K H Lerche | PubMed Health

PubMed1986

[Latex immunoassay].

The latex immunoassay can be considered a quickly practicable and simple methodic variant of the immunoassay. In this work principles and present capability of this assay are stated. Own experiments deal with the adsorption reaction of alkaline phosphatase and horseradish peroxidase at polystyrol respectively melanin formaldehyde lattices. The adsorption reaction of several lattices is partly extremely different. Problems concerning the construction of an assay useful for practical purposes are discussed.

Adsorption↗

PubMed1980

[Cell electrophoretical characterization of the surface of Candida guilliermondii].

The electrical properties of the outer layer of the cell wall of a hydrocarbon-grown yeast C. guilliermondii were studied in detail by cell electrophoresis. Some experiments were also made with the yeast S. cerevisiae. The mobilities of the yeasts were measured as a function of pH at pH 2-11.5 and constant ionic strength I = 0.02 mol/l. For identification of surface groups the pH-mobility curves are used to calculate pK-values. The results indicate the presence of amino and carboxyl groups on the surface of C. guilliermondii. These groups are probably a part of a glyco-protein with an isoelectric point at pH 3.3 located on the surface. Electrophoresis of droplets of mineral oil coated with adsorbed protein layer confirms these conclusions. The importance of this glycoprotein in hydrocarbon uptake is discussed.

Candida↗