Folded peptides are more electrically conductive than unfolded peptides, study reveals
What puts the electronic pep in peptides? A folded structure, according to a new study in the Proceedings of the National Academy of Sciences.
What puts the electronic pep in peptides? A folded structure, according to a new study in the Proceedings of the National Academy of Sciences.
Molecular & Computational biology
10 hours ago
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Toxoplasma gondii is a parasite responsible for toxoplasmosis, a lifelong chronic infection prevalent in about 30% of the human population. It poses little harm to healthy individuals, but can result in severe consequences ...
Cell & Microbiology
Jul 11, 2024
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An international research team has assembled the genome and 3D chromosomal structures of a 52,000-year-old woolly mammoth—the first time such a feat has been achieved for any ancient DNA sample.
Molecular & Computational biology
Jul 11, 2024
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DNA G-quadruplexes (G4s) are a type of quadruple helix structure formed by a continuous guanine-rich DNA sequence. Although DNA G4s are thought to be involved in various biological processes, in many cases their causative ...
Cell & Microbiology
Jul 8, 2024
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Few things last very long in the world of the open oceans, it would seem. In the light-filled surface layer, microscopic algae convert carbon dioxide and water into biomass via photosynthesis. Individual cells vanish in a ...
Environment
Jun 23, 2024
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In most cases, antibiotics are a reliable form of protection against bacterial infections. They have saved billions of human lives since their introduction. This protection, however, is threatened by bacteria's resistance ...
Cell & Microbiology
May 16, 2024
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A team at the University of Tokyo have constructed an improved mid-infrared microscope, enabling them to see the structures inside living bacteria at the nanometer scale. Mid-infrared microscopy is typically limited by its ...
Optics & Photonics
Apr 17, 2024
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72
A new study details how nutrient-starved cells divert protein transport stations to cellular recycling centers to be broken down, highlighting a novel approach cells use to deal with stressful conditions.
Cell & Microbiology
Apr 12, 2024
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68
Lysosomes are centers for degradation, recycling, and signaling of cellular materials that are crucial for maintaining cellular homeostasis, development, and aging. To meet various physiological demands, lysosomes continuously ...
Cell & Microbiology
Mar 29, 2024
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Cells possess an innate immune system that defends against invasive pathogens such as bacteria and viruses. Previous studies have mapped out the cytoplasmic cGAS-STING pathway in the cytoplasm, known for responding to foreign ...
Cell & Microbiology
Mar 12, 2024
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The cell is the structural and functional unit of all known living organisms. It is the smallest unit of an organism that is classified as living, and is often called the building block of life. Some organisms, such as most bacteria, are unicellular (consist of a single cell). Other organisms, such as humans, are multicellular. (Humans have an estimated 100 trillion or 1014 cells; a typical cell size is 10 µm; a typical cell mass is 1 nanogram.) The largest known cell is an unfertilized ostrich egg cell.
In 1835 before the final cell theory was developed, a Czech Jan Evangelista Purkyně observed small "granules" while looking at the plant tissue through a microscope. The cell theory, first developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells. All cells come from preexisting cells. Vital functions of an organism occur within cells, and all cells contain the hereditary information necessary for regulating cell functions and for transmitting information to the next generation of cells.
The word cell comes from the Latin cellula, meaning, a small room. The descriptive name for the smallest living biological structure was chosen by Robert Hooke in a book he published in 1665 when he compared the cork cells he saw through his microscope to the small rooms monks lived in.
This text uses material from Wikipedia, licensed under CC BY-SA