Sherr C J, Uhr J W
Proc Natl Acad Sci U S A. 1970 Aug;66(4):1183-9. doi: 10.1073/pnas.66.4.1183.
Mouse myeloma cells pulse-labeled in vitro with (3)H-leucine or (3)H-glucosamine were fractionated on sucrose gradients, and membrane-bound and free polyribosomes were separated. Nascent polypeptides released from polyribosomes were precipitated with antiserum specific for mouse immunoglobulin. The results indicate that immunoglobulin is synthesized preferentially by bound polyribosomes.
用³H-亮氨酸或³H-葡萄糖胺在体外进行脉冲标记的小鼠骨髓瘤细胞,在蔗糖梯度上进行分级分离,从而分离出膜结合型和游离型多核糖体。从多核糖体释放的新生多肽用针对小鼠免疫球蛋白的抗血清沉淀。结果表明,免疫球蛋白优先由结合型多核糖体合成。