Full length, Human MEK1 (K97R) containing a Lysine to Arginine mutation at position 97, with C-terminal 6X His tag, expressed in E. coli. GenBank Accession: NM_002755 Applications: A suitable substrate of cRAF. Other applications not tested. Recommended Dilutions: Optimal dilutions to be determined by the researcher. Storage and Stability: Aliquot to avoid repeated freezing and thawing and store at -70C. Aliquots are stable for 6 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.