title: ASSOCIATION OF RAPIDLY METABOLIZED DNA AND RNA.
abstract: An association of rapidly metabolized DNA and RNA labeled with P(32) has been found in peanut cotyledons by incorporation of either uridine-C(14) or thymidine-C(14) by peanut cotyledon slices. Chromatography of the extracted nucleic acids on methylated- albumin columns shows that the rapidly metabolized DNA and RNA are contained only in the first half of the DNA peak where RNA and DNA occur in equal amount. One-fourth of the radioactivity is recovered in ribonuc'eotides. Density-gradient centrifugation in cesium chloride indicates that the material containing the P(32) has a higher density than most of the DNA.
mesh_terms: D002247:Carbon Isotopes; D002499:Centrifugation, Density Gradient; D004247:DNA; D008660:Metabolism; D009705:Nucleosides; D010759:Phosphorus Isotopes; D010945:Plants, Edible; D012313:RNA; D012106:Research; D013936:Thymidine; D014529:Uridine
chemical_list: D002247:Carbon Isotopes; D009705:Nucleosides; D010759:Phosphorus Isotopes; D012313:RNA; D004247:DNA; D013936:Thymidine; D014529:Uridine
keywords: CARBON ISOTOPES; DNA; EXPERIMENTAL LAB STUDY; METABOLISM; NUCLEOSIDES; PHOSPHORUS ISOTOPES; PLANTS, EDIBLE; RNA; THYMIDINE