People, Parasites, and Plowshares: Learning From Our Body's by Dickson D. Despommier

By Dickson D. Despommier

Dickson D. Despommier's shiny, visceral account of the biology, habit, and historical past of parasites follows the interaction among those attention-grabbing existence varieties and human society over hundreds of thousands of years. Despommier specializes in long term host-parasite institutions, that have developed to prevent or maybe subvert the human immune process. a few parasites do nice harm to their hosts, whereas others have signed one of those "peace treaty" in trade for his or her lengthy lives inside them. Many parasites additionally perform shrewdpermanent survival suggestions that scientific scientists desire to imitate as they look for remedies for Crohn's ailment, nutrition bronchial asthma, sort 1 diabetes, organ transplantation, and different clinical challenges.

Despommier concentrates on really extraordinary and infrequently hugely pathogenic organisms, describing their lifecycles and the mechanisms they use to prevent removal. He info their assault and survival plans and the character of the health problems they reason normally phrases, permitting readers of all backgrounds to scouse borrow a glimpse into the key paintings of such powerful invaders. He additionally issues to the cultural contexts within which those parasites thrive and experiences the present remedies to be had to defeat them. Encouraging scientists to proceed to review those organisms whether their risk is essentially contained, Despommier indicates how nearer dissection of the elements parasites produce to change our reaction to them may perhaps aid resolve a few of our most intricate scientific conundrums.

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Hu, P. D. Gershon, A. E. Hodel, and E A. Quiocho. mRNA cap recognition: dominant role of enhanced stacking interactions between methylated bases and protein aromatic side chains. Proc. Natl. Acad. Sci. USA 96, 49-54 (1999). 87. A. E. Hodel, P. D. Gershon, and E A. Quiocho. Structural basis for sequence-nonspecific recognition of 5'-capped mRNA by a cap-modifying enzyme. Mol. Cell. 1,443-447 (1998). 88. J. Marcotrigiano, A. Gingras, N. Sonenberg, and S, K. Burley. Cocrystal structure of the messenger RNA 5' cap-binding protein (elF4E) bound to 7-methyl-GDP.

Mutational analysis of the Saccharomyces cerevisiaeABD1 gene: cap methyltransferase activity is essential for cell growth. Mol. Cell. Biol. 16, 475-480 (1996). 15. S. P. Wang and S. Shuman. Structure-function analysis of the mRNA cap methyltransferase of Saccharomyces cerevisiae. J. Biol. Chem. 272, 14683-14689 (1997). 16. N. Saha, B. Schwer, and S. Shuman. Characterization of human, Schizosaccharomyces pombe and Candida albicans mRNA cap methyltransferases and complete replacement of the yeast capping apparatus by mammalian enzymes.

34 STEWARTSHUMAN Niewmierzycka and Clarke (83) also discern other methyltransferase motifs, including motif II (FPCDIVST in Abdlp) and motif III (SLKIGGHFFG in Abdlp). Motifs II and III are present in the cellular cap methyltransferases (Fig. 9). Although several of the conserved side chains that define motifs II and III have been subjected to alanine substitution in Abdlp, none of the residues analyzed are essential for Abdlp function in vivo. Thus, motifs II and III are unlikely to contribute directly to catalysis by Abdlp.

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