Regulation, cellular

One of these motifs, called the helix-turn-helix motif, is specific for DNA binding and is described in detail in Chapters 8 and 9. The second motif is specific for calcium binding and is present in parvalbumin, calmodulin, tro-ponin-C, and other proteins that bind calcium and thereby regulate cellular activities. This calcium-binding motif was first found in 1973 by Robert Kretsinger, University of Virginia, when he determined the structure of parvalbumin to 1.8 A resolution. 

In contemporary societies replete with various industries and automobiles, NO (NO, N02, and N03) has been recognized to be one of the important factors responsible for air pollution. Only two decades ago, NO was found to be an essential molecule that regulates cellular/molecular functions in mammals. NO is also enzymatically synthesized in nonmammals, invertebrates, and yeasts. Therefore, the origin of NO may date back to the birth of life arising from single cell organisms living around 3-billion years ago. 

Small GTPases are not isolated molecular switches regulating cellular processes. Signalling cascades within one subfamily as well as cross-talk between... 

One of the primary ways in which cold causes injury to cells is by the loss of the capability to regulate cellular volume. This occurs because of the decrease in the available energy (ATP) caused by hypothermia and ischemia which is needed by the membrane-bound ion pumps, the increased rate of leakage of ions through the plasma membrane, and the decreased activity of the membrane-bound ion pumps, especially the Na-pump. 

Regulate cellular response to viral infeetions and eaneer proliferation... 

Ruvolo PP Ceramide regulates cellular homeostasis via diverse stress signaling pathways. Leukemia 2001 15 1153. 

J ohnston LA, Prober DA, Edgar BA, Eisenman RN, Gallant P 1999 Drosophila myc regulates cellular growth during development. Cell 98 779-790 Leevers SJ 1999 All creatures great and small. Science 285 2082—2083... 

Bear, J. E., Krause, M. and Gertler, F. B. Regulating cellular actin assembly. Curr. Opin. Cell Biol. 13 158-166, 2001. 

Sunda, W. G. and Huntsman, S. A. (1998). Processes regulating cellular metal accumulation and physiological effects phytoplankton as model systems, Sci. Total Environ., 219, 165-181. 

Potassium, like sodium, is involved in ionic equilibria, and the opening and closing of sodium and potassium ion channels create the electrochemical gradients across cell membranes that transmit nerve impulses and other information and regulate cellular function. 

CtBP (carboxyl-terminal binding protein) participates in regulating cellular development and differentiation by associating with a diverse array of transcriptional... 

Growth hormone, or somatotropin, is a protein that stimulates linear body growth in children and regulates cellular metabolism in both adults and children. Growth hormone stimulates lipolysis, enhances production of free fatty acids, elevates blood glucose, and promotes... 

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