distilled water, 200 cm3. Cells
were grown aerobically for 18–20 h at 29◦C and mixed at 120 rpm.
Biomass was centrifuged for 10 min at room temperature at
4300 × g. The centrifugate was washed with 20 mM phosphate
buffer, рН 6.8. Sedimented cells were resuspended in a fresh buffer
solution and sedimented in an Eppendorf centrifuge for 3 min at
4300 × g. Washed biomass was weighed and stored in microtubes
at –15 ◦C.