Rabbit Ku80 Polyclonal Antibody | anti-Ku80 antibody

Phospho-Ku80 (Ser145) Antibody

Cat. Num. AAA9613207

• Gene Names: XRCC5; KU80; KUB2; Ku86; NFIV; KARP1; KARP-1
• Reactivity: Human; Predicted Reactivity: Pig (83%), Horse (83%), Rabbit (83%)
• Applications: Western Blot, ELISA
• Purity: The antibody is from purified rabbit serum by affinity purification via sequential chromatography on phospho-peptide and non-phospho-peptide affinity columns.
• Synonyms: Ku80; Polyclonal Antibody; Phospho-Ku80 (Ser145) Antibody; 86kDa subunit of Ku antigen; ATP dependent DNA helicase 2 subunit 2; ATP dependent DNA helicase II 80kDa subunit; ATP dependent DNA helicase II 86KD subunit; ATP dependent DNA helicase II; ATP-dependent DNA helicase 2 subunit 2; ATP-dependent DNA helicase II 80kDa subunit; CTC box binding factor 85kDa; CTC box-binding factor 85kDa subunit; CTC85; CTCBF; DNA repair protein XRCC5; KARP 1; KARP1; Ku 80; Ku autoantigen 80kDa; Ku86; Ku86 autoantigen related protein 1; KUB 2; KUB2; Lupus Ku autoantigen protein p86; NFIV; Nuclear factor IV; Thyroid lupus autoantigen; Thyroid-lupus autoantigen; TLAA; X ray repair complementing defective repair in Chinese hamster cells 5 (double strand break rejoining); X-ray repair complementing defective repair in Chinese hamster cells 5 (double-strand-break rejoining); X-ray repair cross-complementing protein 5; Xray repair complementing defective repair in Chinese hamster cells 5; XRCC 5; XRCC5; XRCC5_HUMAN; anti-Ku80 antibody

• Host: Rabbit
• Reactivity: Human; Predicted Reactivity: Pig (83%), Horse (83%), Rabbit (83%)
• Clonality: Polyclonal
• Isotype: Rabbit IgG
• Specificity: Phospho-Ku80 (Ser145) Antibody detects endogenous levels of Ku80 only when phosphorylated at Ser145.
• Purity/Purification: The antibody is from purified rabbit serum by affinity purification via sequential chromatography on phospho-peptide and non-phospho-peptide affinity columns.
• Form/Format: Liquid. Rabbit IgG in phosphate buffered saline, pH7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
• Concentration: 1mg/ml (varies by lot)

• Applicable Applications for anti-Ku80 antibody: Western Blot (WB), Peptide ELISA (EIA)
• Application Notes: WB: 1:500-1:2000; Peptide ELISA: 1:20,000-1:40,000
• Immunogen: A synthesized peptide derived from human Ku80 around the phosphorylation site of Ser145.
• Conjugation: Unconjugated
• Fragment: Fab fragment
• Post Translational Modifications: 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. Ubiquitinated by RNF138, leading to remove the Ku complex from DNA breaks.
• Subunit Structure: Heterodimer composed of XRCC5/Ku80 and XRCC6/Ku70. The dimer associates in a DNA-dependent manner with PRKDC to form the DNA-dependent protein kinase complex DNA-PK, and with the LIG4-XRCC4 complex to form the core of the non-homologous end joining (NHEJ) complex. Additional components of the NHEJ complex include NHEJ1/XLF and PAXX. The dimer also associates with NAA15, and this complex displays DNA binding activity towards the osteocalcin FGF response element (OCFRE). In addition, XRCC5 binds to the osteoblast-specific transcription factors MSX2 and RUNX2. Interacts with ELF3. May interact with APLF. The XRCC5/XRCC6 dimer associates in a DNA-dependent manner with APEX1. Identified in a complex with DEAF1 and XRCC6. Interacts with NR4A3; the DNA-dependent protein kinase complex DNA-PK phosphorylates and activates NR4A3 and prevents NR4A3 ubiquitinylation and degradation. Interacts with RNF138. Interacts with CYREN isoform 1 (CYREN-1) and isoform 4 (CYREN-2). Interacts (via N-terminus) with HSF1 (via N-terminus); this interaction is direct and prevents XRCC5/XRCC6 heterodimeric binding and non-homologous end joining (NHEJ) repair activities induced by ionizing radiation (IR). Interacts with DHX9; this interaction occurs in a RNA-dependent manner. Part of the HDP-RNP complex composed of at least HEXIM1, PRKDC, XRCC5, XRCC6, paraspeckle proteins (SFPQ, NONO, PSPC1, RBM14, and MATR3) and NEAT1 RNA. Interacts with ERCC6. (Microbial infection) Interacts with human T-cell leukemia virus 1/HTLV-1 protein HBZ.
• Similarity: The EEXXXDDL motif is required for the interaction with catalytic subunit PRKDC and its recruitment to sites of DNA damage.Belongs to the ku80 family.
• Subcellular Location: Nucleus. Nucleus>Nucleolus. Chromosome.
• Preparation and Storage: Store at -20 degree C. Stable for 12 months from date of receipt.

