Table 1. Stable MDCK cells with tetracycline-inducible expression of mouse PC1 proteins.

MDCK cells	PC1 variant expressed	Description
MDCKPC1WT	PC1WT	Full-length wild-type PC1 with a C-terminal FLAG tag
MDCKPC1-2M	PC12M	Full-length PC1 with a C-terminal FLAG tag, containing amino-acid substitutions at L4219P and A4222P within the coiled-coil domain
MDCKPC1-R/X	PC1R/X	PC1 terminating at R4218X with a C-terminal FLAG tag before the stop codon
MDCKPC1V	PC1V	Full-length PC1 with a C-terminal FLAG tag, containing amino-acid substitution T3041V at GPS cleavage site