[Concanavalin A-binding to cyclic reassembled microtubules from pig brain-tubulin (author's transl)]

Concanavalin A reacts to cyclic reassembled microtubules. The results were analysed morphometrically and topochemically. Concanavalin A can be observed mainly on the outer part of the microtubules and also partly in the lumen. After Concanavalin A reaction the diameters of microtubules are significantly higher than in the controls. It is shown that the saccharide component does not disappear during cyclic reassembly of microtubules. This compoenent is seen as a glycoprotein and as a part of at least one of their protein fractions or as a constitutive factor of microtubules.