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Invitrogen
POLQ Polyclonal Antibody
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Product Details
PA5-49771
Applications
Tested Dilution
Publications
Product Specifications
Species Reactivity
Mouse
Published species
Human
Host/Isotype
Rabbit
/ IgG
Class
Polyclonal
Type
Antibody
Immunogen
Synthesized peptide derived from internal of human DNA Polymerase theta (aa 181-230).
Conjugate
Form
Liquid
Concentration
1 mg/mL
Purification
Antigen affinity chromatography
Storage buffer
PBS, pH 7.4, with 50% glycerol
Contains
0.02% sodium azide
Storage conditions
-20°C
Shipping conditions
Ambient (domestic); Wet ice (international)
RRID
Product Specific Information
The antibody detects endogenous levels of total DNA Polymerase theta protein.
Target Information
DNA polymerase that promotes microhomology-mediated end-joining (MMEJ), an alternative non-homologous end-joining (NHEJ) machinery triggered in response to double-strand breaks in DNA (PubMed:25642963, PubMed:25643323). 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 (PubMed:25642963, PubMed:25643323). POLQ acts as an inhibitor of homology-recombination repair (HR) pathway by limiting RAD51 accumulation at resected ends (PubMed:25642963). POLQ-mediated MMEJ may be required to promote the survival of cells with a compromised HR repair pathway, thereby preventing genomic havoc by resolving unrepaired lesions. 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 (PubMed:25643323). The polymerase activity is highly promiscuous: unlike most polymerases, promotes extension of ssDNA and partial ssDNA (pssDNA) substrates (PubMed:18503084, PubMed:21050863, PubMed:22135286). Also exhibits low-fidelity DNA synthesis, translesion synthesis and lyase activity, and it is implicated in interstrand-cross-link repair, base excision repair and DNA end-joining (PubMed:14576298, PubMed:18503084, PubMed:19188258, PubMed:24648516). 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. [UniProt]
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Bioinformatics
Protein Aliases: Chromosome aberrations occurring spontaneously protein 1; DNA polymerase eta; DNA polymerase theta; EC 2.7.7.7
Gene Aliases: A430110D14Rik; Chaos1; Polq
UniProt ID: (Mouse) Q8CGS6
Entrez Gene ID: (Mouse) 77782
DNA replication
DNA-dependent DNA replication
DNA repair
base-excision repair
double-strand break repair
cellular response to DNA damage stimulus
somatic hypermutation of immunoglobulin genes
protein homooligomerization
DNA biosynthetic process
double-strand break repair via alternative nonhomologous end joining
negative regulation of double-strand break repair via homologous recombination
Performance Guarantee
If an Invitrogen™ antibody doesn't perform as described on our website or datasheet,we'll replace the product at no cost to you, or provide you with a credit for a future purchase.*
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