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The Effect of Microbial and Animal Proteinases on Peptide- and Protein-Lignosulphonic Acid Complexes in Agar Gel

Virkningen av mikrobielle og animale proteinaser på peptid- og protein-ligninsulfonsyre-komplekser i agar medier

Summary

It is shown that various microbial and animal proteinases, with the exception of pepsin, have a lytic effect on peptide- and protein-lignosulphonic acid complexes in agar gel, and that this effect is characteristically inhibited by specific antiproteinases and naturally occurring serum inhibitors. The activity of the enzymes is studied at various concentrations of peptides and proteins, and at various pH values in the agar. The lysis phenomenon is seen in relation to the precipitation theory of peptide- and protein-lignosulphonic acid complexes, and to biochemical reactions taking place in certain natural ecosystems. Activity caused by different microbial proteinases is demonstrated in agar plates at pH 3.6. The possibility of using the method for studies on proteolytic enzymes at low pH values is suggested.

Sammendrag

Det er vist at forskjellige mikrobielle og animale proteinaser med pepsin som unntak har lytisk virkning på peptid- og protein-ligninsulfonsyre-komplekser i agar gel og at denne effekt hemmes på karakteristisk vis av spesifikke antiproteinaser og naturlig forekommende inhibitorer i serum. Enzymenes virkning er studert for forskjellige konsentrasjoner av peptider og proteiner og med forskjellige pH verdier i agargelen. Lysisfenomenet er diskutert i relasjon til presipitasjonsteorien for peptid- og protein-ligninsulfonsyre-komplekser og i relasjon til biokjemiske reaksjoner som skjer i visse økosystemer. Det er demonstrert aktivitet av forskjellige proteinaser i agar plater ved pH 3.6. En har antydet muligheten for å bruke den beskrevne metode til studier av proteolytiske enzymer ved låge pH-verdier.

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Nœss, B. The Effect of Microbial and Animal Proteinases on Peptide- and Protein-Lignosulphonic Acid Complexes in Agar Gel. Acta Vet Scand 12, 592–600 (1971). https://doi.org/10.1186/BF03547727

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  • DOI: https://doi.org/10.1186/BF03547727