Table 1. Specific activity and xenon-inhibition of different CopB preparations.

CopB preparation	nmol min-1 mg-1a	%a	Significanceb
Soluble	976 ± 215	100	0.008
Soluble+Xe	155 ± 87	15.0
Soluble+phospholipids	1046 ± 121	100	0.0007
Soluble+phospholipids+Xe	266 ± 109	24.9
Resonstituted	541 ± 81	100	0.0008
Reconstituted+Xe	339 ± 68	62.4

^aValues with standard deviation (n = 3).

^bSignificance p of the difference was calculated with Student's t-test (n = 3).