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Gene Review

ACXB  -  CG17174 gene product from transcript...

Drosophila melanogaster

Synonyms: AC, AC34A, Ac34A, CG17174, DACXB, ...
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Disease relevance of ACXB

  • The more prolonged receptor-mediated changes in adenylyl cyclase activity are generated by an independent G-protein-coupled pathway that is pertussis toxin-sensitive but calcium-independent, and Gbetagamma-subunits appear to be involved in the transduction of this response [1].

High impact information on ACXB

  • Involvement of the cAMP cascade in Drosophila learning and memory is suggested by the aberrant behavioral phenotypes of the mutants dunce (cAMP phosphodiesterase) and rutabaga (adenylyl cyclase) [2].
  • This is the first evidence for the direct coupling of a cloned D1-like dopamine receptor both to the activation of adenylyl cyclase and to the initiation of an intracellular Ca2+ signal [1].
  • Evidence from systems as diverse as mollusks, insects and mammals has revealed that adenylyl cyclase, cyclic adenosine 3',5'-monophosphate (cAMP) cascade, cAMP-dependent protein kinases and their substrates are required for the cellular events underlying the short-term and long-term forms of memory [3].
  • We have generated transgenic mice in which the expression of a constitutively active form of G(s)alpha (G(s)alpha* Q227L), the G protein that stimulates adenylyl cyclase activity, is driven in neurons within the forebrain by the promoter from the CaMKIIalpha gene [4].
  • Despite significantly increased adenylyl cyclase activity, G(s)alpha* transgenic mice exhibit PKA-dependent decreases in levels of cAMP due to a compensatory up-regulation in phosphodiesterase activity [4].

Associations of ACXB with chemical compounds


Regulatory relationships of ACXB

  • The dunce (dnc) and rutabaga (rut) mutations of Drosophila affect a cAMP-dependent phosphodiesterase and a Ca(2+)/CaM-regulated adenylyl cyclase, respectively [6].
  • Since amnesiac encodes peptides that enhance adenylyl cyclase activity, these studies suggest the importance of the cAMP signaling pathway in AMI in Drosophila, a finding consistent with several models of AMI in mammals [7].


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