I have searched for this question in the net but could not find any satisfactory answers.I will be really grateful if anyone can help me.I will need a minimum of 5 DIFFERENCES between fimbriae and pili.Please help me out.Thanks in advance.
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Many bacteria, particularly those with Gram- cell wall structure, have external appendages; delicate strands of protein that extend beyond the surface of the cell. These external structures of bacteria can come in many forms. Long, thin flagella are used by some bacteria to move about.
Sex pili allow bacteria to share genes. Shorter extensions, called fimbriae (singular fimbria), enable bacteria to adhere to surfaces and potentially infect the cells of their host.
Most Gram-negative bacteria have these short, fine appendages surrounding the cell. In contrast, Gram-positive bacteria never have fimbriae.These protein projections are not used to help the cell move about, but instead make it possible for bacteria adhere to each other, surfaces and to host cells. Basically fimbriae help bacteria stick to things.
Pili and fimbriae are different structures of bacteria but in some books these terms become confused. actually both are different. lengh of fimbriae is more then pili and they are hair like, their proteins are also different then pili. pili consist of protein PILIN.
Pili are synonym with appendages .They are longer, thicker tube like outgrowths and have no role to play in movement. They are made of pilin and attach themselves to conjugation tube.
Fimbriae are the fibres which have tooth brush like bristles. They are large in number and help in attaching bacteria to stable surfaces which act as a rock in water
http://en.wikipedia.org/wiki/Pilus
http://en.wikipedia.org/wiki/Fimbria_(ba…
5 diff are thr ...:) gud luck........
Sex pili allow bacteria to share genes. Shorter extensions, called fimbriae (singular fimbria), enable bacteria to adhere to surfaces and potentially infect the cells of their host.
Most Gram-negative bacteria have these short, fine appendages surrounding the cell. In contrast, Gram-positive bacteria never have fimbriae.These protein projections are not used to help the cell move about, but instead make it possible for bacteria adhere to each other, surfaces and to host cells. Basically fimbriae help bacteria stick to things.
Pili and fimbriae are different structures of bacteria but in some books these terms become confused. actually both are different. lengh of fimbriae is more then pili and they are hair like, their proteins are also different then pili. pili consist of protein PILIN.
Pili are synonym with appendages .They are longer, thicker tube like outgrowths and have no role to play in movement. They are made of pilin and attach themselves to conjugation tube.
Fimbriae are the fibres which have tooth brush like bristles. They are large in number and help in attaching bacteria to stable surfaces which act as a rock in water
http://en.wikipedia.org/wiki/Pilus
http://en.wikipedia.org/wiki/Fimbria_(ba…
5 diff are thr ...:) gud luck........
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SAME