[Interaction of the outer membrane pore-forming protein of Yersinia pseudotuberculosis with lipid A and its synthetic analogs].

Interaction of the major outer membrane protein form Yersinia pseudotuberculosis with lipid A was investigated by intrinsic fluorescence, CD spectroscopy and CsCl gradient centrifugation methods. The protein was shown to have two independent binding sites with an association constant 6.1 x 10(4) M-1. The interaction depends on both the type of the glycoside bond and hydrophilic--hydrophobic balance of the glycolipid molecule.