Effect of L-cystine on macromolecular changes during spore and parasporal crystal formation in Bacillus thuringiensis var. thuringiensis.
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Date
1980-12
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Abstract
High concentration of L-cystine (0.25%) when present in a glucose-mineral salt medium
inhibited sporulation-specific events like protease production, calcium uptake and dipicolinic
acid synthesis in Bacillus thuringiensis var. thuringiensis. In addition, the enzymes of the Krebs
cycle from aconitase onwards were completely inhibited by a high concentration of cystine. At a
low concentration of cystine (0.05%), none of the above mentioned macromolecular changes
were affected. Lipid synthesis monitored by [1,214 C]-acetate incorporation into lipid as well as
into whole cells was completely inhibited.
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Keywords
Bacillus thuringiensis, spore, crystal, macromolecular changes
Citation
Rajalakshmi S, Shethna Y I. Effect of L-cystine on macromolecular changes during spore and parasporal crystal formation in Bacillus thuringiensis var. thuringiensis. Journal of Biosciences. 1980 Dec; 2(4): 311-319.