Calculating Protein Concentration

[AK]

It is amazing to me that this basic question was honored here, perhaps since 
she is from Oxford. I remember not too long ago a student was hammered to 
death because of asking a basic question of plant extraction. UNFAIR.
AK

"Yvonne Couch" <yvonne.couch from dpag.ox.ac.uk> wrote in message 
news:mailman.219.1200581980.2451.methods from net.bio.net...
>I have two proteins of different molecular weights, how do I calculate the
> molarity of any solution I dissolve them in?  For example Protein 1 is 
> 15kDa
> and 1mg is dissolved in 1ml of water, how do I calculate how many moles 
> this
> is?
>