Pneumolysin
Sign in to savethumb|right|3D structure of pneumolysin Pneumolysin is a virulence factor of the Gram-positive bacteria Streptococcus pneumoniae.
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thumb|right|3D structure of pneumolysin Pneumolysin is a virulence factor of the Gram-positive bacteria Streptococcus pneumoniae.
It is a pore-forming toxin of 53 kDa composed of 471 amino acids. It has a range of biological activity, including the ability to lyse and interfere with the function of cells and soluble molecules of the immune system.
Excerpted from Wikipedia’s “Pneumolysin” article, available under the CC BY-SA 4.0 licence.