Related Experiment Video
Updated: Aug 15, 2026

Laboratory Techniques Used to Maintain and Differentiate Biotypes of Vibrio cholerae Clinical and Environmental Isolates
Published on: May 30, 2017
Structural organization of the transfer RNA operon I of Vibrio cholerae: differences between classical and El Tor
Atreyi Ghatak1, Anasuya Majumdar, Ranajit K Ghosh
1Molecular Biology Laboratory, Indian Institute of Chemical Biology, 4, Raja SC Mullick Road,Jadavpur, Kolkata 700 032, India.
Abstract:
Nine major transfer RNA (tRNA) gene clusters were analysed in various Vibrio cholerae strains. Of these, only the tRNA operon I was found to differ significantly in V. cholerae classical (sixth pandemic) and El Tor (seventh pandemic) strains. Amongst the sixteen tRNA genes contained in this operon, genes for tRNA Gln3 (CAA) and tRNA Leu6 (CUA) were absent in classical strains as compared to El Tor strains. The observation strongly supported the view that the above two pandemic strains constitute two different clones.
More Related Videos
Related Concept Videos
Bacterial RNA Polymerase
In most genes, the transcription site is a single base present upstream of the coding sequence. Though RNAP is a catalytically efficient enzyme, it does not recognize...
Bacterial RNA Polymerase
In most genes, the transcription site is a single base present upstream of the coding sequence. Though RNAP is a catalytically efficient enzyme, it does not recognize...
Prokaryotic Gene Structure and Organization
Repressible Operon: trp Operon
Operon Model
Operons

