FIG 9.

Adsorption of purified β-Gal of A. acidocaldaricus on spores of wild-type and sps mutant strains. Total units (gray bars), spore-bound units (black bars), and unbound units (white bars) of β-galactosidase obtained using wild-type or spsA and sps isogenic mutant spores. The data are averages from three independent experiments performed with spores prepared independently. Differences between the specific activity of spore-bound enzyme (black bars) was statistically significant between the wild type and the spsA mutant (P = 0.0001) and between the wild type and the sps mutant (P = 0.0001).