Anti-DNA polymerase theta antibody (Internal) (STJ71548)

SKU:
STJ71548-100

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Host: Goat
Applications: Pep-ELISA
Reactivity: Human
Note: STRICTLY FOR FURTHER SCIENTIFIC RESEARCH USE ONLY (RUO). MUST NOT TO BE USED IN DIAGNOSTIC OR THERAPEUTIC APPLICATIONS.
Short Description: Goat polyclonal antibody anti-DNA polymerase theta (Internal) is suitable for use in ELISA research applications.
Clonality: Polyclonal
Conjugation: Unconjugated
Isotype: IgG
Formulation: 0.5 mg/ml in Tris saline, 0.02% sodium azide, pH7.3 with 0.5% bovine serum albumin. NA
Purification: Purified from goat serum by ammonium sulphate precipitation followed by antigen affinity chromatography using the immunizing peptide.
Concentration: 0.5 mg/mL
Dilution Range: Peptide ELISA: antibody detection limit dilution 1:1000.
WB: Preliminary experiments in Human Brain (Cerebellum lysates) and in lysates of cell line HeLa gave no specific signal but low background (at antibody concentration up to 1µg/ml).
Storage Instruction: Store at-20°C on receipt and minimise freeze-thaw cycles.
Gene Symbol: POLQ
Gene ID: 10721
Uniprot ID: DPOLQ_HUMAN
Immunogen Region: Internal
Accession Number: NP_955452.3
Immunogen Sequence: DTHQQLTCSNDES
Post Translational Modifications Phosphorylated by PLK1.promoting interaction with TOPBP1 and recruitment to DNA damage sites.
Function Low-fidelity DNA polymerase with a helicase activity that promotes microhomology-mediated end-joining (MMEJ), an alternative non-homologous end-joining (NHEJ) machinery required to repair double-strand breaks in DNA during mitosis. MMEJ is an error-prone repair pathway that produces deletions of sequences from the strand being repaired and promotes genomic rearrangements, such as telomere fusions, some of them leading to cellular transformation. MMEJ is required during mitosis to repair persistent double-strand breaks that originate in S-phase. Although error-prone, MMEJ protects against chromosomal instability and tumorigenesis. The polymerase acts by binding directly the 2 ends of resected double-strand breaks, allowing microhomologous sequences in the overhangs to form base pairs. It then extends each strand from the base-paired region using the opposing overhang as a template. Requires partially resected DNA containing 2 to 6 base pairs of microhomology to perform MMEJ. The polymerase lacks proofreading activity and is highly promiscuous: unlike most polymerases, promotes extension of ssDNA and partial ssDNA (pssDNA) substrates. When the ends of a break do not contain terminal microhomology must identify embedded complementary sequences through a scanning step. Also acts as a DNA helicase, promoting dissociation of the replication protein A complex (RPA/RP-A), composed of RPA1, RPA2 and RPA3, from resected double-strand breaks to allow their annealing and subsequent joining by MMEJ. Removal of RPA/RP-A complex proteins prevents RAD51 accumulation at resected ends, thereby inhibiting homology-recombination repair (HR) pathway. Also shows RNA-directed DNA polymerase activity to mediate DNA repair in vitro.however this activity needs additional evidence in vivo. May also have lyase activity. Involved in somatic hypermutation of immunoglobulin genes, a process that requires the activity of DNA polymerases to ultimately introduce mutations at both A/T and C/G base pairs. POLQ-mediated end joining activity is involved in random integration of exogenous DNA hampers.
Protein Name Dna Polymerase Theta
Dna Polymerase Eta Includes - Helicase Polq - Dna Polymerase Polq
Rna-Directed Dna Polymerase Polq
Database Links Reactome: R-HSA-5685939
Cellular Localisation Nucleus
Chromosome
Enriched In Chromatin In Response To Ultaviolet (Uv) Light
Binds To Chromatin During Early G1
Recruited To Dna Damage Sites
Such As Double-Stranded Breaks (Dsbs)
Following Interaction With Topbp1 And Rhno1
Alternative Antibody Names Anti-Dna Polymerase Theta antibody
Anti-Dna Polymerase Eta Includes - Helicase Polq - Dna Polymerase Polq antibody
Anti-Rna-Directed Dna Polymerase Polq antibody
Anti-POLQ antibody
Anti-POLH antibody

Information sourced from Uniprot.org

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