ATP-conducting maxi-anion channel: a new player in stress-sensory transduction.
The regulated release of ATP is a fundamental process in cell-to-cell signaling. The electrogenic translocation of ATP via an anion channel has been suggested as one possible mechanism of the release. In this review, we survey possible candidate channels for this pathway. The maxi-anion channel characterized by an exceedingly large unitary conductance has been a stray channel with regard to its function. A newly discovered property, its ATP conductivity and its activation in response to stress signals, indicates that this channel has a central role in stress-sensory transduction for cell volume regulation and tubuloglomerular feedback.
Sabirov
Ravshan Z
RZ
Department of Cell Physiology, National Institute for Physiological Sciences, Okazaki, 444-8585 Japan. okada@nips.ac.jp
Okada
Yasunobu
Y
D000255:Adenosine Triphosphate / Q000378:metabolism*; D000818:Animals; D000838:Anions; D048429:Cell Size; D006801:Humans; D015640:Ion Channel Gating / Q000502:physiology*; D007473:Ion Channels / Q000502:physiology*; D007678:Kidney Glomerulus / Q000502:physiology; D040542:Mechanotransduction, Cellular / Q000502:physiology; D009997:Osmotic Pressure; D018384:Oxidative Stress / Q000502:physiology*; D015398:Signal Transduction / Q000502:physiology*; D014882:Water-Electrolyte Balance / Q000502:physiology*
D000838:Anions; D007473:Ion Channels; D000255:Adenosine Triphosphate