The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Use a concentration of 1 - 5 µg/ml. Detects a band of approximately 180 kDa (predicted molecular weight: 166 kDa).
1/100. Perform heat mediated antigen retrieval before commencing with IHC staining protocol.
Use a concentration of 1 µg/ml.
Plays an essential role in the initiation of DNA replication. During the S phase of the cell cycle, the DNA polymerase alpha complex (composed of a catalytic subunit POLA1/p180, a regulatory subunit POLA2/p70 and two primase subunits PRIM1/p49 and PRIM2/p58) is recruited to DNA at the replicative forks via direct interactions with MCM10 and WDHD1. The primase subunit of the polymerase alpha complex initiates DNA synthesis by oligomerising short RNA primers on both leading and lagging strands. These primers are initially extended by the polymerase alpha catalytic subunit and subsequently transferred to polymerase delta and polymerase epsilon for processive synthesis on the lagging and leading strand, respectively. The reason this transfer occurs is because the polymerase alpha has limited processivity and lacks intrinsic 3' exonuclease activity for proofreading error, and therefore is not well suited for replicating long complexes.
Belongs to the DNA polymerase type-B family.
A 165 kDa form is probably produced by proteolytic cleavage at Lys-124.
Image courtesy of Human Protein Atlas ab31777 staining DNA polymerase alpha in human thyroid gland, showing a strong staining in nuclei of the glandular cells. Paraffin embedded human thyroid tissue was incubated with ab31777 (1/100 dilution) for 30 mins at room temperature. Antigen retrieval was performed by heat induction in citrate buffer pH 6.
ab31777 was tested in a tissue microarray (TMA) containing a wide range of normal and cancer tissues as well as a cell microarray consisting of a range of commonly used, well characterised human cell lines. Further results for this antibody can be found at www.proteinatlas.org
Abdel-Samad R et al. Mechanism of action of the atypical retinoid ST1926 in colorectal cancer: DNA damage and DNA polymerase a. Am J Cancer Res8:39-55 (2018).
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Kolinjivadi AM et al. Smarcal1-Mediated Fork Reversal Triggers Mre11-Dependent Degradation of Nascent DNA in the Absence of Brca2 and Stable Rad51 Nucleofilaments. Mol Cell67:867-881.e7 (2017).
Read more (PubMed: 28757209) »