Here is part of a diagram redrawn from Berridge's 1985 Scientific American paper on intracellular communication. Draw a corrected diagram for receptor and G-protein taking into account present knowledge about membrane localization and subunit structure. In other words, compare location of action and molecule with which cAMP interacts. What molecule mediates the calcium dependence of the potassium channel of Paramecium . Describe the neurotransmitter ligand channel.
Carbon monoxide is synthesized from heme.
In the somatic motor system, the nicotinic receptor is at the end plate. Stock et al. propose that cheY is analogous to ras. Give an example of a ligand-gated channel gated from the inside of the cell.