title: A specific dimerization of rabbit beta-globin messenger ribonucleic acid.
abstract: Rabbit globin mRNA, when layered in low salt on 0.1 M-NaCl/sucrose gradients, separates into two peaks of material. Translation of these two RNA fractions in the wheat-germ cell-free system, hybridization against globin complementary DNA (cDNA) and cross-hybridization against cDNA species prepared from each fraction show that the first peak sedimenting at 10S is a alpha-globin mRNA and the second peak, sedimenting at approx. 15S, is beta-globin mRNA. The sedimentation rate of the beta-globin mRNA is concentration-dependent. By changing concentration and pH, it is indicated that in low-salt beta-globin mRNA adopts a conformation that leads to specific, but weak, self-dimerization during centrifugation in 0.1M-NaCl. This property permits rapid preparation of intact and relatively pure alpha- and beta-globin mRNA species.
mesh_terms: D000818:Animals; D002499:Centrifugation, Density Gradient; D004247:DNA; D005914:Globins; D006863:Hydrogen-Ion Concentration; D046911:Macromolecular Substances; D009693:Nucleic Acid Hybridization; D014176:Protein Biosynthesis; D012333:RNA, Messenger / Q000302:isolation & purification*; D011817:Rabbits
chemical_list: D046911:Macromolecular Substances; D012333:RNA, Messenger; D005914:Globins; D004247:DNA