학술논문

Molecular analysis of chromosome-mediated gene transfer.
Document Type
Article
Source
Proceedings of the National Academy of Sciences of the United States of America; August 1979, Vol. 76 Issue: 8 p3987-3990, 4p
Subject
Language
ISSN
00278424; 10916490
Abstract
Metaphase chromosomes isolated from a cell line carrying the thymidine kinase (TK) gene of herpes simplex virus type I were used to transform the TK-deficient cell line LMTK- to the TK+ phenotype. Four independent transformants were isolated, all of which expressed virus-specific TK. Each of the four transformant cell lines initially became TK- at a rate of 12% per day. All four transformants possessed multiple copies of the TK gene and in one of the four a rearrangement occurred adjacent to the TK sequences. Stable TK+ derivatives of each line, isolated after prolonged cultivation, retained fewer copies of the TK gene than did their unstable parents. The transferred chromosomal fragment was larger than 17 kilobases in each line.