Hi Riya- Expression Systems has a protocol for SeMet incorporation (Click on the "Selenomethionine Incorporation" pdf file at http://www.expressionsystems.com/?mvcTask=documents) and they advertise that they do just about anything you would want to do with insect cells (see http://www.expressionsystems.com/?mvcTask=contractProduction), including expression of recombinant protein in insect cells. I promise that I am not an employee or a shareholder of this company. Just used their products and I was looking for a SeMet protocol recently, too, and happen to find theirs online. You can contact me off the board if you want more details. HTH- Brad On Tue, Aug 18, 2009 at 5:09 PM, riya doreen <[log in to unmask]> wrote: > Hi everyone, > > I am looking for a method for expressing selenomethionine labeled protein > in insect cells. Can anyone point me to a suitable protocol ? > Additionally, is anyone aware of companies that may provide this service > for a fee ? > > Thanks >