Figure 5

Subcellular localisation of the CCN3 isoforms is critical for biological activity. The cDNA sequences encoding the truncated and the full length CCN3 protein were inserted into RCAS non defective Rous sarcoma virus (RSV)-derived proviral vector. The amino-truncated CCN3 protein which is deprived of signal peptide (top) is not secreted and induces morphological transformation of chicken embryo fibroblasts, whereas the secreted full length CCN3 protein induces cell growth arrest.