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Full-Text Articles in Medicine and Health Sciences
(R)-Β-Lysine Modified Elongation Factor P Functions In Translation Elongation, Tammy J. Bullwinkle, S. Betty Zou, Andrei Rajkovic, Steven J. Hersch, Sara Elgamal, Nathaniel Robinson, David Smil, Yuri Bolshan, William Wiley Navarre, Michael Ibba
(R)-Β-Lysine Modified Elongation Factor P Functions In Translation Elongation, Tammy J. Bullwinkle, S. Betty Zou, Andrei Rajkovic, Steven J. Hersch, Sara Elgamal, Nathaniel Robinson, David Smil, Yuri Bolshan, William Wiley Navarre, Michael Ibba
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Post-translational modification of bacterial elongation factor P (EF-P) with (R)-β-lysine at a conserved lysine residue activates the protein in vivo and increases puromycin reactivity of the ribosome in vitro. The additional hydroxylation of EF-P at the same lysine residue by the YfcM protein has also recently been described. The roles of modified and unmodified EF-P during different steps in translation, and how this correlates to its physiological role in the cell, have recently been linked to the synthesis of polyproline stretches in proteins. Polysome analysis indicated that EF-P functions in translation elongation, rather than initiation as proposed previously. This was …
Association Of A Multi-Synthetase Complex With Translating Ribosomes In The Archaeon Thermococcus Kodakarensis, Medha Raina, Sara Elgamal, Thomas J. Santangelo, Michael Ibba
Association Of A Multi-Synthetase Complex With Translating Ribosomes In The Archaeon Thermococcus Kodakarensis, Medha Raina, Sara Elgamal, Thomas J. Santangelo, Michael Ibba
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
In archaea and eukaryotes aminoacyl-tRNA synthetases (aaRSs) associate in multi-synthetase complexes (MSCs), however the role of such MSCs in translation is unknown. MSC function was investigated in vivo in the archaeon Thermococcus kodakarensis, wherein six aaRSs were affinity co-purified together with several other factors involved in protein synthesis, suggesting that MSCs may interact directly with translating ribosomes. In support of this hypothesis, the aminoacyltRNA synthetase (aaRS) activities of the MSC were enriched in isolated T. kodakarensis polysome fractions. These data indicate that components of the archaeal protein synthesis machinery associate into macromolecular assemblies in vivo and provide the potential …
Translation Of Tobacco Policy Into Practice In Disadvantaged And Marginalized Subpopulations: A Study Of Challenges And Opportunities In Remote Australian Indigenous Communities, Jan A. Robertson, Katherine M. Conigrave, Rowena Ivers, Kim Usher, Alan R. Clough
Translation Of Tobacco Policy Into Practice In Disadvantaged And Marginalized Subpopulations: A Study Of Challenges And Opportunities In Remote Australian Indigenous Communities, Jan A. Robertson, Katherine M. Conigrave, Rowena Ivers, Kim Usher, Alan R. Clough
Faculty of Health and Behavioural Sciences - Papers (Archive)
Background: In Australia generally, smoking prevalence more than halved after 1980 and recently commenced to decline among Australia's disadvantaged Indigenous peoples. However, in some remote Indigenous Australian communities in the Northern Territory (NT), extremely high rates of up to 83% have not changed over the past 25 years. The World Health Organisation has called for public health and political leadership to address a global tobacco epidemic. For Indigenous Australians, unprecedented policies aim to overcome disadvantage and close the 'health gap' with reducing tobacco use the top priority. This study identifies challenges and opportunities to implementing these important new tobacco initiatives …
The Cellular Nucleic Acid Binding Protein Regulates The Alzheimer’S Disease Β-Secretase Protein Bace1, Christopher J. Holler
The Cellular Nucleic Acid Binding Protein Regulates The Alzheimer’S Disease Β-Secretase Protein Bace1, Christopher J. Holler
Theses and Dissertations--Molecular and Cellular Biochemistry
Alzheimer’s disease (AD) is the most common neurodegenerative disease affecting the elderly population and is believed to be caused by the overproduction and accumulation of the toxic amyloid beta (Aβ) peptide in the brain. Aβ is produced by two separate enzymatic cleavage events of the larger membrane bound amyloid precursor protein, APP. The first, and rate-limiting, cleavage event is made by beta-secretase, or BACE1, and is thus an attractive therapeutic target. Our lab, as well as many others, has shown that BACE1 protein and activity are increased in late-stage sporadic AD. We have extended these findings to show that BACE1 …