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- W2010481489 abstract "PHYLPA, a unique Physarum lysophosphatidic acid (LPA), showed selective inhibition of a family of DNA polymerase α, including DNA polymerases α, δ and ε; but no inhibition of DNA polymerase β or γ was observed. To reveal the molecular mechanism of inhibition of DNA polymerases by PHYLPA, four stereoisomers and some other derivatives were synthesized and their effects on DNA polymerases were studied. Among eight derivatives synthesized, PHYLPA-1 (the natural PHYLPA; sodium 1- O [(9′ S, 10′ R )-9′, 10′-methanohexadecanoyl]- sn -glycerol 2,3-cyclic phosphate) and PHYLPA-2 ( sodium 3-0-[(9′ S, 10′ R )-9′, 10′-methanohexadecanoyl]- sn -glycerol 1,2-cyclic phosphate) were strong and specific inhibitors of a family of DNA polymerase a. But their stereoisomers PHYLPA-3 (sodium 1-0-[(9′ R , 10′ S )-9′, 10′-methanohexadecanoyl]- sn -glycerol 2,3-cyclic phosphate) and PHYLPA-4 (sodium 3- O -[(9′ R , 10′ S )-9′, 10′-methanohexadecanoyl- sn -glycerol 1,2-cyclic phosphate) were weak inhibitors, showing the critical importance of stereochemistry of a cyclopropane-containing fatty acid for the inhibitory activity. Some derivatives having no cyclopropane-containing fatty acids — palmitoyl-, oleoyl-, and palmitoleoyl-PHYLPA -showed inhibition to some extent; but 1-palmytoyl and 1-oleoyl lysophosphatidic acid, which has no cyclic phosphate, did not show an apparent inhibitor activity on DNA polymerases. Hence, the extent of the inhibition apparently depends on the stereochemistry of both the fatty acid moiety and the cyclic phosphate." @default.
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- W2010481489 date "1995-08-01" @default.
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- W2010481489 title "Selective inhibition of DNA polymerase-α family with chemically synthesized derivatives of PHYLPA, a unique Physarum lysophosphatidic acid" @default.
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- W2010481489 doi "https://doi.org/10.1016/0005-2760(95)00097-v" @default.
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