Subcellular localization, phenylpropanoid

Phenylpropanoid Pathway, Subcellular Localization, and Metabolic Channeling 509... 

Figure 21.4 Phenylpropanoid and (iso)flavonoid pathway topology, subcellular localization and transport mechanisms. (Adapted from Winkel-Shirley, [2004], Kitamura, [2006] and Marinova et al. [2007b].)...

Chen, J.-Y., Wen, P.-R, Kong, W.-R, Pan, Q.-H., Wan, S.-B. Huang, W.-D. (2006). Changes and subcellular localizations of the enzymes involved in phenylpropanoid metabolism during grape berry development. Journal of Plant Physiology, 163, 115-127. 

At the subcellular level, STS is predominantly found within vesicles, along the plasma membrane and in the cell walls, suggesting a protein secretion pathway toward the apoplast compartment. Also, STS localization in exocarp cell walls is consistent with its role in synthesizing defense compounds and suggests that a differential localization of phenylpropanoid biosynthetic machinery regulates the deposition of specific secondary products at different action sites within the cells ([19] and references therein). 

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