Translation coordination with transcription

The regulation of the synthesis of the polypeptides of PS II appears to be particularly complex, with evidence for regulation at transcriptional, translational and post-translational levels. The synthesis of the individual polypeptides does not appear to be tightly coordinated, with certain polypeptides accumulating in the absence of other PS II polypeptides under a variety of experimental conditions. The synthesis of a functional PS II complex is strongly dependent on light, both for its effect on the transcription of PS II genes and for its absolute requirement for Chi synthesis. 

In vivo elastin fiber formation requires the coordination of a number of important processes. These include the control of intracellular transcription and translation of tropoelastin, intracellular processing of the protein, secretion of the protein into the extracellular space, delivery of tropoelastin monomers to sites of elastogenesis, alignment of the monomers with previously accreted tropoelastin through associating microfibrillar proteins, and finally, the conversion to the insoluble elastin polymer through the crosslinking action of lysyl oxidase (Fig. 2). 

Zinc is an essential component of a large number of enzymes. Zinc-containing enzymes are involved in the synthesis and degradation of major metabolites, and serve to regulate the replication, transcription, and translation of genetic material. In some proteins zinc binds with a coordination number of 4 to sulfur and nitrogen, while in others in which it also binds oxygen the coordination number is S or 6. 

---