You should be able to find it in ncbi.

Try this link (the search terms are in it):

http://www.ncbi.nlm.nih.gov/nuccore/?term=(fhaB)+AND+%22Bordetella+pertussis%22%5Bporgn%3A__txid520%5D

That will give you all the version of it, you just have to pick the one you're interested in. 

hi

I tried the link you have suggested but there were no results for the strains i am searching for.

In your opinion is it possible that these stains have not been sequenced so far?

I am searching for fhaB sequences of following strains: Bp509 and Bp134

Here's a list of all the strains that NCBI has:

http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?id=520

Yours don't seem to be in there...

have a look here:

http://www.ncbi.nlm.nih.gov/protein/?term=fhaB+bordetella

Is this the one you were looking for?

http://www.ncbi.nlm.nih.gov/protein/ETI06891.1

Hi,

I invite you to search in the NCBI "gene database":

http://www.ncbi.nlm.nih.gov/gene/?term=fhaB+bordetella+pertussis

It is almost the same type of the "protein database" that Gennaro Apuzzo gives you but maybe with more accurate information.