4 results
Contributors
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- By Louise B. Andrew, Jane C. Ballantyne, Sadek Beloucif, David Clendenin, Maliha A. Darugar, Joanna M. Davies, Michael DeVita, Denise M. Dudzinski, Bernice Elger, Monica Escher, Joel E Frader, Kelly Fryer-Edwards, James Giordano, Allen Gustin, Rebecca M. Harris, Gerhard Höver, Steven K. Howard, Carl C. Hug, Samia Hurst, Steven Jackson, Nancy S. Jecker, Jonathan D Katz, Joseph Klein, W. Andrew Kofke, Ruth Landau, Craig D. McClain MD, Alex Mauron, Kelly N. Michelson, Cynthiane J. Morgenweck, William Notcutt, Michael Nurok, Susan K. Palmer, Joan G. Quaine, Michael A. Rie, Stanley H. Rosenbaum, David M. Rothenberg, Robert B. Schonberger, Mark D. Siegel, Jeffrey H. Silverstein, Murali Sivarajan, Karen Souter MD, Thomas Specht MD, Andrea Trescot, Gail A. Van Norman, A.M. Viens, Elizabeth K. Vig, David B. Waisel, Clarence Ward, James M. West, Richard L Wolman, Steve Yentis
- Edited by Gail A. Van Norman, University of Washington, Stephen Jackson, Stanley H. Rosenbaum, Susan K. Palmer
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- Book:
- Clinical Ethics in Anesthesiology
- Published online:
- 05 March 2012
- Print publication:
- 28 October 2010, pp xi-xiv
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Contributors
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- By Shamsuddin Akhtar, Greg Albert, Sidney Allison, Muhammad Anwar, Haruo Arita, Amanda Barker, Mary Hanna Bekhit, Jeanna Blitz, Tyson Bolinske, David Burbulys, Asokumar Buvanendran, Gregory Cain, Keith A. Candiotti, Daniel B. Carr, Derek Chalmers, John Charney, Rex Cheng, Roger Chou, Keun Sam Chung, Anna Clebone, Frederick Conlin, Susan Dabu-Bondoc, Tiffany Denepitiya-Balicki, Jeanette Derdemezi, Anahat Kaur Dhillon, Ho Dzung, Juan Jose Egas, Stephen M. Eskaros, Zhuang T. Fang, Claudia R. Fernandez Robles, Victor A. Filadora, Ellen Flanagan, Dan Froicu, Allison Gandey, Nehal Gatha, Boris Gelman, Christopher Gharibo, Muhammad K. Ghori, Brian Ginsberg, Michael E. Goldberg, Jeff Gudin, Thomas Halaszynski, Martin Hale, Dorothea Hall, Craig T. Hartrick, Justin Hata, Lars E. Helgeson, Joe C. Hong, Richard W. Hong, Balazs Horvath, Eric S. Hsu, Gabriel Jacobs, Jonathan S. Jahr, Rongjie Jaing, Inderjeet Singh Julka, Zeev N. Kain, Clinton Kakazu, Kianusch Kiai, Mary Keyes, Michael M. Kim, Peter G. Lacouture, Ryan Lanier, Vivian K. Lee, Mark J. Lema, Oscar A. de Leon-Casasola, Imanuel Lerman, Philip Levin, Steven Levin, JinLei Li, Eric C. Lin, Sharon Lin, David A. Lindley, Ana M. Lobo, Marisa Lomanto, Mirjana Lovrincevic, Brenda C. McClain, Tariq Malik, Jure Marijic, Joseph Marino, Laura Mechtler, Alan Miller, Carly Miller, Amit Mirchandani, Sukanya Mitra, Fleurise Montecillo, James M. Moore, Debra E. Morrison, Philip F. Morway, Carsten Nadjat-Haiem, Hamid Nourmand, Dana Oprea, Sunil J. Panchal, Edward J. Park, Kathleen Ji Park, Kellie Park, Parisa Partownavid, Akta Patel, Bijal Patel, Komal D. Patel, Neesa Patel, Swati Patel, Paul M. Peloso, Danielle Perret, Anthony DePlato, Marjorie Podraza Stiegler, Despina Psillides, Mamatha Punjala, Johan Raeder, Siamak Rahman, Aziz M. Razzuk, Maggy G. Riad, Kristin L. Richards, R. Todd Rinnier, Ian W. Rodger, Joseph Rosa, Abraham Rosenbaum, Alireza Sadoughi, Veena Salgar, Leslie Schechter, Michael Seneca, Yasser F. Shaheen, James H. Shull, Elizabeth Sinatra, Raymond S. Sinatra, Neil Singla, Neil Sinha, Denis V. Snegovskikh, Dmitri Souzdalnitski, Julie Sramcik, Zoreh Steffens, Alexander Timchenko, Vadim Tokhner, Marc C. Torjman, Co T. Truong, Nalini Vadivelu, Ashley Vaughn, Anjali Vira, Eugene R. Viscusi, Dajie Wang, Shu-ming Wang, J. Michael Watkins-Pitchford, Steven J. Weisman, Ira Whitten, Bryan S. Williams, Jeremy M. Wong, Thomas Wong, Christopher Wray, Yaw Wu, Anthony T. Yarussi, Laurie Yonemoto, Bita H. Zadeh, Jill Zafar, Martha Zegarra, Keren Ziv
