[Determination of the molecular weight and form of the molecule histidine decarboxylase by the method of small-angle x-ray scattering]. / Opredelenie molekuliarnogo vesa i formy molekuly gistidin-dekarboksilazy metodom rentgenovskogo malouglovogo rasseianiia.

ABSTRACT

Shape and molecular weight of histidine-decarboxylase from Micrococus sp. n. were studied by the method of X-ray small-angle scattering. The inertion radius of the molecule Rg-2,93 nm. The shape of the molecule is adequately approximated by rotation ellipsoids of two possible variants the elongated and flattened ones. The eccentricity in both cases is 1.6. The volume of the enzyme molecule V=190 nm3. The molecular weight of histidine-dexarboxilase obtained from the X-ray experiment M=102 000 c.u.