tsBN75 and tsBN423, temperature-sensitive X-linked mutants of the BHK21 cell line, can be complemented by the ubiquitin-activating enzyme E1 cDNA

Hideo Nishitani, Hiroshige Goto, Sumiko Kaneda, Fumiaki Yamao, Takesi Seno, Patricia Handley, Alan L. Schwartz, Takeharu Nishimoto

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

tsBN75 and tsBN423 are independently isolated temperature-sensitive (ts) mutants of the BHK21 cell line for cell growth. Both tsBN75 and tsBN423 belong to the same complementation group and show G2 block at the nonpermissive temperature. Both were efficiently transformed to ts+ cells with the mouse and human cDNA encoding the ubiquitin-activating enzyme, E1. While no transformants of tsBN423 cells had a DNA content greater than the parental 2C, several ts+ transformants of tsBN75 cells acquired a multiploid DNA content. These data thus demonstrate the function of the human and mouse E1 cDNAs and further suggest that E1 functions in more than one step in cell cycle progression.

Original languageEnglish
Pages (from-to)1015-1021
Number of pages7
JournalBiochemical and Biophysical Research Communications
Volume184
Issue number2
DOIs
StatePublished - Apr 30 1992

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