Collect. Czech. Chem. Commun. 1986, 51, 2919-2923

Formation of the poly(Lys-Ala-Ala) complex with potassium oligogalacturonates

Slavomír Bystrickýa, Tibor Sticzaya, Rudolf Kohna and Karel Bláhab

a Institute of Chemistry, Slovak Academy of Sciences, 842 38 Bratislava
b Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6


The helix-forming interaction of poly(Lys-Ala-Ala) with potassium oligogalacturonates of various polymerization degree (n = 1-9) was investigated by the circular dichroism spectra. The complex-forming effect of these oligomers is considerably lower than that of the polymeric D-galacturonan. The highest efficiency was observed at n = 4 and 6, where the chain lengths of oligogalacturonates approximate to the distance of the most nearly located -NH3(+) groups of the α-helical polypeptide conformation.