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ECB-ART-30428
Nucleic Acids Res 1978 Oct 01;510:3945-57. doi: 10.1093/nar/5.10.3945.
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DNA polymerase alpha and beta in the California urchin.

Racine FM , Morris PW .


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DNA polymerase alpha and beta were identified in the urchin, Strongylocentrotus purpuratus. The DNA polymerase beta sedimented at 3.4 S, constituted 5% of total DNA polymerase activity, and was resistant to N-ethylmaleimide and high ionic strength. The polymerase alpha sedimented at 6--8 S, was inhibited by N-ethylmalemide or 0.1 M (NH4)2SO4, and was dependent upon glycerol for preservation of activity. Both the polymerases alpha and beta were nuclear associated in embryos. The DNA polymerase alpha was markedly heterogeneous on DEAE-Sephadex ion exchange and showed three modal polymerase species. These polymerase alpha species were indistinguishable by template activity assays but the DNA polymerase associated ribonucleotidyl transferase (Biochemistry 75 : 3106-3113, 1976) was found predominantly with only one of the DNA polymerase alpha species.

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Genes referenced: LOC115923832 polb polr3a

References [+] :
APOSHIAN, Enzymatic synthesis of deoxyribonucleic acid. IX. The polymerase formed after T2 bacteriophage infection of Escherichia coli: a new enzyme. 1962, Pubmed