Venkatesh Lab

Chemotaxis in E. coli

 

Chemotaxis is a phenomenon in which microorganisms are able to direct their movements in response to chemicals present in their surroundings. We have focused on quantification of the motion of E. coli cells to varying concentrations and gradients of nutrients as well as toxins so as to capture the spatial and temporal variation of the drift velocity. We also study the complex rheological properties due to their collective motion.

PUBLICATIONS

 

Motor characteristics determine the rheological behavior of a suspension of microswimmers, of microswimmers

 Richa Karmakar, Ranjit Gulvady, Mahesh S. Tirumkudulu and KV Venkatesh, Physics of Fluids, 26, 2014.

 

Study on the Effect of Glucose on Trg Receptor of Escherichia coli Using Soft Agar Experiment,

R Karmakar, MS Tirumkudulu, KV Venkatesh, Indian Chemical Engineer, 1-6, 2014.

 

Chemotactic Migration of Escherichia Coli to Glucose is due to Additive Contributions from Phosphotranspherase System and Trg Receptor Sensing Mechanism

Deepti Deepika, R.V.S. Uday Bhaskar, Mahesh S. Tiumkudulu and K.V. Venkatesh, Biophysical Journal, Volume 104, Issue 2, Supplement 1, p161a–162a, 29 January 2013

 

Chemotaxis of Escherichia coli to L-serine,

Rajitha R. Vuppula Mahesh. Tirumkudulu, K. V. Venkatesh, Physical Biology, 7 (2), art. no. 026007 2010.

 

Mathematical modeling and Experimental validation of chemotaxis under controlled gradients of methyl-aspartate in Escherichia coli ,

Rajitha R. Vuppula Mahesh. Tirumkudulu, K. V. Venkatesh, Molecular Biosystems, 2010