EXOTOXIN2 - EXOTOXINS ,.They areproteins,.Many , the

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
EXOTOXINS These are produced inside some bacteria as they grow, and released into the surroundings. They  are proteins, and many are enzymes that catalyze only certain biochemical reactions. Many  bacteria that produce exotoxins are gram-positive, but some gram-negative bacteria also produce  them. The genes for the production of the toxin are mostly carried on bacterial plasmids or  phages. Exotoxins are soluble in body fluids, so they easily enter the blood and are carried  throughout the body.    Exotoxins work by destroying particular parts of the host’s cells or by inhibiting certain  metabolic functions. They are highly specific in their effects. They may be placed in 3 groups,  according to the type of tissue they affect:    1. Cytotoxins---kill a variety of host cells or affect their function    2. Neurotoxins---interfere with nerve impulse transmission
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

EXOTOXIN2 - EXOTOXINS ,.They areproteins,.Many , the

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online