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. 2013 Sep 9;8(9):e73732. doi: 10.1371/journal.pone.0073732

Figure 3. The catalytic activity of β1i is not affected by the PSMB9 codon 60 polymorphisms.

Figure 3

(a) The catalytic activity of β1i measured by rate of hydrolysis of Ac-PAL-AMC in human cancer cell lines with H/H or R/H genotype (blank bars) and R/R genotype (filled bars). Variable activity was observed among cell lines. (b) Rate of Ac-PAL-AMC hydrolysis in cell lines with H/H or R/H genotype (open circles) or R/R genotype (closed squares). Rate of hydrolysis did not show any statistically significant difference between H+ and H- cell lines.