CDK18/Cyclin Y complex of human CDK18, also known as PCTK3 and PCTAIRE3, GenBank Accession No. BC011526, a.a. 1-474(end) with N-terminal GST-tag, MW=76 kDa, and human Cyclin Y, also known as CCNY, CBCP1, CCNX, and CFP1, GenBank Accession No. NM_145012, a.a. 2-341(end) with N-terminal GST-tag. MW= 64 kDa. Co-expressed in a Baculovirus infected Sf9 cell expression system.