猪鹿和白唇西貒中18S、5.8S和28S核糖体RNA基因以及5S核糖体RNA基因的定位

Localization of the 18S, 5.8S and 28S rRNA genes and the 5S rRNA genes in the babirusa and the white-lipped peccary.

作者信息

Zijlstra C, Mellink C H, de Haan N A, Bosma A A

机构信息

Department of Cell Biology and Histology, Faculty of Veterinary Medicine, Utrecht University, The Netherlands.

出版信息

Cytogenet Cell Genet. 1997;77(3-4):273-7. doi: 10.1159/000134596.

DOI:10.1159/000134596

PMID:9284936

Abstract

The locations of the genes encoding 18S, 5.8S and 28S rRNA and 5S rRNA were studied in two relatives of the domestic pig, the babirusa (Babyrousa babyrussa) and the white-lipped peccary (Tayassu pecari). In the babirusa, the 18S, 5.8S and 28S rDNA is located on chromosomes 6, 8 and 10. The genes on chromosomes 8 and 10 are actively transcribed, in contrast to those on chromosomes 6. In the white-lipped peccary, this rDNA was found to be located on chromosomes 4 and 8. The genes on both of these pairs of chromosomes are actively transcribed. The 5S rDNA was physically mapped to chromosome 16 in the babirusa, and to chromosome 11 in the white-lipped peccary. These data are compared to similar data obtained for the domestic pig, and confirm previously recognized chromosome homologies.

摘要

对家猪的两个近亲——鹿豚（Babyrousa babyrussa）和白唇西貒（Tayassu pecari）中编码18S、5.8S和28S rRNA以及5S rRNA的基因位置进行了研究。在鹿豚中，18S、5.8S和28S rDNA位于6号、8号和10号染色体上。与6号染色体上的基因不同，8号和10号染色体上的基因处于活跃转录状态。在白唇西貒中，发现这种rDNA位于4号和8号染色体上。这两对染色体上的基因均处于活跃转录状态。5S rDNA在鹿豚中定位到16号染色体，在白唇西貒中定位到11号染色体。将这些数据与家猪的类似数据进行比较，证实了先前公认的染色体同源性。