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In E. coli, chemotaxis is characterized by the ability to move toward attractants (like nutrients) and away from repellents (like toxic substances). This movement is regulated by a series of receptors on the cell surface that detect chemical gradients in the environment. The bacterium uses flagella to propel itself, with changes in the direction of movement influenced by the sensing of these chemical signals, leading to a biased random walk. Key proteins involved in this process include Che proteins, which modulate the activity of the flagellar motor based on the chemical signals detected.

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1w ago

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