Recombinant Human Ku70 protein is a Human Full Length protein, in the 1 to 609 aa range, expressed in Wheat germ and suitable for SDS-PAGE, ELISA, WB.
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- Arteriosclerosis, thrombosis, and vascular biology 40:783-8012020PIM1 (Moloney Murine Leukemia Provirus Integration Site) Inhibition Decreases the Nonhomologous End-Joining DNA Damage Repair Signaling Pathway in Pulmonary Hypertension.Applications:Unspecified applicationReactive species:Unspecified reactive speciesMarie-Claude Lampron et. al.PubMed 31969012
Key facts
- Expression system
- Wheat germ
- Tags
- Tag free
- Applications
- SDS-PAGE, ELISA, WB
- Biologically active
- No
Amino acid sequence
M S G W E S Y Y K T E G D E E A E E E Q E E N L E A S G D Y K Y S G R D S L I F L V D A S K A M F E S Q S E D E L T P F D M S I Q C I Q S V Y I S K I I S S D R D L L A V V F Y G T E K D K N S V N F K N I Y V L Q E L D N P G A K R I L E L D Q F K G Q Q G Q K R F Q D M M G H G S D Y S L S E V L W V C A N L F S D V Q F K M S H K R I M L F T N E D N P H G N D S A K A S R A R T K A G D L R D T G I F L D L M H L K K P G G F D I S L F Y R D I I S I A E D E D L R V H F E E S S K L E D L L R K V R A K E T R K R A L S R L K L K L N K D I V I S V G I Y N L V Q K A L K P P P I K L Y R E T N E P V K T K T R T F N T S T G G L L L P S D T K R S Q I Y G S R Q I I L E K E E T E E L K R F D D P G L M L M G F K P L V L L K K H H Y L R P S L F V Y P E E S L V I G S S T L F S A L L I K C L E K E V A A L C R Y T P R R N I P P Y F V A L V P Q E E E L D D Q K I Q V T P P G F Q L V F L P F A D D K R K M P F T E K I M A T P E Q V G K M K A I V E K L R F T Y R S D S F E N P V L Q Q H F R N L E A L A L D L M E P E Q A V D L T L P K V E A M N K R L G S L V D E F K E L V Y P P D Y N P E G K V T K R K H D N E G S G S K R P K V E Y S E E E L K T H I S K G T L G K F T V P M L K E A C R A Y G L K S G L K K Q E L L E A L T K H F Q D
Reactivity data
| Application | Reactivity | Dilution info | Notes |
|---|---|---|---|
Application SDS-PAGE | Reactivity Reacts | Dilution info - | Notes - |
Application ELISA | Reactivity Reacts | Dilution info - | Notes - |
Application WB | Reactivity Reacts | Dilution info - | Notes - |
Target data
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:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). Required for double-strand break repair and V(D)J recombination (PubMed:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). Also has a role in chromosome translocation (PubMed:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). Has a role in chromosome translocation (PubMed:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). The DNA helicase II complex binds preferentially to fork-like ends of double-stranded DNA in a cell cycle-dependent manner (PubMed:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). It works in the 3'-5' direction (PubMed:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). 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:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). Binding to DNA may be mediated by XRCC6 (PubMed:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). The XRCC5-XRRC6 dimer acts as a 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:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). The XRCC5-XRRC6 dimer is probably involved in stabilizing broken DNA ends and bringing them together (PubMed:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). The assembly of the DNA-PK complex to DNA ends is required for the NHEJ ligation step (PubMed:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). 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). 5'-dRP lyase activity 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). 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).
Alternative names
G22P1, XRCC6, X-ray repair cross-complementing protein 6, 5'-deoxyribose-5-phosphate lyase Ku70, 70 kDa subunit of Ku antigen, ATP-dependent DNA helicase 2 subunit 1, ATP-dependent DNA helicase II 70 kDa subunit, CTC box-binding factor 75 kDa subunit, DNA repair protein XRCC6, Lupus Ku autoantigen protein p70, Thyroid-lupus autoantigen, X-ray repair complementing defective repair in Chinese hamster cells 6, 5'-dRP lyase Ku70, CTC75, CTCBF, Ku70, TLAA
Recommended products
Recombinant Human Ku70 protein is a Human Full Length protein, in the 1 to 609 aa range, expressed in Wheat germ and suitable for SDS-PAGE, ELISA, WB.
