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if you discover a protein that is toxic to M. smegmatis (mycobacterium smegmatis), would this same...

if you discover a protein that is toxic to M. smegmatis (mycobacterium smegmatis), would this same protein also be toxic to E. coli (escherichia coli) which is a different type of bacteria? why or why not?
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Answer #1

To start this answer, I would like to remind about the grouping of bacteria based on Gram staining. Bacteria are classified as Gram+ and Gram-ve based on their ability to retain Gram stain. Those who retain the colour are Gram+ and those who do not are Gram- . Gram +ve have thick peptidoglycan wall, and Gram -ve have thin wall.

M. smegmatis is a Gram positive bacterium.and so due to thick wall it absorbs the surrounding toxin. And E.coli is a Gram -ve bacterium, (thin peptidoglycan wall), has less ability to hold the toxin and so it ejects it.

Conclusion: The toxin will not be toxic to the E.coli.

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