- #1
Adrian
- 40
- 0
Hi everybody,
I've been reading up on conjugation and came across the concept of surface exclusion, i.e. two specific proteins on the surface of F+ cells preventing another F+ cell's pili from attaching. These to proteins are coded for by the traS and traT genes, both presumably connected to the pilus / plasma bridge / transport mechanism in one way or another.
Now my question is, what exactly do these proteins do? What's theri function, and where exactly are they? Anyone have a URL to a good sketch or other picture of the thing?
Also, are there documented cases of F+ / F+ conjugation occurring nonetheless (albeit with a very low frequency)?
Thanks guys,
I've been reading up on conjugation and came across the concept of surface exclusion, i.e. two specific proteins on the surface of F+ cells preventing another F+ cell's pili from attaching. These to proteins are coded for by the traS and traT genes, both presumably connected to the pilus / plasma bridge / transport mechanism in one way or another.
Now my question is, what exactly do these proteins do? What's theri function, and where exactly are they? Anyone have a URL to a good sketch or other picture of the thing?
Also, are there documented cases of F+ / F+ conjugation occurring nonetheless (albeit with a very low frequency)?
Thanks guys,