INDUCIBLE CELL ABLATION IN DROSOPHILA BY COLD-SENSITIVE RICIN-A CHAIN
UNSPECIFIED. (1992) INDUCIBLE CELL ABLATION IN DROSOPHILA BY COLD-SENSITIVE RICIN-A CHAIN. DEVELOPMENT, 114 (3). 681-&. ISSN 0950-1991Full text not available from this repository.
We have developed a system for temperature-inducible killing of specific cells in the fruitfly Drosophila melanogaster. The system overcomes many of the limitations of existing cell ablation methods and is in principle applicable to any non-homeothermic eukaryote. Temperature-sensitive and cold-sensitive mutations in the ricin toxin A chain (RTA) of castor bean were generated in yeast. One cold-sensitive mutation, RAcs2, produced temperature-dependent ablation of eye cells in Drosophila when expressed under control of the eye-specific sev enhancer. At 29-degrees-C, cell death was observed within 7 hours in the developing eye and no obvious toxic effects were observed elsewhere; at 18-degrees-C, extremely low toxicity was observed. DNA sequencing of RAcs2 revealed a single amino acid substitution in the RTA active site cleft.
|Item Type:||Journal Article|
|Subjects:||Q Science > QH Natural history > QH301 Biology|
|Journal or Publication Title:||DEVELOPMENT|
|Publisher:||COMPANY OF BIOLOGISTS LTD|
|Official Date:||March 1992|
|Number of Pages:||0|
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