ArticleAlcoholism, clinical and experimental research2011
Effects of alcohols on recombinant adenylyl cyclase type 7 expressed in bacteria.
Article in Alcoholism, clinical and experimental research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 6 citations in OpenAlex.
- Physiological roles of mammalian transmembrane adenylyl cyclase isoforms.Physiological reviews · 2022Review
- The effect of alcohol on recombinant proteins derived from mammalian adenylyl cyclase.Biochemistry and biophysics reports · 2017Article
- International Union of Basic and Clinical Pharmacology. CI. Structures and Small Molecule Modulators of Mammalian Adenylyl Cyclases.Pharmacological reviews · 2017Review
- Real-time monitoring of intracellular cAMP during acute ethanol exposure.Alcoholism, clinical and experimental research · 2013Article
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3 authors at 1 institution in 1 country.
Funding
Abstract
backgroundOur previous studies showed that ethanol enhanced the activity of adenylyl cyclase (AC) in an isoform-specific manner and that alcohol cutoff point of AC was isoform specific. Recently, we showed that 2,3-butanediol inhibited AC type 7 (AC7) activity in a stereoisomer-specific manner and that this inhibition was also AC isoform specific. These observations strongly suggest that a major target of alcohol action on cAMP signaling is AC. We hypothesized that alcohols exhibit their effect on AC activity by direct interaction with AC proteins. However, experimental systems employed in past studies such as intact cells and membrane preparations are too complex and do not allow us to unequivocally test this hypothesis. In attempt to bypass, these complications of the membrane-bound AC, we decided to study the effect of alcohols on AC recombinant proteins expressed in bacteria.
methodsA recombinant AC, designated as AC7sol, consisting of the C(1a) and C(2) domains of the human AC7 was designed and expressed in bacteria. The activity of AC7sol was examined using lysate prepared from bacteria expressing AC7sol.
resultsThe activity of AC7sol was stimulated by manganese or by the α subunit of G protein that stimulates AC (G(sα) ). Forskolin by itself did not stimulate the activity of AC7sol. However, in the presence of activated G(sα) , forskolin stimulated the activity of AC7sol. A series of n-alkanols including ethanol enhanced the manganese-stimulated activity of AC7sol. The alcohol cutoff point of AC7sol was pentanol. Ethanol and butanol increased V(max) and K(M) values of AC7sol.
conclusionsThese results are consistent with our hypothesis and suggest that the enhancing effect of alcohols on AC activity is because of the increase in turnover number of AC. The current study demonstrates for the first time that the effect of alcohols requires only the C(1a) and C(2) domains of AC and no other domains of AC as well as no other mammalian proteins.
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