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What is 1 + 3?
gap junctions and cell-cell recognition (proteins for binding)
local signal, long distance, signal transduction pathway
paracrine and synaptic
around the sound (growth factor)
nervous (neuro transmitter)
signal transfuction pathway
reception, intracellular transduction, and cellular response
ligan (signaling molecule) and reception (membrane protein)
kinase (add phosphate group - phophoylation) (remove phosphate group - dephosphorylation)
cell service receptors
g-protein, tyrosine kinase, ion channel