The cell cortex is defined as a thin layer of filamentous actin, myosin motors, and regulatory proteins beneath the plasma membrane. Assembly and contraction of this actin meshwork generates cortical tension, which enables ...
Cell & Microbiology
Apr 4, 2023
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2
In a study published in Science Advances, Dr. Cong Yao's team from the Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology of the Chinese Academy of Sciences, reported a complete ...
Cell & Microbiology
Mar 30, 2023
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3
Plant movement has long fascinated many researchers. Legumes are a group of plants famous for exhibiting various leaf movements, including "nyctinastic movement," in which the leaves open in the day and close at night. Similar ...
Plants & Animals
Mar 16, 2023
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3
A team of researchers has developed a new method to screen FDA-approved drugs to determine if they could be repurposed or improved to help patients with a rare, debilitating disease of the nervous system.
Biochemistry
Feb 16, 2023
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24
Metastases occur when cancer cells leave a primary tumor and spread throughout the body. For this to happen, they have to break connections with neighboring cells and migrate to other tissues. Both processes are promoted ...
Cell & Microbiology
Jan 24, 2023
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11
Bacterial pathogens like Salmonella, Shigella, Listeria and many others exploit the protein skeleton of the cells they infect in order to spread throughout the host. However, how is this so-called cytoskeleton of host cells ...
Cell & Microbiology
Dec 15, 2022
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51
A recent study led by Assistant Professor of Gerontology Ryo Sanabria has identified a key protein that helps regulate the actin cytoskeleton, a scaffold of proteins within cells that makes their proper structure and function ...
Cell & Microbiology
Dec 12, 2022
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5
Toxins released by a type of bacteria that cause diarrheal disease hijack cell processes and force important proteins to assemble into "roads to nowhere," redirecting the proteins away from other jobs that are key to proper ...
Molecular & Computational biology
Nov 18, 2022
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139
In a new study, University of Maryland researchers have demystified the process by which cells receive their shape—and it all starts with a protein called actin.
Cell & Microbiology
Nov 4, 2022
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88
Actin filaments are protein fibers that make up the internal skeleton of the cell. As active elements of our cells, actin filaments support the cell's fusion, movement and are involved in many other cellular processes. Importantly, ...
Cell & Microbiology
Oct 26, 2022
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7
The Actinopterygii /ˌæktɨnɒptəˈrɪdʒi.aɪ/ or ray-finned fishes constitute a class or sub-class of the bony fishes.
The ray-finned fishes are so called because they possess lepidotrichia or "fin rays", their fins being webs of skin supported by bony or horny spines ("rays"), as opposed to the fleshy, lobed fins that characterize the class Sarcopterygii which also, however, possess lepidotrichia. These actinopterygian fin rays attach directly to the proximal or basal skeletal elements, the radials, which represent the link or connection between these fins and the internal skeleton (e.g., pelvic and pectoral girdles).
In terms of numbers, actinopterygians are the dominant class of vertebrates, comprising nearly 96% of the 25,000 species of fish. They are ubiquitous throughout fresh water and marine environments from the deep sea to the highest mountain streams. Extant species can range in size from Paedocypris, at 8 millimetres (0.31 in), to the massive Ocean Sunfish, at 2,300 kilograms (5,100 lb), and the long-bodied Oarfish, to at least 11 metres (36 ft).
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