Actin-based motility, SEM C017 / 8335

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Actin-based motility, SEM C017 / 8335

Actin-based motility. Coloured scanning electron micrograph (SEM) of Shigella sp. bacteria (pink) infecting cells. Filaments of the protein actin, which is part of the cells cystoskeleton, have been stained green. The bacteria use the actin to help them infect other cells. They initiate the growth of actin filaments that push them against the cell membrane. This causes the cell membrane to grow outwards and allows the bacteria to infect other cells without passing into the extracellular space. Shigella sp. are Gram-negative rod-shaped bacteria. They infect the large intestine, causing dysentery, which can vary in severity from a mild attack of diarrhoea to an acute infection

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Media ID 9211651

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Bacilli Bacillus Bacteria Bacterial Bacteriology Bacterium Cytoskeleton Gram Negative Infecting Infection Intracellular Microbiology Motile Motility Optical Spreading Actin Filaments Microbiological Pathogen Protein

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EDITORS COMMENTS
This print showcases the fascinating world of actin-based motility, captured through a coloured scanning electron microscope (SEM). In this image, we witness Shigella sp. bacteria (pink) infecting cells with their ingenious mechanism. The green-stained filaments represent actin, an essential protein forming part of the cell's cytoskeleton. These Gram-negative rod-shaped bacteria employ actin to facilitate their invasion into other cells. By initiating the growth of actin filaments, they exert pressure against the cell membrane, causing it to protrude outward. This unique strategy allows them to infect neighboring cells without traversing into the extracellular space. Shigella sp. , notorious for causing dysentery in humans, can induce varying degrees of severity ranging from mild diarrhea to acute infections. Through this mesmerizing SEM image, we gain insight into the intricate interplay between pathogenic bacteria and host cells at a microscopic level. The meticulous detailing provided by this photograph not only highlights the biological aspects but also emphasizes its significance in bacteriology and microbiology research. It serves as a powerful tool for scientists studying bacterial motility and infection mechanisms. This remarkable visual representation is brought to you by SCIENCE PHOTO LIBRARY – an invaluable resource that continues to contribute immensely towards advancing our understanding of various scientific disciplines through stunning imagery like this one.

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