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POLD2
Anti-POLD2 Recombinant Antibody Products
- Anti-POLD2 Immunohistochemistry Kit (VS-0325-XY1689)
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- Species Reactivity: Human, Mouse, Rat
- Target: POLD2
- Application: IHC
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For Research Use Only. Not For Clinical Use.
This gene encodes the 50-kDa catalytic subunit of DNA polymerase delta. DNA polymerase delta possesses both polymerase and 3 to 5 exonuclease activity and plays a critical role in DNA replication and repair. The encoded protein is required for the stimulation of DNA polymerase delta activity by the processivity cofactor proliferating cell nuclear antigen (PCNA). Expression of this gene may be a marker for ovarian carcinomas. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene, and a pseudogene of this gene is located on the long arm of chromosome 5. [provided by RefSeq, Mar 2012]
Protein class
Metabolic proteins, Plasma proteins
Predicted location
Intracellular
Single cell type specificity
Cell type enhanced (Late spermatids)
Immune cell specificity
Low immune cell specificity
Cell line specificity
Low cell line specificity
Interaction
Component of both the DNA polymerase delta and DNA polymerase zeta complexes (PubMed:22801543, 17317665, 24449906). Component of the tetrameric DNA polymerase delta complex (Pol-delta4), which consists of POLD1/p125, POLD2/p50, POLD3/p66/p68 and POLD4/p12, with POLD1 bearing DNA polymerase and 3' to 5' proofreading exonuclease activities (PubMed:22801543, 17317665). Within Pol-delta4, directly interacts with POLD1, POLD3 and POLD4 (PubMed:11328591, 16510448). Following stress caused by DNA damaging agents or by replication stress, POLD4 is degraded and Pol-delta4 is converted into a trimeric form of the complex (Pol-delta3), which consists of POLD1, POLD2 and POLD3. Pol-delta3 is the major form occurring at S phase replication sites, as well as DNA damage sites (PubMed:22801543, 17317665). Also observed as a dimeric complex with POLD2 (Pol-delta2 complex). Pol-delta2 is relatively insensitive to the PCNA stimulation (2-5-fold) compared to Pol-delta4 that is stimulated by over 50-fold (PubMed:12403614). Contrary to the other components of Pol-delta4, does not directly interact with PCNA (PubMed:12403614, 16510448). As POLD1 and POLD4, directly interacts with WRNIP1; this interaction stimulates DNA polymerase delta-mediated DNA synthesis, independently of the presence of PCNA. This stimulation may be due predominantly to an increase of initiation frequency and also to increased processivity (PubMed:15670210). Directly interacts with POLDIP2 and POLDIP3 (PubMed:12522211). Directly interacts with KCTD13/PDIP1; in the presence of PCNA, this interaction may stimulate DNA polymerase activity (PubMed:11593007). Component of the tetrameric Pol-zeta complex (Pol-zeta4), which consists of REV3L, MAD2L2, POLD2 and POLD3, with REV3L bearing DNA polymerase catalytic activity (PubMed:24449906). Interacts with KCTD10 (By similarity).
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