Results 21 to 30 of about 3,853 (141)

Modulating the activity of the peptidyl transferase center of the ribosome [PDF]

RNA, 2008
The peptidyl transferase (PT) center of the ribosome catalyzes two nucleophilic reactions, peptide bond formation between aminoacylated tRNA substrates and, together with release factor, peptide release. Structure and function of the PT center are modulated by binding of aminoacyl-tRNA or release factor, thus providing the basis for the specificity of ...
openaire   +2 more sources

Transcript correlation analysis for the identification of novel plant genes involved in iron metabolism and beyond: what next?

Plant Biology, EarlyView.
Transcript correlation analysis allowed the identification of several key nodes in the complex regulatory network of plant iron metabolism. Abstract Arabidopsis thaliana was the first plant genome to be fully sequenced, almost a quarter of a century ago, thanks to The Arabidopsis Genome Initiative, with contributions from scientists worldwide.
I. Murgia, P. Morandini
wiley   +1 more source

Clinical Laboratory Innovations: Nanoscale Detection of Chloramphenicol Using Nanomaterial Biosensors

Analytical Science Advances, Volume 7, Issue 2, December 2026.
Nanosensor schematic functionalized with specific bioreceptors that produce electrochemical signals upon Chloramphenicol binding. Resulting voltammetric readouts (differential pulse, square‐wave, and cyclic voltammetry) are analyzed to identify and quantify Chloramphenicol.
Nava Moghadasian Niaki, Reza Kheradmand, Seyedeh Giso Akbarian, Elham Shaterian, Hamed Shaterian, Ahmad Mobed   +5 more
wiley   +1 more source

Stereodivergent Synthesis of C5‐α‐Substituted Linezolid Derivatives From D‐Mannitol and Structure–Antibacterial Activity Evaluation

Chirality, Volume 38, Issue 9, September 2026.
A stereodivergent route from D‐mannitol enables access to enantiopure C5‐α‐substituted linezolid analogues with full configurational control. Biological evaluation reveals that α‐substitution abolishes antibacterial activity irrespective of stereochemistry, establishing a strict steric limitation at C5 and highlighting the dominant role of substituent ...
José A. Gálvez, Laura Sanz‐Asensio, Ramón Badorrey, Jesús Gonzalo‐Asensio   +3 more
wiley   +1 more source

Exercise‐specific plasma proteomic signatures in racehorses: Candidates for training adaptation and peak load monitoring

Equine Veterinary Journal, Volume 58, Issue 5, Page 1396-1412, September 2026.
Abstract Background Racehorses undergo profound physiological changes with training and competition, but current biomarkers inadequately capture the complex molecular dynamics of exercise. This study aimed to identify novel plasma biomarkers of training adaptation and peak load using high‐throughput proteomics.
Jowita Grzędzicka, Bianka Świderska, Ewa Sitkiewicz, Izabela Dąbrowska, Olga Witkowska‐Piłaszewicz   +4 more
wiley   +1 more source

Monitoring the Effect of Tributyltin Salicylate and Propionate, Retinoid X Receptor Ligands, on Heat Shock Protein Expression in MDA‐MB‐231 Cells by MALDI MS/MS

Journal of Mass Spectrometry, Volume 61, Issue 8, August 2026.
ABSTRACT Organotin (IV) compounds are known to induce apoptosis via the intrinsic mitochondrial pathway, which is a key mechanism of effective anticancer therapy. Their ability to selectively promote apoptotic cell death highlights their potential as chemotherapeutic agents. In this study, the in vitro effects of two triorganotin compounds, tributyltin
Dana Strouhalova, Dana Macejova, Julius Brtko, Janette Bobalova   +3 more
wiley   +1 more source

RNA aptamers to the peptidyl transferase inhibitor chloramphenicol

Chemistry & Biology, 1997
The problem of how macromolecules adopt specific shapes to recognize small molecules in their environment is readily addressed through in vitro selections (the SELEX protocol). RNA-antibiotic interactions are particularly attractive systems for study because they provide an opportunity to expand our understanding of molecular recognition by RNA and to ...
Burke, Donald H., Hoffman, David C., Brown, Analisa, Hansen, Mark, Pardi, Arthur, Gold, Larry   +5 more
openaire   +2 more sources

Substrate Specificity of Escherichia coli Peptidyl‐Transferase [PDF]

European Journal of Biochemistry, 1970
The kinetics of the puromycin interaction with different ribosomal bound peptidyl‐tRNAs were studied. The rates of the puromycin reaction with AA‐Phe‐tRNA and AA2‐Phe‐tRNA using three different amino acids (AA) were compared. At 4° all the three dipeptidyl‐tRNAsPhe reacted considerably slower than the three tripeptidyl‐tRNAsPhe. Acetyl‐Phe‐tRNA reacted
A, Panet, N, de Groot, Y, Lapidot
openaire   +2 more sources

Long‐Term Salt Exposure Reprograms the Nicotiana tabacum BY‐2 Suspension Proteome and Metabolome Toward Stabilization of the Core Metabolic Pathways, Protein Turnover Machinery Modifications, and Protective Metabolome Adjustments

Plant, Cell &Environment, Volume 49, Issue 8, Page 5849-5865, August 2026.
ABSTRACT In this study, we analyzed a unique Nicotiana tabacum BY‐2 line that was gradually adapted to and subsequently maintained in 190 mM NaCl for over 15 years. Years of continuous high salinity shaped a stable “new homeostasis” in BY‐2 suspension cells. Salt‐adapted cells were smaller and formed tighter clusters. Metabolomics revealed constitutive
Anita Rzadkiewicz, Łukasz Marczak, Aleksander Strugała, Maria Tomys, Ewelina Ratajczak, Tomasz Skrzypczak, Przemysław Wojtaszek, Anna Kasprowicz‐Maluśki, Agnieszka Szuba   +8 more
wiley   +1 more source

Extracellular Vesicles From Human Fallopian Tubes Enhance IVF Embryo Development and Contain Functional Proteins Including YWHAZ

Journal of Extracellular Vesicles, Volume 15, Issue 7, July 2026.
ABSTRACT Extracellular vesicles (EVs) in the mammalian oviduct constitute a key maternal regulatory system that maintains redox balance during early embryogenesis, yet their molecular cargo and functional relevance in human embryos remain poorly defined.
Yuehan Li, Wenjing Xiong, Limin Gao, Mingwei Lv, Fei Li, Rui Long, Chang Liu, Jianbo Wei, Meng Wang, Chenlu Zhang, Qiuyu Yu, Na Guo, Lei Jin, Cong Sui   +13 more
wiley   +1 more source