Results 51 to 60 of about 33,743 (304)

“Cut and Paste” Processes in the Search of Bioactive Products: One-Pot, Metal-free O-Radical Scission-Oxidation-Addition of C, N or P-Nucleophiles

Frontiers in Chemistry, 2022
Hypervalent iodine reagents have been applied in many metal-free, efficient synthesis of natural products and other bioactive compounds. In particular, treatment of alcohols, acetals and acids with hypervalent iodine reagents and iodine results in O ...
Marina Porras, Dácil Hernández, Concepción C. González, Alicia Boto   +3 more
doaj   +1 more source

Modification of Aminoacyl tRNA Synthetase in Order to Incorporate an Unnatural Amino Acid [PDF]

, 2018
Proteins allow daily processes in the cell to occur. A protein consists of amino acids. There are twenty natural amino acids coded for in the DNA of organisms. The natural amino acids can be modified to form unnatural amino acids (UAAs). UAAs have useful
Burkhart, Grace
core   +1 more source

Probing the role of the cation–π interaction in the binding sites of GPCRs using unnatural amino acids [PDF]

, 2009
We describe a general application of the nonsense suppression methodology for unnatural amino acid incorporation to probe drug–receptor interactions in functional G protein-coupled receptors (GPCRs), evaluating the binding sites of both the M2 muscarinic
Ballesteros, Cho, D. A. Dougherty, Dougherty, Dougherty, Dougherty, Doupnik, Gallivan, H. A. Lester, Hibert, Hopkins, Huang, Huang, K. S. Bower, Klabunde, Kofuji, Krapivinsky, Lagerstrom, Lu, Lu, M. M. Torrice, Ma, Mark, Nemeth, Nowak, Palczewski, Rasmussen, Schwartz, Warne, Xiu, Zacharias, Zhong   +31 more
core   +3 more sources

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source

Chimeric design of pyrrolysyl-tRNA synthetase/tRNA pairs and canonical synthetase/tRNA pairs for genetic code expansion

Nature Communications, 2020
Orthogonal aminoacyl-tRNA synthetase/tRNA pairs are crucial for the incorporation of unnatural amino acids in a site-specific manner. Here the authors use rational chimera design to create multiple efficient pairs that function in bacterial and mammalian
Wenlong Ding, Hongxia Zhao, Yulin Chen, Bin Zhang, Yang Yang, Jia Zang, Jing Wu, Shixian Lin   +7 more
doaj   +1 more source

Developing an Unnatural Amino Acid-Specific Aminoacyl tRNA Synthetase [PDF]

, 2018
Unnatural Amino Acids (UAAs), amino acids not present in the human genetic code, have been synthesized to have a broad range of useful properties, in this case, as metal-binders which could have drug delivery applications.
Mammoser, Claire C, Rowe, Laura
core   +2 more sources

Potential therapeutic targeting of BKCa channels in glioblastoma treatment

Molecular Oncology, EarlyView.
This review summarizes current insights into the role of BKCa and mitoBKCa channels in glioblastoma biology, their potential classification as oncochannels, and the emerging pharmacological strategies targeting these channels, emphasizing the translational challenges in developing BKCa‐directed therapies for glioblastoma treatment.
Kamila Maliszewska‐Olejniczak, Karolina Pytlak, Sandra Jaworowska, Bogusz Kulawiak, Piotr Bednarczyk   +4 more
wiley   +1 more source

Software-aided approach to investigate peptide structure and metabolic susceptibility of amide bonds in peptide drugs based on high resolution mass spectrometry. [PDF]

PLoS ONE, 2017
Interest in using peptide molecules as therapeutic agents due to high selectivity and efficacy is increasing within the pharmaceutical industry. However, most peptide-derived drugs cannot be administered orally because of low bioavailability and ...
Tatiana Radchenko, Andreas Brink, Yves Siegrist, Christopher Kochansky, Alison Bateman, Fabien Fontaine, Luca Morettoni, Ismael Zamora   +7 more
doaj   +1 more source

Preparation of Translationally Competent tRNA by Direct Chemical Acylation [PDF]

, 2010
Nonsense codon suppression for unnatural amino acid incorporation requires the preparation of a suppressor aminoacyl-tRNA. Chemical acylation strategies are general but inefficient and arduous. A recent report (J. Am. Chem. Soc.
Dougherty, Dennis A., Duffy, Noah H.
core   +2 more sources

Truncated and Helix-Constrained Peptides with High Affinity and Specificity for the cFos Coiled-Coil of AP-1 [PDF]

, 2013
Protein-based therapeutics feature large interacting surfaces. Protein folding endows structural stability to localised surface epitopes, imparting high affinity and target specificity upon interactions with binding partners.
A Patgiri, B Ibarra-Molero, BN Bullock, BR Brooks, BW Ozanne, CN Pace, D Aud, D Derossi, D Krylov, D Seebach, D Wang, D Wang, D Wang, D Wang, DA Guarracino, David P. Fairlie, DH Appella, DP Fairlie, DP Fairlie, E Vives, EF Wagner, EK O’Shea, EK O’Shea, EK O’Shea, F Bernal, F Bernal, GH Bird, GH Bird, Gloria Ruiz-Gómez, Huy N. Hoang, J Liu, JD Tyndall, JK Judice, JM Dixon, JM Mason, JM Mason, JM Mason, JM Mason, JN Glover, Jody M. Mason, Jose M. Sanchez-Ruiz, LD Walensky, LD Walensky, LK Henchey, LM Johnson, NE Shepherd, NE Shepherd, NE Shepherd, P Lavigne, PS Kutchukian, R Eferl, R Zenz, RE Moellering, RN Chapman, RO Crooks, RS Harrison, S Baek, SM Fuchs, T Wiseman, TA Libermann, Tara Rao, Timothy A. Hill, YW Kim, YW Kim   +63 more
core   +3 more sources