Need GTPase for positive control

[Dima Klenchin]

In article <40f675$2pp at phunn1.sb.com>,
   Steven_Mcclue-1%notes at sb.com (Steve Mcclue) wrote:
>In article <newitt-1008951734290001 at 128.231.113.35>, 
newitt at nih.gov says...
>>
>>I am doing some GTPase assays and would like to obtain an 
enzyme with
>>intrinsic GTPase activity to use as a positive control.

John, retinal transducin, I think, would be the best thing.
If you need it as a control, there is no need to purify the 
protein. Bovine rods contain which are very easy to 
purify contain HUGE amounts of it. 
Reply to me if you want details. 

Regards. - Dima