306, PubMed:11493912).
It works in the 3'-5' direction (PubMed:7957065, PubMed:8621488, PubMed:12145306, PubMed:11493912).
During NHEJ, the XRCC5-XRRC6 dimer performs the recognition step: it recognizes and binds to the broken ends of the DNA and protects them from further resection (PubMed:7957065, PubMed:8621488, PubMed:12145306, PubMed:11493912).
Binding to DNA may be mediated by XRCC6 (PubMed:7957065, PubMed:8621488, PubMed:12145306, PubMed:11493912).
The XRCC5-XRRC6 dimer acts as regulatory subunit of the DNA-dependent protein kinase complex DNA-PK by increasing the affinity of the catalytic subunit PRKDC to DNA by 100-fold (PubMed:7957065, PubMed:8621488, PubMed:12145306, PubMed:20383123, PubMed:11493912).
The XRCC5-XRRC6 dimer is probably involved in stabilizing broken DNA ends and bringing them together (PubMed:7957065, PubMed:8621488, PubMed:12145306, PubMed:20383123).
The assembly of the DNA-PK complex to DNA ends is required for the NHEJ ligation step (PubMed:7957065, PubMed:8621488, PubMed:12145306, PubMed:20383123).
The XRCC5-XRRC6 dimer probably also acts as a 5'-deoxyribose-5-phosphate lyase (5'-dRP lyase), by catalyzing the beta-elimination of the 5' deoxyribose-5-phosphate at an abasic site near double-strand breaks (PubMed:20383123).
XRCC5 probably acts as the catalytic subunit of 5'-dRP activity, and allows to 'clean' the termini of abasic sites, a class of nucleotide damage commonly associated with strand breaks, before such broken ends can be joined (PubMed:20383123).
The XRCC5-XRRC6 dimer together with APEX1 acts as a negative regulator of transcription (PubMed:8621488).
In association with NAA15, the XRCC5-XRRC6 dimer binds to the osteocalcin promoter and activates osteocalcin expression (PubMed:12145306).
As part of the DNA-PK complex, involved in the early steps of ribosome assembly by promoting the processing of precursor rRNA into mature 18S rRNA in the small-subunit processome (PubMed:32103174).
Binding to U3 small nucleolar RNA, recruits PRKDC and XRCC5/Ku86 to the small-subunit processome (PubMed:32103174).
Plays a role in the regulation of DNA virus-mediated innate immune response by assembling into the HDP-RNP complex, a complex that serves as a platform for IRF3 phosphorylation and subsequent innate immune response activation through the cGAS-STING pathway (PubMed:28712728).
Biological Process
Biological Process activation of innate immune response Source:UniProtKB1 Publication
Biological Process brain development Source:Ensembl
Biological Process cellular hyperosmotic salinity response Source:Ensembl
Biological Process cellular response to DNA damage stimulus Source:UniProtKB1 Publication
Biological Process cellular response to fatty acid Source:Ensembl
Biological Process cellular response to gamma radiation Source:UniProtKB1 Publication
Biological Process cellular response to leukemia inhibitory factor Source:Ensembl
Biological Process cellular response to X-ray Source:GO_Central1 Publication
Biological Process DNA recombination Source:ProtInc1 Publication
Biological Process double-strand break repair Source:BHF-UCL1 Publication
Biological Process double-strand break repair via nonhomologous end joining Source:UniProtKB1 Publication
Biological Process hematopoietic stem cell differentiation Source:Ensembl
Biological Process hematopoietic stem cell proliferation Source:Ensembl
Biological Process innate immune response Source:UniProtKB-KW
Biological Process negative regulation of DNA-templated transcription Source:UniProtKB1 Publication
Biological Process negative regulation of t-circle formation Source:BHF-UCL1 Publication
Biological Process neurogenesis Source:Ensembl
Biological Process positive regulation of catalytic activity Source:BHF-UCL1 Publication
Biological Process positive regulation of neurogenesis Source:Ensembl
Biological Process positive regulation of protein kinase activity Source:CAFA1 Publication
Biological Process positive regulation of telomerase activity Source:BHF-UCL1 Publication
Biological Process positive regulation of telomere maintenance via telomerase Source:BHF-UCL1 Publication
Biological Process protein localization to chromosome, telomeric region Source:BHF-UCL1 Publication
Biological Process recombinational repair Source:ComplexPortal1 Publication
Biological Process regulation of smooth muscle cell proliferation Source:UniProtKB1 Publication
Biological Process regulation of telomere maintenance Source:BHF-UCL3 Publications
Biological Process response to xenobiotic stimulus Source:Ensembl
Biological Process small-subunit processome assembly Source:UniProtKB1 Publication
Biological Process telomere maintenance Source:GO_Central1 Publication
Cellular Location
Nucleus
Nucleus, nucleolus
Chromosome
PTM
ADP-ribosylated by PARP3.
Phosphorylated on serine residues. Phosphorylation by PRKDC may enhance helicase activity.
Sumoylated.
Ubiquitinated by RNF8 via 'Lys-48'-linked ubiquitination following DNA damage, leading to its degradation and removal from DNA damage sites (PubMed:22266820).