Western Blot (WB)

(Western blot analysis of extracts from MCF7  , using Phospho-Ku80 (Ser145) Antibody. Lane1 was treated with phospho-blocking peptide, Lane2 was treated with non-phospho-blocking peptide.)

Related Product Information for anti-Ku80 antibody

Single-stranded DNA-dependent ATP-dependent helicase. Has a role in chromosome translocation. The DNA helicase II complex binds preferentially to fork-like ends of double-stranded DNA in a cell cycle-dependent manner. It works in the 3'-5' direction. Binding to DNA may be mediated by XRCC6. Involved in DNA non-homologous end joining (NHEJ) required for double-strand break repair and V (D)J recombination. The XRCC5/6 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. The XRCC5/6 dimer is probably involved in stabilizing broken DNA ends and bringing them together. The assembly of the DNA-PK complex to DNA ends is required for the NHEJ ligation step. In association with NAA15, the XRCC5/6 dimer binds to the osteocalcin promoter and activates osteocalcin expression. The XRCC5/6 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. 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. The XRCC5/6 dimer together with APEX1 acts as a negative regulator of transcription. 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.

NCBI and Uniprot Product Information

• NCBI GI #: 10863945
• NCBI GeneID: 7520
• NCBI Accession #: NP_066964.1
• NCBI GenBank Nucleotide #: NM_021141.3
• UniProt Accession #: P13010; Q0Z7V0; Q4VBQ5; Q53HH7; Q7M4N0; Q9UCQ0; Q9UCQ1; A8K3X5
• Molecular Weight: 82,705 Da
• NCBI Official Full Name: X-ray repair cross-complementing protein 5
• NCBI Official Synonym Full Names: X-ray repair complementing defective repair in Chinese hamster cells 5 (double-strand-break rejoining)
• NCBI Official Symbol: XRCC5
• NCBI Official Synonym Symbols: KU80; KUB2; Ku86; NFIV; KARP1; KARP-1
• NCBI Protein Information: X-ray repair cross-complementing protein 5; TLAA; CTC85; CTCBF; nuclear factor IV; Ku autoantigen, 80kDa; DNA repair protein XRCC5; thyroid-lupus autoantigen; 86 kDa subunit of Ku antigen; lupus Ku autoantigen protein p86; Ku86 autoantigen related protein
• UniProt Protein Name: X-ray repair cross-complementing protein 5
• Protein Family: ATP-dependent DNA helicase
• UniProt Gene Name: XRCC5
• UniProt Synonym Gene Names: G22P2; CTC85; CTCBF; TLAA
• UniProt Entry Name: XRCC5_HUMAN

NCBI Description

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]

Uniprot Description

Ku80: the 80-kilodalton subunit of the Ku complex, also known as ATP-dependant DNA helicase II. A single stranded DNA-dependent ATP-dependent helicase. 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. Has a role in chromosome translocation. The DNA helicase II complex binds preferentially to fork-like ends of double-stranded DNA in a cell cycle-dependent manner. It works in the 3'-5' direction. Binding to DNA may be mediated by p70.

Protein type: RNA-binding; DNA-binding; EC 3.6.4.-; Nuclear receptor co-regulator; Helicase; Nucleolus; EC 3.6.1.-

Chromosomal Location of Human Ortholog: 2q35

Cellular Component: nucleoplasm; nuclear telomere cap complex; membrane; nuclear chromosome, telomeric region; nucleolus; plasma membrane; nucleus; cytosol

Molecular Function: ATP-dependent DNA helicase activity; protein C-terminus binding; protein binding; DNA binding; ubiquitin protein ligase binding; double-stranded DNA binding; telomeric DNA binding; damaged DNA binding; double-stranded telomeric DNA binding; 5'-deoxyribose-5-phosphate lyase activity; ATP binding

Biological Process: response to drug; cell proliferation; positive regulation of neurogenesis; transcription, DNA-dependent; viral reproduction; double-strand break repair; positive regulation of interferon type I production; innate immune response; brain development; DNA repair; negative regulation of transcription, DNA-dependent; telomere maintenance; double-strand break repair via nonhomologous end joining; DNA duplex unwinding; DNA recombination