[ccp4bb] phosphatase construct

[Brett, Thomas]

Hello:
I am making a kinase in e.coli that seems to autophosphorylate itself a bit, 
which makes it difficult to get a pure homogeneous sample for crystallization. 
I would like to use a phosphatase to remove the abberant phosphorylation. I 
have seen lambda phosphatase used for this type of thing in the past, but 
buying it is pricey. Does anyone have a e coli construct for this or some other 
phosphatase or perhaps another suggested solution to this dilema? thanks in 
advance.
-Tom