Fig. 3. (A) Protein extracted from non-transfected and stably-transfected N/N1003A
cells was immunoblotted with antibody to Cdk5 or p35. Endogenous Cdk5 is
expressed equally well in non-transfected N/N1003A cells (1), Cdk5-transfected
N/N1003A cells (2) and Cdk5T33-tranfected N/N1003A cells (3). The arrow points
to exogenous his-tagged Cdk5. (B) Expression of p35 mRNA. RT/PCR was performed
on RNA extracted from rat lens (lane 3) or N/N1003A cells (lane 4). Negative
controls lacking reverse transcriptase were performed with each sample: rat
lens (lane 2); N/N1003A cells (lane 5). Molecular weight markers are shown in
lane 1.