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Biomedical subjects

J C Kertesz

Publications and source records attributed to J C Kertesz.

4 recordsLinked to original sources
PubMed1980

Interaction of methylglyoxal with poly-L-lysine.

The reaction of methylglyoxal with polypeptides is accompanied by an electron spin resonance absorption in the free radial region. Analysing the interaction of methylglyoxal with poly-L-lysine we found that methylglyoxal polymer formation is a major process in our system. The electron spin resonance signal seems to originate both from the polymer itself and its interaction with the polypeptide. Nuclear magnetic resonance measurements show that the methylglyoxal polymer interacts with the polypeptide via the NH groups of peptide bonds.

Aldehydes↗
PubMed1978

Energy bands and charge transfer in proteins.

The effects of salts on protein--the causing of a shift in isoelectric point and the altering of the melting temperature--are proposed to be the result of binding to the protein peptide chain, which is considered as a one-dimensional solid. The interaction of methylglyoxal with protein and polylysine to give charge-transfer complexes and allow electrical conductivity are viewed as further support for the band structure of proteins. Calculations on protein chains resembling real proteins show that conductivity should be much less than expected for homopolypeptides.

Electric Conductivity↗