Very nice to receive your inquiry. The product details are confirmed as below.
1. General Information
Code: CSB-EP005065HU (Old Code: CSB-RP116574h. Please update.)
Name: Recombinant Human Cyclin-dependent kinase 4(CDK4)
Expression Region: 2-303aa; Full Length of Mature Protein
Tag Info: N-terminal 6xHis-tagged
Form & Buffer: Supplied in liquid form in 6M guanidine hydrochloride and 20mM Tris buffer
2. Protein Concentration
The general concentration of EP protein is 0.1-2mg/ml. Do you have specified concentration? We will try to satisfy the your request.
3. Biological Activity
We haven't validated the activity of this protein and haven't received any feedback from other customers yet. The protein we provide is full length of mature protein which should have activity in our default buffer
(Tris-based buffer, 50% glycerol) in theory. However, we haven't validated yet so we can't 100% guarantee that it is active. We suggest you to purchase a small amount to have a try first.
4. Form & Buffer
We could satisfy the specified storage buffer (Supplied in liquid form in 6M guanidine hydrochloride and 20mM Tris buffer) listed on your website. However, this buffer contains denaturant guanidine hydrochloride.
It may influence the activity of the protein, so the protein in this specified buffer is unlikely to have activity. Would you pls confirm whether you could accept our default storage buffer?