Table 1. Description of the chaperone plasmids used in the study.

Plasmid	Resistance Marker	Inducer	Chaperones	Molecular Weights
pG-KJE8	Chloramphenicol (20 µg/ml)	L-arabinose (0.5 mg/ml) tetracycline (5 ng/ml)	dnaK-dnaJ-grpE/groES-groEL	dnaK-70 kDa dnaJ-40 kDa grpE-22 kDa groES-10 kDa groEL-60 kDa
pGro7	Chloramphenicol (20 µg/ml)	L-arabinose (0.5 mg/ml)	groES-groEL	groES-10 kDa groEL-60 kDa
pKJE7	Chloramphenicol (20 µg/ml)	L-arabinose (0.5 mg/ml)	dnaK-dnaJ-grpE	dnaK-70 kDa dnaJ-40 kDa grpE-22 kDa
pG-Tf2	Chloramphenicol (20 µg/ml)	tetracycline (5 ng/ml)	groES-groEL/tig	groES-10kDa groEL-60 kDa tig-56 kDa
pTf16	Chloramphenicol (20 µg/ml)	L-arabinose (0.5 mg/ml)	tig	tig-56 kDa