Key facts
- Expression system
- Wheat germ
- Tags
- Tag free
- Applications
- SDS-PAGE, ELISA, WB
- Biologically active
- No
- Accession
- P12956-1
- Animal free
- No
- Species
- Human
- Concentration
- Storage buffer
pH: 8
Constituents: 0.79% Tris HCl, 0.31% Glutathione
Sequence info
Amino acid sequence
- M S G W E S Y Y K T E G D E E A E E E Q E E N L E A S G D Y K Y S G R D S L I F L V D A S K A M F E S Q S E D E L T P F D M S I Q C I Q S V Y I S K I I S S D R D L L A V V F Y G T E K D K N S V N F K N I Y V L Q E L D N P G A K R I L E L D Q F K G Q Q G Q K R F Q D M M G H G S D Y S L S E V L W V C A N L F S D V Q F K M S H K R I M L F T N E D N P H G N D S A K A S R A R T K A G D L R D T G I F L D L M H L K K P G G F D I S L F Y R D I I S I A E D E D L R V H F E E S S K L E D L L R K V R A K E T R K R A L S R L K L K L N K D I V I S V G I Y N L V Q K A L K P P P I K L Y R E T N E P V K T K T R T F N T S T G G L L L P S D T K R S Q I Y G S R Q I I L E K E E T E E L K R F D D P G L M L M G F K P L V L L K K H H Y L R P S L F V Y P E E S L V I G S S T L F S A L L I K C L E K E V A A L C R Y T P R R N I P P Y F V A L V P Q E E E L D D Q K I Q V T P P G F Q L V F L P F A D D K R K M P F T E K I M A T P E Q V G K M K A I V E K L R F T Y R S D S F E N P V L Q Q H F R N L E A L A L D L M E P E Q A V D L T L P K V E A M N K R L G S L V D E F K E L V Y P P D Y N P E G K V T K R K H D N E G S G S K R P K V E Y S E E E L K T H I S K G T L G K F T V P M L K E A C R A Y G L K S G L K K Q E L L E A L T K H F Q D
- Accession
- P12956
- Protein length
- Full Length
- Predicted molecular weight
- 92.73 kDa
- Amino acids
- 1 to 609
- Nature
- Recombinant
Specifications
- Form
- Liquid
General info
- 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:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). Required for double-strand break repair and V(D)J recombination (PubMed:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). Also has a role in chromosome translocation (PubMed:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). Has a role in chromosome translocation (PubMed:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). The DNA helicase II complex binds preferentially to fork-like ends of double-stranded DNA in a cell cycle-dependent manner (PubMed:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). It works in the 3'-5' direction (PubMed:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). 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:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). Binding to DNA may be mediated by XRCC6 (PubMed:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). The XRCC5-XRRC6 dimer acts as a 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:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). The XRCC5-XRRC6 dimer is probably involved in stabilizing broken DNA ends and bringing them together (PubMed:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). The assembly of the DNA-PK complex to DNA ends is required for the NHEJ ligation step (PubMed:11493912, PubMed:12145306, PubMed:20493174, PubMed:2466842, PubMed:7957065, PubMed:8621488, PubMed:9742108). 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). 5'-dRP lyase activity 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). 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).
- Sequence similarities
Belongs to the ku70 family.
- Post-translational modifications
Phosphorylation by PRKDC may enhance helicase activity. Phosphorylation of Ser-51 does not affect DNA repair.
- Subcellular localisation
- Nucleus
Storage
- Shipped at conditions
- Dry Ice
- Appropriate short-term storage conditions
- -80°C
- Appropriate long-term storage conditions
- -80°C
- Aliquoting information
- Upon delivery aliquot
- Storage information
- Avoid freeze / thaw cycle
Supplementary info
- This supplementary information is collated from multiple sources and compiled automatically.
- Activity summary
Ku70 also known as XRCC6 or K331 is a DNA repair protein with a molecular mass of approximately 70 kDa. It belongs to the Ku protein family which includes Ku80. This protein expresses mainly in the nucleus of cells across various tissue types. As a part of a heterodimer together with Ku80 Ku70 forms the Ku70/Ku80 complex which binds to free DNA ends allowing DNA repair processes to occur efficiently.
- Biological function summary
The Ku70 protein plays a significant role in maintaining genomic stability. It is an important component of the non-homologous end joining (NHEJ) pathway a primary mechanism for repairing double-strand breaks in DNA. By forming the Ku70/Ku80 complex it accurately aligns DNA ends to facilitate repair and prevent chromosomal abnormalities. The Ku70 protein also involves in telomere maintenance and can influence cell cycle regulation.
- Pathways
Ku70 contributes mainly to the NHEJ DNA repair pathway. This pathway is important for cellular response to DNA damage and involves other proteins such as DNA-PKcs (DNA-dependent protein kinase catalytic subunit) and XRCC4. Ku70's interaction with DNA-PKcs enables the activation of its kinase activity which is essential for the repair process. Additionally Ku70 is involved in the homologous recombination pathway where it interacts with proteins like Rad51 to ensure repair fidelity.
- Associated diseases and disorders
Research links the Ku70 protein to cancer and neurodegenerative diseases. Dysregulation or mutations affecting Ku70 can lead to genomic instability contributing to cancer development. Ku70 also shows connections to neurodegenerative conditions like Alzheimer's disease where its role in DNA repair and apoptosis regulation may impact neuronal cell survival. Interactions with p53 a protein important for DNA damage response further underline Ku70's influence in these disease contexts.
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SDS-PAGE - Recombinant Human Ku70 protein (ab132938)
12.5% SDS-PAGE analysis of ab132938 stained with Coomassie Blue
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