Calcium promoters

A Langmuir—Hinshelwood type of mechanism is also supported by the work of Klugherz and Harriott [178] and Spath and Handel [300], These authors, and several others, advocate 02 (and O2-) as the active oxygen species. Carberry et al. [74] and Forzatti et al. [118] contributed to the evidence for Oj with their results on the effect of promotors. 7-Irradiation of a calcium-promoted silver catalyst enhanced the yield of ethylene oxide. It could be shown that, during irradiation, calcium migrated to the surface, increasing the 02 concentration there. 

Yano, S., Tokumitsu, H. and Soderling, T. R., 1998, Calcium promotes cell survival through CaM-K kinase activation of the protein-kinase-B pathway, Nature, 396, pp 584—7. 

Actin is globular, MW 42,000 monomer binds MgATP ATP and calcium promote polymerization polymerizes as a two-stranded helix 6-7 nm across each subunit interacts with four adjacent ones monomer can be added or lost at either end encoded by multigene family. 

Although it is well accepted that the synergistic interaction between DAG and calcium is responsible for protein kinase C activation, the biochemical mechanisms that mediate this activation in vivo are complex. Several studies have demonstrated that cellular activation is accompanied by the translocation of protein kinase C from the cytosolic compartment to cellular membranes (e.g., Ganong et al., 1986). Increases in cytosolic calcium promote protein kinase C translocation to cellular membranes, and removal of calcium accelerates the dissociation of protein kinase C from cellular membranes in a process that appears to be modulated by ATP (Bell, 1986). 

Figure 7.2 Calcium is found in many foods. A diet rich in calcium promotes good health, including healthy teeth, bones, and nerve impulses.

Jiang, M., Hu, J., Wang, J. (2013). Calcium-promoted catalytic activity of potassium carbonate for steam gasification of coal char effect of hydrothermal pretreatment. Fuel, 109, 14-20. 

Spherical ammonia synthesis catalyst made by fusion of iron metal/magnetite with alumina, potassium, and calcium promoters. W. Wang, D. Feng, Y. Guo, and L. Li (Zhengzhou University). CN 85 01605 (1986). 

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