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Mizushina, Y., Murakami, C., Yogi, K., Ueda, K., Ishidoh, T., Takemura, M., Perpelescu, M., Suzuki, M., Oshige, M., Yamaguchi, T., Saneyoshi, M., Yoshida, H., Sakaguchi, K. (2003). Kohamaic acid A, a novel sesterterpenic acid, inhibits activities of DNA polymerases from deuterostomes.  Biochim. Biophys. Acta 1648(1-2): 55--61.
FlyBase ID
FBrf0160798
Publication Type
Research paper
Abstract

We previously found and isolated a novel natural product, designated kohamaic acid A (KA-A), which inhibited the first cleavage of fertilized sea urchin eggs. In this paper, we report that this compound could selectively inhibit the activities of DNA polymerases (pol. alpha, beta, gamma, delta and epsilon ) only from species in the deuterostome branch in the animal kingdom, like sea urchin, fish and mammals, but not from protostomes including insects (fruit fly, Drosophila melanogaster) and mollusks (octopus and oyster). Inhibition of deuterostome DNA polymerases was dose dependent. IC(50) values for DNA polymerases of mammals and fish occurred at approximately 5.8-14.9 microM and those of sea urchin at 6.1-30.3 microM. In the sea urchin DNA polymerases, the activities of the replicative DNA polymerases such as alpha, delta and epsilon were more strongly inhibited than that of the repair-related pol. beta. KA-A is an inhibitor of replicative DNA polymerases from the deuterostome species, and subsequently, the inhibition of the first cleavage of fertilized sea urchin eggs might occur as a result of the suppression of DNA replication.

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    Language of Publication
    English
    Additional Languages of Abstract
    Parent Publication
    Publication Type
    Journal
    Abbreviation
    Biochim. Biophys. Acta
    Title
    Biochimica et Biophysica Acta
    Publication Year
    1947-
    ISBN/ISSN
    0006-3002
    Data From Reference
    Genes (4)