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function, assembly, and interaction of primary cell wall cellulose synthase homotrimers.
bioRxiv
February 2024
Department of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, VA 22903. Howard Hughes Medical Institute.
Plant cell walls contain a meshwork of cellulose fibers embedded into a matrix of other carbohydrate and non-carbohydrate-based biopolymers. This composite material exhibits extraordinary properties, from stretchable and pliable cell boundaries to solid protective shells. Cellulose, a linear glucose polymer, is synthesized and secreted across the plasma membrane by cellulose synthase (CesA).
View Article and Find Full Text PDFExpression and Interaction Proteomics of GluA1- and GluA3-Subunit-Containing AMPARs Reveal Distinct Protein Composition.
Cells
November 2022
Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands.
The AMPA glutamate receptor (AMPAR) is the major type of synaptic excitatory ionotropic receptor in the brain. AMPARs have four different subunits, GluA1-4 (each encoded by different genes, , , and ), that can form distinct tetrameric assemblies. The most abundant AMPAR subtypes in the hippocampus are GluA1/2 and GluA2/3 heterotetramers.
View Article and Find Full Text PDFFunctional Properties and Extraction Techniques of Chicken Egg White Proteins.
Foods
August 2022
National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
Chicken egg whites contain hundreds of proteins, and are widely used in the food, biological and pharmaceutical industries. It is highly significant to study the separation and purification of egg white proteins. This review first describes the structures and functional properties of several major active proteins in egg whites, including ovalbumin, ovotransferrin, ovomucoid, lysozyme, ovomucin, ovomacroglobulin and avidin.
View Article and Find Full Text PDFBiochemical and Structural Characterization of Human Core Elongator and Its Subassemblies.
ACS Omega
February 2022
Life Sciences Institute, Department of Biochemistry and Molecular Biology, The University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada.
Conserved from yeast to humans and composed of six core subunits (Elp1-Elp6), Elongator is a multiprotein complex that catalyzes the modification of the anticodon loop of transfer RNAs (tRNAs) and in turn regulates messenger RNA decoding efficiency. Previous studies showed that yeast Elongator consists of two subassemblies (yElp1/2/3 and yElp4/5/6) and adopts an asymmetric overall architecture. Yet, much less is known about the structural properties of the orthologous human Elongator.
View Article and Find Full Text PDFIdentification and characterization of a noncanonical menaquinone-linked formate dehydrogenase.
J Biol Chem
February 2022
Aix Marseille Université, CNRS, Laboratoire de Chimie Bactérienne (UMR7283), IMM, IM2B, Marseille, France. Electronic address:
The molybdenum/tungsten-bis-pyranopterin guanine dinucleotide family of formate dehydrogenases (FDHs) plays roles in several metabolic pathways ranging from carbon fixation to energy harvesting because of their reaction with a wide variety of redox partners. Indeed, this metabolic plasticity results from the diverse structures, cofactor content, and substrates used by partner subunits interacting with the catalytic hub. Here, we unveiled two noncanonical FDHs in Bacillus subtilis, which are organized into two-subunit complexes with unique features, ForCE1 and ForCE2.
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