Education

Ph.D. in Biochemistry, University of Calcutta, India, 1989

Current position

Senior Principal Scientist, Infectious Diseases and Immunology Division, Indian Institute of Chemical Biology, Kolkata, India
Area of research interest: Bacterial pathogenesis

Publications (selected)

1. Raghwan and Chowdhury, R. (2014). Host cell contact induces fur-dependent expression of virulence factors CagA and VacA in Helicobacter pylori. Helicobacter 19(1): 17-25.
   
2. Chakraborti, S., Bhattacharya, S., Chowdhury, R. and Chakrabarti, P. (2013). The molecular basis of inactivation of metronidazole-resistant Helicobacter pylori using polyethyleneimine functionalized zinc oxide nanoparticles. PLoS One 8(8): e70776.
   
3. Chatterjee, E. and Chowdhury, R. (2013). Reduced virulence of the Vibrio cholerae fadD mutant is due to induction of the extracytoplasmic stress response. Infect Immun 81(10): 3935-3941.
   
4. Dey, A. K., Bhagat, A. and Chowdhury, R. (2013). Host cell contact induces expression of virulence factors and VieA, a cyclic di-GMP phosphodiesterase, in Vibrio cholerae. J Bacteriol 195(9): 2004-2010.
   
5. Pradhan, S., Mallick, S. K. and Chowdhury, R. (2013). Vibrio cholerae classical biotype is converted to the viable non-culturable state when cultured with the El Tor biotype. PLoS One 8(1): e53504.
   
6. Ghosh, A., Choudhury, A., Das, A., Chatterjee, N. S., Das, T., Chowdhury, R., Panda, K., Banerjee, R. and Chatterjee, I. B. (2012). Cigarette smoke induces p-benzoquinone-albumin adduct in blood serum: Implications on structure and ligand binding properties. Toxicology 292(2-3): 78-89.
   
7. Ray, S., Chatterjee, E., Chatterjee, A., Paul, K. and Chowdhury, R. (2011). A fadD mutant of Vibrio cholerae is impaired in the production of virulence factors and membrane localization of the virulence regulatory protein TcpP. Infect Immun 79(1): 258-266.
   
8. Pradhan, S., Baidya, A. K., Ghosh, A., Paul, K. and Chowdhury, R. (2010). The El Tor biotype of Vibrio cholerae exhibits a growth advantage in the stationary phase in mixed cultures with the classical biotype. J Bacteriol 192(4): 955-963.
   
9. Chatterjee, A. and Chowdhury, R. (2008). Bile and unsaturated fatty acids inhibit the binding of cholera toxin and Escherichia coli heat-labile enterotoxin to GM1 receptor. Antimicrob Agents Chemother 52(1): 220-224.
   
10. Chatterjee, A., Dutta, P. K. and Chowdhury, R. (2007). Effect of fatty acids and cholesterol present in bile on expression of virulence factors and motility of Vibrio cholerae. Infect Immun 75(4): 1946-1953.
    
11. Ghosh, A., Paul, K. and Chowdhury, R. (2006). Role of the histone-like nucleoid structuring protein in colonization, motility, and bile-dependent repression of virulence gene expression in Vibrio cholerae. Infect Immun 74(5): 3060-3064.
    
12. Banerjee, S. and Chowdhury, R. (2006). An orphan DNA (cytosine-5-)-methyltransferase in Vibrio cholerae. Microbiology 152(Pt 4): 1055-1062.
    
13. Chatterjee, A., Chaudhuri, S., Saha, G., Gupta, S. and Chowdhury, R. (2004). Effect of bile on the cell surface permeability barrier and efflux system of Vibrio cholerae. J Bacteriol 186(20): 6809-6814.
    
14. Paul, K., Ghosh, A., Sengupta, N. and Chowdhury, R. (2004). Competitive growth advantage of nontoxigenic mutants in the stationary phase in archival cultures of pathogenic Vibrio cholerae strains. Infect Immun 72(9): 5478-54822.
    
15. Krishnan, H. H., Ghosh, A., Paul, K. and Chowdhury, R. (2004). Effect of anaerobiosis on expression of virulence factors in Vibrio cholerae. Infect Immun 72(7): 3961-3967.
    
16. Sengupta, N., Paul, K. and Chowdhury, R. (2003). The global regulator ArcA modulates expression of virulence factors in Vibrio cholerae. Infect Immun 71(10): 5583-5589.
    
17. Mohanakumar, K. P., Thomas, B., Sharma, S. M., Muralikrishnan, D., Chowdhury, R. and Chiueh, C. C. (2002). Nitric oxide: an antioxidant and neuroprotector. Ann N Y Acad Sci 962: 389-401.
    
18. Chakrabarti, S., Sengupta, N. and Chowdhury, R. (1999). Role of DnaK in in vitro and in vivo expression of virulence factors of Vibrio cholerae. Infect Immun 67(3): 1025-1033.
    
19. Gupta, S. and Chowdhury, R. (1997). Bile affects production of virulence factors and motility of Vibrio cholerae. Infect Immun 65(3): 1131-1134.
    
20. Sahu, G. K., Chowdhury, R. and Das, J. (1997). The rpoH gene encoding sigma 32 homolog of Vibrio cholerae. Gene 189(2): 203-207.
    
21. Sahu, G. K., Chowdhury, R. and Das, J. (1994). Heat shock response and heat shock protein antigens of Vibrio cholerae. Infect Immun 62(12): 5624-5631.
    
22. Biswas, S. K., Chowdhury, R. and Das, J. (1992). A 14-kilodalton inner membrane protein of Vibrio cholerae biotype e1 tor confers resistance to group IV choleraphage infection to classical vibrios. J Bacteriol 174(19): 6221-6229.
    
23. Chowdhury, R., Biswas, S. K. and Das, J. (1989). Abortive replication of choleraphage phi 149 in Vibrio cholerae biotype el tor. J Virol 63(1): 392-397.
    
24. Chowdhury, R., Ray, A., Ray, P. and Das, J. (1987). Replication and packaging of choleraphage phi 149 DNA. J Virol 61(12): 3999-4006.
    
25. Chowdhury, R. and Das, J. (1986). Infection by choleraphage phi 138: bacteriophage DNA and replicative intermediates. J Virol 57(3): 960-967.