Silica core-shell nanoparticles with a MSU shell have been synthesized using several non-ionic poly(ethylene oxide) based surfactants via a two step sol-gel method. The materials exhibit a typical worm-hole pore structure and tunable pore diameters between 2.4 nm and 5.8 nm.
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http://dx.doi.org/10.1039/c1cc12242h | DOI Listing |
BMC Res Notes
December 2024
Department of Cell and Molecular Biology, Uppsala University, Box 549, 751 24, Uppsala, Sweden.
Proc Natl Acad Sci U S A
December 2024
MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, MI 48824.
Bacterial microcompartments (BMCs) are prokaryotic organelles that consist of a protein shell which sequesters metabolic reactions in its interior. While most of the substrates and products are relatively small and can permeate the shell, many of the encapsulated enzymes require cofactors that must be regenerated inside. We have analyzed the occurrence of an enzyme previously assigned as a cobalamin (vitamin B) reductase and, curiously, found it in many unrelated BMC types that do not employ B cofactors.
View Article and Find Full Text PDFPhys Chem Chem Phys
November 2024
Institute of Advanced Interdisciplinary Technology, Shenzhen MSU-BIT University, Shenzhen 518172, China.
A precisely controllable heat treatment process is critical for nanofabrication. We developed a two-step method to fabricate a graphdiyne nanotube (GNT) through heat treatment in an argon environment. Initially, we placed a carbon nanotube (CNT) near a rectangular graphdiyne nanoribbon (GNR) to trigger the self-scrolling of the ribbon.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
November 2024
MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, MI 48824.
Carboxysomes are protein microcompartments found in cyanobacteria, whose shell encapsulates rubisco at the heart of carbon fixation in the Calvin cycle. Carboxysomes are thought to locally concentrate CO in the shell interior to improve rubisco efficiency through selective metabolite permeability, creating a concentrated catalytic center. However, permeability coefficients have not previously been determined for these gases, or for Calvin-cycle intermediates such as bicarbonate ([Formula: see text]), 3-phosphoglycerate, or ribulose-1,5-bisphosphate.
View Article and Find Full Text PDFSci Rep
October 2024
Faculty of Physics, Lomonosov Moscow State University, Moscow, 119991, Russia.
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