- Edited by Raymond S. Sinatra, Jonathan S. Jahr, University of California, Los Angeles, School of Medicine, J. Michael Watkins-Pitchford
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- Book:
- The Essence of Analgesia and Analgesics
- Published online:
- 06 December 2010
- Print publication:
- 14 October 2010, pp xi-xviii
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The relationship of thermodynamic stability at a G[bull ]U recognition site to tRNA aminoacylation specificity
- PETER STRAZEWSKI, EWA BIALA, KAY GABRIEL, WILLIAM H. McCLAIN
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The G[bull ]U pair at the third position in the acceptor helix of Escherichia coli tRNAAla is critical for aminoacylation. The features that allow G[bull ]U recognition are likely to include direct interaction of alanyl-tRNA synthetase with distinctive atomic groups and indirect recognition of the structural and stability information encoded in the sequence of G[bull ]U and its immediate context. The present work investigates the thermodynamic stability and acceptor activity for a comprehensive set of variant RNAs with substitutions of the G[bull ]U pair of E. coli tRNAAla. The four RNAs with Watson–Crick substitutions had a lower acceptor activity and a higher stability relative to the G[bull ]U RNA. On the other hand, the RNAs with mispair substitutions had a lower stability, but either a higher or a lower acceptor activity. Thus, the entire set of variant RNAs does not exhibit a correlation between thermodynamic stability of the free, unbound tRNA and its acceptor activity. The substantial acceptor activity of tRNAs with particular mispair substitutions may be explained by their ability to assume the conformational preferences of alanyl–tRNA synthetase. Moreover, the G[bull ]U pair may provide a point of deformability for the substrate tRNA to adapt to the enzyme's active site.
tRNA nucleotide 47: An evolutionary enigma
- NICOLAS CERMAKIAN, WILLIAM H. McCLAIN, ROBERT CEDERGREN
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A previous analysis of tRNA sequences suggested a correlation between the absence of a nucleotide at position 47 (nt 47) in the extra loop and the presence of a U13:G22 base pair in the D-stem. We have evaluated the significance of this correlation by determining the in vivo activity of tRNAs containing either a C13:G22 or a U13:G22 pair in tRNA molecules with or without nt 47. Although this correlation might reflect some malfunction of tRNAs lacking nt 47, but containing the C13:G22, assays of the in vivo suppressor activity showed that this tRNA is actually more active than the tRNA with the features found in the database, i.e., a U13:G22 base pair and no nt 47. Moreover, analogous constructs with a GGC anticodon permitted the growth of an Escherichia coli strain deleted for tRNAAlaGGC genes equally well. On the other hand, long-term growth experiments with competing E. coli strains harboring the tRNA lacking nt 47, either with the C13:G22 or the U13:G22 base pair demonstrated that the U13:G22 tRNA overtook the C13:G22 strain even when the starting proportion of strains favored the C13:G22 strain. Thus, the preference for the U13:G22 tRNA lacking nt 47 in the sequence database is most likely due to factors that come into play during extended growth or latency rather than to the ability of the tRNA to engage in protein synthesis.
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