Modeling of butyric acid recognition by molecular imprinted polyimide.

The constitutional repeating unit structures of poly(pyromellitic dianhydride-co-4,4'-oxydianiline) or polyamiс acid, butyric acid and complexes between butyric acid and one, two or three units of polyamiс acid were calculated using the density functional theory method (DFT B3LYP) on a 6-31G(d,p) basis with the basis set superposition error (BSSE) correction in the program Gaussian 09. The optimised structures of the template and polyamiс acid allowed to establish intermolecular non-covalent interactions during imprinting and, based on the results, develop a method of polyimide-based molecularly imprinted polymer preparation using butyric acid as template. It was shown that the optimum molar ratio of reagents used for the synthesis of molecularly imprinted polymer is 1:1 (interaction energy ∆E = 43.

[VIBRIO CHOLERAE CHITINOLYTIC COMPLEX:THE COMPOSITION AND THE ROLE IN PERSISTANCE].

Reviewed the paper are the composition and functions of Vibrio cholerae chitinolytic complex which play an important role in the maintaining and creating new forms of vibrios in the environ- ment, it is better adapted to survive in environmental.

[N-ACETYL-β-D-GLUCOSAMINIDASE OF VIBRIO CHOLERAE].

Aim: Study N-acetyl-β-D-glucosaminidase (chitobiase) (EC 3.2.1.

[System of activation of plasminogen in Vibrio cholerae].

Aim: Study system of activation of plasminogen in Vibrio cholerae.

Materials And Methods: 75 strains of V. cholerae of various origins were used in the study.

[The detection of capability of Vibrio comma to activate human plasminogen in vitro].

The article discusses the technique of defining the strains of comma bacillus according their capability to convert human plasminogen into plasmin in vitro. This method can be implemented in applied and fundamental research concerning the study of subtle mechanisms of pathogenesis and colonization of intestines under cholera.