Experientia

, Volume 13, Issue 11, pp 449–451 | Cite as

Photolyse ultraviolette et photoréactivation des bactéries — Aspects de dépolymérisation et repolymérisation des acides nucléiques bactériens

  • I. Grundland
  • H. Krzywicka
  • M. Chojnacki
Kurze Mitteilungen

Summary

Electrophoretic analysis of bacterial substance proves the departure, from UV irradiated microbes screened from light for a certain time, of substances which were responsible for increasing the charge density by surface unit during the first moments which follow the irradiation by UV rays. Spectrophotometric analysis of liquids having contained these bacilli proves concommitantly the diffusion of those substances from the bacterial substance to the aqueous phase and reveals their nature. The photoreactivity which is possible during the first moments following the UV irradiation of bacilli, due to the presence of the fragments of depolymerisation of nucleic acid macromolecule in the bacterial substance, becomes impossible after the departure (diffusion) of those fragments to the aqueous phase. These observations seem to show that the phenomenon of photo-reactivity is connected with the repolymerisation of the macromolecule primitively divided of desoxyribonucleic acid.

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Copyright information

© Birkhäuser Verlag 1957

Authors and Affiliations

  • I. Grundland
    • 1
  • H. Krzywicka
    • 1
  • M. Chojnacki
    • 1
  1. 1.Institut de Biochimie et Biophysique P.A.N.Université de VarsoviePoland

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