Ubiquitinated by RNF138, leading to remove the Ku complex from DNA breaks (PubMed:26502055).

Anti-XRCC5 antibodies

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Target: XRCC5
Host: Mouse
Antibody Isotype: IgG
Specificity: Human
Clone: 149.8
Application*: IH, WB
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG1
Specificity: Human
Clone: CBYCX-137
Application*: E, P, WB
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG1
Specificity: Human
Clone: CBYCX-136
Application*: E, F, GS, IF, IH, IP, WB
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG
Specificity: Human, Monkey
Clone: 8H1
Application*: IF, IP, WB
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG
Specificity: Human
Clone: 8C358
Application*: F, ICC, IP, WB
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG1, κ
Specificity: Human
Clone: F3
Application*: IF, WB
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG1
Specificity: Human, Monkey
Clone: 8H1-C3-G10
Application*: WB, IF, IP
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG1
Specificity: Human, Mouse
Clone: 5C5
Application*: E, WB, P, ICC, IF, F
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG1
Specificity: Human
Clone: 11C965
Application*: E, WB, IH
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG2a
Specificity: Human
Clone: 10F23
Application*: IP
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG2a
Specificity: Human, Mouse, Rat
Clone: CBYCX-135
Application*: WB, E
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG2a, κ
Specificity: Human
Clone: CBYCX-134
Application*: E
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG1
Specificity: Human
Clone: CBYCX-133
Application*: F, ICC, IP, WB
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG2a
Specificity: Human
Clone: CBYCX-132
Application*: E, WB
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG1
Specificity: Human
Clone: CBYCX-131
Application*: WB
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG
Specificity: Human
Clone: 9403
Application*: P, WB
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG2a
Specificity: Human
Clone: MEM-54
Application*: ICC, IP
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG2a
Specificity: Human
Clone: CBYCX-130
Application*: IP
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG1
Specificity: Human, Monkey
Clone: 610-705
Application*: F, IF, IP, WB
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG1
Specificity: Human, Monkey
Clone: 111
Application*: F, IP, WB
Target: XRCC5
Host: Rabbit
Antibody Isotype: IgG
Specificity: Human, Cattle, Mouse, Rat
Clone: SP130
Application*: P, WB
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG1
Specificity: Human
Clone: 3241C1a
Application*: DB, ICC, IP, WB, F
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG1
Specificity: Human, Mouse
Clone: 13B805
Application*: E, F, IH, WB
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG
Specificity: Mouse, Rat
Clone: CBLY1-179
Application*: WB, IP, IF, E
Target: XRCC5
Host: Rabbit
Antibody Isotype: IgG
Specificity: Human
Clone: CBLY1-012
Application*: WB
Target: XRCC5
Host: Rabbit
Antibody Isotype: IgG
Specificity: Human
Clone: S.669.4
Application*: IC, IF, C, P, IP, WB
Target: XRCC5
Host: Rabbit
Antibody Isotype: IgG
Specificity: Human
Clone: C48E7
Application*: F, IF, IH, IP, WB
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG2b
Specificity: Human
Clone: 6.4_1A2
Application*: IP, IC/IF
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG1
Specificity: Human, Monkey
Clone: 0.N.377
Application*: E, F, IF, IP, WB
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG1
Specificity: Human
Clone: 7/Ku80
Application*: WB, IF
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG1, κ
Specificity: Human
Clone: 3D8
Application*: WB, E
Target: XRCC5
Host: Mouse
Antibody Isotype: IgG1
Specificity: Human, Monkey
Clone: 8H1-C3-G10
Application*: WB, IF, IP
More Infomation
For Research Use Only. Not For Clinical Use.
(P): Predicted
* Abbreviations
IFImmunofluorescence
IHImmunohistochemistry
IPImmunoprecipitation
WBWestern Blot
EELISA
MMicroarray
CIChromatin Immunoprecipitation
FFlow Cytometry
FNFunction Assay
IDImmunodiffusion
RRadioimmunoassay
TCTissue Culture
GSGel Supershift
NNeutralization
BBlocking
AActivation
IInhibition
DDepletion
ESELISpot
DBDot Blot
MCMass Cytometry/CyTOF
CTCytotoxicity
SStimulation
AGAgonist
APApoptosis
IMImmunomicroscopy
BABioassay
CSCostimulation
EMElectron Microscopy
IEImmunoelectrophoresis
PAPeptide Array
ICImmunocytochemistry
PEPeptide ELISA
MDMeDIP
SHIn situ hybridization
IAEnzyme Immunoassay
SEsandwich ELISA
PLProximity Ligation Assay
ECELISA(Cap)
EDELISA(Det)
BIBioimaging
IOImmunoassay
LFLateral Flow Immunoassay
LALuminex Assay
CImmunohistochemistry-Frozen Sections
PImmunohistologyp-Paraffin Sections
ISIntracellular Staining for Flow Cytometry
MSElectrophoretic Mobility Shift Assay
RIRNA Binding Protein Immunoprecipitation (RIP)
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