|
|
|
||||
| Home Help Feedback Subscriptions Archive Search Table of Contents | |||||
Journal of Cell Science, Vol 43, Issue 1 59-74, Copyright © 1980 by Company of Biologists
JOURNAL ARTICLES |
J Frankel, J Mohler and AK Frankel
Temperature-sensitive periods were determined by application of temperature shifts and shocks to 3 temperature-sensitive cell division arrest (cda) mutants of Tetrahymena thermophila. A restrictive temperature, 36 degrees C, was found at which all 3 mutants are fully penetrant, yet other physiological effects are minimal. At this temperature, the temperature-sensitive period of cdaC2 is a unique 5-min period in mid-division, that of cdaA1 is a similarly brief period situated about 0.5 h prior to cell division, while the temperature-sensitive period of cdaH1 is 20 to 30 min long and immediately precedes cell division. These periods either coincide with (cdaC2, cdaH1) or immediately precede (cdaA1) the onset of phenotypic abnormality at the restrictive temperature. Brief exposure to 36 degrees C during the temperature-sensitive period in any of these mutants brings about irreversible arrest of division furrows in progress or preparation. Mutant cells suffering such arrest can, however, divide again at a permissive temperature by forming new furrows at different sites.
This article has been cited by other articles:
![]() |
J. Frankel What Do Genic Mutations Tell Us about the Structural Patterning of a Complex Single-Celled Organism? Eukaryot. Cell, October 1, 2008; 7(10): 1617 - 1639. [Full Text] [PDF] |
||||
![]() |
N. E. Williams, C.-C. Tsao, J. Bowen, G. L. Hehman, R. J. Williams, and J. Frankel The Actin Gene ACT1 Is Required for Phagocytosis, Motility, and Cell Separation of Tetrahymena thermophila Eukaryot. Cell, March 1, 2006; 5(3): 555 - 567. [Abstract] [Full Text] [PDF] |
||||
![]() |
K Gonda, M Katoh, K Hanyu, Y Watanabe, and O Numata Ca(2+)/calmodulin and p85 cooperatively regulate an initiation of cytokinesis in Tetrahymena J. Cell Sci., January 11, 1999; 112(21): 3619 - 3626. [Abstract] [PDF] |
||||