Bone marrow ribonucleic acid polymerase. Effect of testosterone on nucleotide incorporation into nuclear RNA

Abstract
The incorporation of 3H-UTP into RNA by isolated rat bone marroui nuclri is stimulated by testosterone. This effect is hormone and tissue specific. Using α-amanitine and different ionic strenght conditions it was found that testosterons enhances preferentially RNA polymerase I activity. The sedimentation pattern of RNA isolated from bone marrow nuclei shows that the synthesis of RNA species within the 14–30 S range is mainly stimulated by the hormone