• C Subramanyam

      Articles written in Journal of Biosciences

    • The effect of copper on histidine biosynthesis inNeurospora crassa

      C Subramanyam G Venkateswerlu

      More Details Abstract Fulltext PDF

      The inhibition of growth of a wild strain ofNeurospora crassa by Cu2+ is counteracted by histidine, histidine methyl ester, histidinol and Mn2+. In the presence of Cu2+, the total free amino acid content decreased by 30%. The decreased free amino acid pools of arginine, histidine and tyrosine were restored on the addition of Mn2+. Histidinol phosphate phosphatase showed a decrease in activity in the presence of Cu2+. This inhibition was reversed on the addition of excess Mn2+. The data suggest that copper toxicity in the mould is due to suppression of histidine biosynthesis.

    • An enzymic method for the determination of chitin and chitosan in fungal cell walls

      C Subramanyam S L N Rao

      More Details Abstract Fulltext PDF

      The free and N-acetyl glucosamine contents, serving as a measure of the amounts of chitosan and chitin respectively, were determined in the chitinase hydrolysates of the cell wall of a wild strain ofNeurospora crassa. Chitinase, obtained from cultures ofSerratia marcescens, could hydrolyse the cell wall completely apart from being capable of hydrolysing preparations of chitin and chitosan. The free and N-acetyl glucosamines, released by chitinase hydrolysis, were determined by a modified Morgan-Elson reaction carried out in the presence and absence of acetic anhydride. The method is capable of estimating chitin and chitosan contents in as little as 100 μg of cell wall material.

  • Journal of Biosciences | News

      Forthcoming Special issue.

    • To trigger further research on plant mitochondria, the Journal of Biosciences is bringing out a special issue titled "Plant Mitochondria: Properties and Interactions with Other Organelles".

      Plant mitochondria are quite distinct and have unique features, such as a cyanide-insensitive alternate pathway. They also interact with chloroplasts to optimize photosynthetic carbon assimilation.

      Submissions are welcome until 30 July 2023. The contributions can be original articles, short communications, reviews, or mini-reviews on any topic related to plant mitochondria.

      Authors can submit their articles online at https://www.editorialmanager.com/jbsc/default2.aspx

      Posted on April 12, 2023
    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2022-2023 Indian Academy of Sciences, Bengaluru.