If pQE40 is used to express a fusion protein with DHFR, can the DHFR be cleaved afterwards?

This set provides 5 vectors (pQE-9, pQE-30, pQE-31, pQE-32, and pQE-40) for expression of N-terminally His-tagged proteins. pQE-30, pQE-31, and pQE-32 provide the multiple cloning site (MCS) in all three reading frames while pQE-9 has an alternative, shorter multiple cloning site. pQE-40 is designed for expression of DHFR-fusion proteins and is recommended for expression of poorly expressed proteins or short peptides, which are often prone to proteolysis, as DHFR enhances both stability and antigenicity. Since DHFR itself displays little immunogenicity in mouse and rat, DHFR-fusion proteins are ideal for epitope screening.