Involvement of Serine Threonine Protein Kinase, PknL, from Mycobacterium Tuberculosis H37Rv in Starvation Response of Mycobacteria
- *Corresponding Author:
- Dr. Sujatha Narayanan,
Scientist F Tuberculosis Research Centre (ICMR)
Mayor V R Ramanathan Road Chetpet
Chennai-600 031 Tamil Nadu, India
E-mail: [email protected]
Received Date: December 21, 2009; Accepted Date: December 27, 2009; Published Date: December 27, 2009
Citation: Lakshminarayan H, Rajaram A, Narayanan S (2009) Involvement of Serine Threonine Protein Kinase, PknL, from Mycobacterium Tuberculosis H37Rv in Starvation Response of Mycobacteria. J Microbial Biochem Technol 1:030-036. doi: 10.4172/1948-5948.1000006
Copyright: ©2009 Lakshminarayan H, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License,which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The adaptation to nutrient depletion in bacteria involves a highly organized series of intracellular events that enable them to adapt to starvation conditions. The regulatory effect of serine threonine protein kinase, PknL, fromMycobacterium tuberculosis strain H37Rv was investigated under nutrient deprived conditions that simulate circumstances leading to latency. Recombinant PknL was expressed in Mycobacterium smegmatis strain mc2 155 in its wild type and mutant forms. In vitro growth kinetics experiments revealed that clone expressing active PknL had a significant growth advantage under nutrient limiting conditions. Experiments were conducted to ascertain the in silico predictions of the involvement of PknL in regulating glutamine metabolism in mycobacteria. Furthermore, a role for PknL in cell wall biogenesis/cell division was shown by scanning electron microscopy.