Effect of streptomycin on greening and biosynthesis in Euglena gracilis.

@article{Kirk1962EffectOS,
  title={Effect of streptomycin on greening and biosynthesis in Euglena gracilis.},
  author={John T. O. Kirk},
  journal={Biochimica et biophysica acta},
  year={1962},
  volume={56},
  pages={
          139-51
        }
}
  • J. Kirk
  • Published 1962
  • Chemistry, Biology
  • Biochimica et biophysica acta

Influence of cell division on the degree of streptomycin bleaching of Euglena gracilis.

Streptomycin inhibition of greening of Euglena gracilis, strain z, was studied and it was found that the antibiotic was most effective if present during cell division in the absence of light.

EFFECT OF NITROFURANS ON THE CHLOROPLAST SYSTEM OF EUGLENA GRACILIS.

It is concluded that the nitrofurans induce apotplastidy by causing permanent damage to the chloroplast system rather than by inhibiting its replication temporarily.

Structural and developmental aspects during the greening process ofEuglena gracilis treated with myomycin

It can be inferred that the action of myomycin is due to a permanent block of protein synthesis on prokaryotic type plastidial ribosomes in the greening process of Euglena gracilis.

Chlorophyll formation in Euglena gracilis var. bacillaris: interference by analogues of purines, pyrimidines and amino acids.

Long-term exposure of non-proliferating euglenas, green or etiolated, to 5-fluoro-uracil had a profound effect on the chloroplast integrity of the organisms.

Studies on the dependence of chlorophyll synthesis on protein synthesis in Euglena gracilis, together with a nomogram for determination of chlorophyll concentration

Chlorophyll and carotenoid synthesis by E. gracilis were both markedly stimulated by the addition of ALA, and it is suggested that the rate of chlorophyll synthesis in the greening cells is limited by the rates of formation of ALT, which could be due to inhibition of synthesis of the thylakoid structural protein.

Mutagenic Action of Nitrofurans on Euglena gracilis and Mycobacterium phlei

It was found that a breakdown product, 5-nitro-2-furaldehyde, is liberated from furadantin and furoxone, which is responsible for the observed specific mutagenicity of 5-Nitrofuran drugs.

The Effect of Trypsin on the Pellicle of Euglena gracilis

It is suggested that cells of E. gracilis are only susceptible to trypsin when they are swollen as a result of exposure to hypotonic media: that the resultant stretching of the pellicle permits lysis by allowing the enzyme to penetrate to sites which are normally hidden.

Influence onEuglena gracilis of three types of inhibitors

Three groups of antibiotics were established according to their mechanism of action on the incorporation of14C-labelled precursors inEuglena gracilis, with nitrofurantoin comparable to compounds of the first group, sodium azide to those of the third group.

References

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Effect of Streptomycin on Chlorophyll Accumulation in Euglena gracilis

It is proposed that bleaching results from chelation of Mg by SM, thus blocking a Mg-requiring step in chlorophyll synthesis and preventing addition to the medium of any of several fin cations, including Mg.

COPPER ENZYMES IN ISOLATED CHLOROPLASTS. POLYPHENOLOXIDASE IN BETA VULGARIS.

Evidence that a copper enzyme, polyphenoloxidase (otherwise known as tyrosinase or catecholase), is localized in the chloroplasts of spinach beet (chard), Beta vu?garis is presented.

Studies on yeast metabolism. I. Fractionation and microdetermination of cell carbohydrates.

Direct measurement ofthe metabolic changes in the intracellular carbohydrate ofyeast has usually been restricted to the determination oftotal hydrolysable carbohydrate, that is to say, ofreducing

The purine and pyrimidine composition of deoxypentose nucleic acids.

  • G. R. Wyatt
  • Biology, Computer Science
    The Biochemical journal
  • 1951
Hitchings, G. H., Elion, G. B., Falco, E. A. & Russell, P. B. (1949). J. biol. Chem. 177, 357. Hotchkiss, R. D. (1948). J. biol. Chem. 175, 315. Johnson, T. B. & Coghill, R. D. (1925). J. Amer. chem.