Study of Mycobacteriophage L1 Repressor Protein
Author Information
Author(s): Ganguly Tridib, Bandhu Amitava, Chattoraj Partho, Chanda Palas K, Das Malabika, Mandal Nitai C, Sau Subrata
Primary Institution: Bose Institute
Hypothesis
How does the repressor protein of mycobacteriophage L1 interact with asymmetric operator DNAs?
Conclusion
Repressors encoded by mycobacteriophages differ significantly from those of λ and related phages at the functional level but are nearly similar at the structural level.
Supporting Evidence
- The L1 repressor has an N-terminal domain and a C-terminal domain.
- CI binds to O64 and OL types of asymmetric operators with variable affinity.
- The conformational change of CI affects its binding affinity at higher temperatures.
Takeaway
The study shows that the repressor protein from mycobacteriophage L1 works differently than those from other phages, even though they look similar.
Methodology
The study involved purifying the repressor protein and analyzing its structure and binding affinity to different DNA operators at varying temperatures.
Limitations
The exact role of dimeric repressor in L1/L5 phage development is not known with certainty.
Digital Object Identifier (DOI)
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