Methylglyoxal was a weak inhibitor of translation in the reticulocyte-lysate cell-free system and it did not display cap-dependent inhibition. A similar inhibition was obtained in a wheat-germ cell-free system that displayed extensive cap-dependent inhibition with the cap analogue 7-methylguanosine phosphate. These results show that the chemical reaction of methyl-glyoxat with 7-methylguanosine is not the mechanism for the inhibition of protein synthesis by methylglyoxal and that methylglyoxat is a weak general inhibitor of translation.

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