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Department of Physiology, Development and Neuroscience



During my thesis work I studied the structure and function of different members of the potassium channel family such as Kir and K2P channels. I demonstated the presence of the state dependent gating network of the Kir 1.1 Channel. In K2P channels, I identified the location of the primary gate and  the polymodal gating mechanisms of the TREK1 channel.

At present, my focus of the study is to understand the visual phototransduction mechanism in fruit flies. The phototransduction mechanism is mediated via G-protein signalling results in the opening of the TRP channels followed by the calcium influx. but so far how TRP channels are opening remian unknown. I am particularly interested in deciphering the activation pathways as well as the gating mechanisms of the TRP channels in Drosophila Photoreceptors.



Key publications: 

Dau A, Friederich U, Dongre S, Li X, Bollepalli MK, Hardie RC, Juusola M, (2016), Evidence for Dynamic Network Regulation of Drosophila Photoreceptor Function from Mutants Lacking the Neurotransmitter Histamine, Front Neural Circuits.

Bollepalli MK, Fowler PW, Rapedius M, Shang L, Sansom MS, Tucker SJ, Baukrowitz T, (2014), State-dependent network connectivity determines gating in a K+ channel, Structure 22(7):1037-46

Fowler PW, Bollepalli MK, Rapedius M, Nematian E, Shang L, Sansom MS, Tucker SJ, Baukrowitz T, (2014), Insights into the structural nature of the transition state in the Kir channel gating pathway, Channels (Austin)

Piechotta PL, Rapedius M, Stansfeld PJ, Bollepalli MK, Ehrlich G, Andres-Enguix I, Fritzenschaft H, Decher N, Sansom MS, Tucker SJ, Baukrowitz T, (2011), The pore structure and gating mechanism of K2P channels, EMBO J 30(17):3607-19

Streit AK, Netter MF, Kempf F, Walecki M, Rinné S, Bollepalli MK, Preisig-Müller R, Renigunta V, Daut J, Baukrowitz T, Sansom MS, Stansfeld PJ, Decher N, (2011), A specific two-pore domain potassium channel blocker defines the structure of the TASK-1 open pore, J Biol Chem 286(16):13977-84

Paynter JJ, Shang L, Bollepalli MK, Baukrowitz T, Tucker SJ, (2010), Random mutagenesis screening indicates the absence of a separate H(+)-sensor in the pH-sensitive Kir channels, Channels (Austin) 4(5):390-7

Research Associate
Dr Murali  Bollepalli

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+44 (0) 122 333 3831
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