Actin-binding site is of importance for neurite
induction by full-length PKCε. (A) PKCε was modified by removing
nucleotides encoding amino acids 223–228, i.e., the ABS, from
wild-type PKCε cDNA (wt) and replacing it with an MluI
recognition sequence, coding for amino acids T and R. This mutated
PKCε (ΔABS) was also used to generate the new construct
εRDΔABS. Neurite outgrowth was examined in
SK-N-BE(2) (B) and SH-SY5Y cells (C) transfected with vectors encoding
wild-type εFL and εRD (wt) and corresponding proteins with deleted
actin-binding site (ΔABS), all fused to EGFP. The cells were fixed
and mounted 16 h after transfection and transfected cells with
long neurites were counted. Data (mean ± SEM, n = 3–6) are
presented as percentage transfected cells with long neurites. ∗,
statistically significant differences with analysis of variance
followed by Duncan's multiple range test.