Category: Science
-
How to Learn Scanning Thermal Microscopy (SThM): From Thermal AFM Probes to Nanoscale Temperature, Conductivity and Subsurface Heat-Flow Mapping
Science Hub Route Continue through the eduKate Sengkang Science Hub · Complete Science Index
-
How to Learn Bacterial Ribosome Hibernation: From 70S Translation Machines to 100S Ribosome Storage, Stress Survival and Recovery
Wait, What? A Bacterium Can Put Its Ribosomes Into Storage Ribosomes are expensive. A rapidly growing bacterium may invest a large fraction of its resources in rRNA, ribosomal proteins, assembly and translation factors. When nutrients disappear, continuing translation becomes wasteful. Destroying every ribosome would also be costly because the cell would need to rebuild them…
-
How to Learn Grazing-Incidence Wide-Angle X-Ray Scattering (GIWAXS): From Grazing Geometry and Reciprocal Space to Thin-Film Texture, Crystallisation and Operando Structure
Science Hub Route Continue through the eduKate Sengkang Science Hub · Complete Science Index
-
How to Learn Chlorosomes and Extreme Low-Light Photosynthesis: From Self-Assembled Bacteriochlorophyll Antennas to Exciton Transfer
Wait, What? Some Bacteria Build a Light-Harvesting Antenna With Hundreds of Thousands of Pigments and Almost No Internal Protein Scaffold Most familiar photosynthetic antenna complexes are pigment–protein structures. Proteins hold chlorophylls in precise positions. Chlorosomes break that expectation. In green sulfur bacteria and some other anoxygenic phototrophs, a chlorosome can contain on the order of…
-
How to Learn Ferromagnetic Resonance (FMR/VNA-FMR): From Magnetization Precession and Kittel Modes to Damping, Spin Pumping and Nonlinear Spin Dynamics
Science Hub Route Continue through the eduKate Sengkang Science Hub · Complete Science Index
-
How to Learn Bacterial Hopanoids: From Squalene Cyclization to Membrane Mechanics, Symbiosis and Molecular Fossils
Wait, What? Some Bacteria Use Molecules That Behave a Little Like Cholesterol—and Those Molecules Can Survive in Rocks for Geological Time Eukaryotic cells often use cholesterol and related sterols to tune membrane order. Many bacteria do not make sterols. Some instead synthesize hopanoids: pentacyclic triterpenoids built from squalene. Hopanoids can increase membrane order, reduce permeability…
