D'Eustachio P, Pravtcheva D, Marcu K, Ruddle F H
J Exp Med. 1980 Jun 1;151(6):1545-50. doi: 10.1084/jem.151.6.1545.
To determine the chromosomal location of mouse immunoglobulin heavy chain structural genes unambiguously, a panel of somatic cell hybrids was scored for the presence of DNA sequences homologous to gamma 2b-, mu-, and alpha-heavy chain-constant region DNA probe molecules. The hybrids, formed between mouse and hamster cells, contained various combinations of mouse chromosomes plus a full set of hamster chromosomes. Hybrids that retained mouse chromosome 12 reacted with the probes, whereas hybrids that had lost the chromosome, or its distal half, failed to react. These results indicate that structural genes for the gamma 2b-, mu-, and alpha-heavy chain-constant regions map to the distal half of this chromosome.
为了明确确定小鼠免疫球蛋白重链结构基因的染色体定位,对一组体细胞杂种进行了检测,以寻找与γ2b、μ和α重链恒定区DNA探针分子同源的DNA序列。这些杂种由小鼠细胞和仓鼠细胞形成,包含小鼠染色体的各种组合以及一整套仓鼠染色体。保留小鼠12号染色体的杂种与探针发生反应,而丢失该染色体或其远端一半的杂种则不发生反应。这些结果表明,γ2b、μ和α重链恒定区的结构基因定位于该染色体的远端一半。