Deduced primary structure of the alpha subunit of the GTP-binding stimulatory protein of adenylate cyclase.
Предсказанная первичная структура альфа-субъединицы стимулирующего GTP-связывающего белка аденилатциклазы
1986-03-01
SCID: 54.1/m9ppgchy
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GTP-binding regulatory proteinGs alpha subunitadenylate cyclasebovine adrenal cDNAtransducin homology
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Abstract (AI)
A bovine adrenal cDNA clone encoding the entire alpha subunit of the GTP-binding regulatory protein that stimulates adenylate cyclase (Gs) was isolated and sequenced. This cDNA directed the synthesis of the larger, 52-kDa form of the polypeptide in COS cells, even though the clone appeared to encode a 46-kDa protein. Comparison of the deduced amino acid sequence of Gs alpha with the alpha subunit of another G protein, transducin, revealed striking homologies.
Key Findings
1
A bovine adrenal cDNA clone encoding the complete alpha subunit of adenylate-cyclase-stimulating G protein (Gs) was isolated and sequenced.
2
The cDNA directed COS-cell synthesis of the larger 52-kDa Gs alpha form, despite apparently encoding a 46-kDa protein.
3
The deduced Gs alpha amino acid sequence showed striking homology with the alpha subunit of transducin.
4
The findings support substantial structural relatedness between distinct G-protein alpha subunits.
Research Object
the alpha subunit of the bovine GTP-binding stimulatory protein of adenylate cyclase (Gsα)
Research Subject
the deduced primary structure of Gsα, including its relationship to transducin alpha-subunit sequence homology and its apparent molecular-mass discrepancy
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1986-03-01
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