The adenylyl cyclase gene from Schizosaccharomyces pombe.

AUTOR(ES)

Young, D

RESUMO

We cloned the adenylyl cyclase gene from the fission yeast Schizosaccharomyces pombe using low-stringency hybridization to the Saccharomyces cerevisiae adenylyl cyclase gene. The Sc. pombe gene encodes a 1692-amino acid-residue protein. The identity of this gene was confirmed by studies of its expression in Sa. cerevisiae. Expression of the carboxyl-terminal region of the Sc. pombe adenylyl cyclase protein will suppress a temperature-sensitive mutation in the Sa. cerevisiae adenylyl cyclase gene. Furthermore, Sa. cerevisiae that lack their endogenous adenylyl cyclase gene and express the carboxyl-terminal region of the Sc. pombe adenylyl cyclase protein have measurable adenylyl cyclase activity. The carboxyl-terminal region of this protein has strong homology with the catalytic domain of the Sa. cerevisiae adenylyl cyclase. Also, Sc. pombe adenylyl cyclase, like Sa. cerevisiae adenylyl cyclase, contains a tandemly repeated motif rich in leucine. Neither yeast protein is particularly homologous to the recently cloned Gs-responsive mammalian adenylyl cyclase [Krupinski, J., Coussen, F., Bakalyar, H. A., Tang, W.-J., Feinstein, P. G., Orth, K., Slaughter, C., Reed, R. R. & Gilman, A. G. (1989) Science 244, 1558-1564].

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