DNA polymerase ? is a member of Y family of specialized DNA polymerases, encoded by skin cancer susceptibly gene POLH or XPV (xeroderma pigmentosum variant), mapped to human chromosome band 6p21.1-6p12. The gene with 11 exons, spanning whole coding sequence, does not contain TATA sequence in the upstream region of the transcription-initiation. DNA polymerase ? is a human homologue of the yeast Rad30 protein and it belongs to the damage-bypass replication protein family.
Synonyms: Anti-RAD30A; Anti-XP-V; Anti-polymerase (DNA directed), eta
Storage: -20C
Application: All Prestige Antibodies Powered by Atlas Antibodies are developed and validated by the Human Protein Atlas (HPA) project (www.proteinatlas.org)and as a result, are supported by the most extensive characterization in the industry. The Human Protein Atlas project can be subdivided into three efforts: Human Tissue Atlas, Cancer Atlas, and Human Cell Atlas. The antibodies that have been generated in support of the Tissue and Cancer Atlas projects have been tested by immunohistochemistry against hundreds of normal and disease tissues and through the recent efforts of the Human Cell Atlas project, many have been characterized by immunofluorescence to map the human proteome not only at the tissue level but now at the subcellular level. These images and the collection of this vast data set can be viewed on the Human Protein Atlas (HPA) site by clicking on the Image Gallery link. To view these protocols and other useful information about Prestige Antibodies and the HPA, visit sigma.com/prestige.
Biochem Physiol Actions: DNA polymerase ? (pol?) catalyzes an accurate trans-lesion DNA synthesis, suggesting that the XPV (xeroderma pigmentosum variant) gene encoding this protein has a role in tumor suppression in normal individuals. Mutation in this DNA polymerase leads to an inherited disorder called Xeroderma pigmentosum variant (XP-V). DNA polymerase ? plays a vital role in repairing UV-induced DNA damage by replacing the major UV-induced lesion with two adenines. DNA polymerase ? facilitates hypermutation of immunoglobulin variable genes.
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