Figure 4: Coherence of mRNA stability in physiological systems. The range of half-lives, from 0 to more than 45 min, was continuously color-coded with a green-yellow-red gradient (green = shortest half-lives, red = longest half-lives). For protein complexes with multiple subunits, smaller blocks were individually color-coded to represent the mRNA half-lives for each subunit. White boxes represent transcripts for which we did not obtain an adequate measurement of decay. mRNA turnover in: (A) central energy metabolism systems (B) the pheromone signal transduction pathway (C) translation factors