Figure 4.

Functional classification of the identified proteins involved in each of the four defined clusters. Proportions of the main functional categories in the four main clusters defined in Figure 3. The number of identified spots included in each category is indicated in parentheses. A developmental scale is indicated on the left. M, Metabolism; PS, protein synthesis; E, energy; T, transcription; IT, intracellular transport; IH, ionic homeostasis; CC, cellular communication, signal transduction; CG, cell growth, cell division, and DNA synthesis; CO, cellular organization; CR, cell rescue, defense, cell death, and aging; D, development; PD, protein destination.