Cdc2 p34 substrate is a synthetic substrate for Cdc2 p34. The sequence is derived from SV40 TAg (118-138) with Ser|120|and Ser|123|substituted with Ala to increase substrate specificity. Lyophilized powder may be stored at 4°C for short periods only. Lyophilized powder is stable for a minimum of 12 months at -20°C (keep dry). Product may be reconstituted to nominal volume and stored in aliquots at -20°C. For maximum recovery of product, c Cdc2 p34 substrateis a substrate for cyclin-dependent protein kinase 1