Imperial College London

Professor Ramesh Wigneshweraraj

Faculty of MedicineDepartment of Medicine

Professor of Molecular Microbiology



+44 (0)20 7594 1867s.r.wig




4.40BFlowers buildingSouth Kensington Campus






BibTex format

author = {Brown, DR and Barton, G and Pan, Z and Buck, M and Wigneshweraraj, S},
doi = {10.15698/mic2014.09.168},
journal = {Microb Cell},
pages = {315--317},
title = {Combinatorial stress responses: direct coupling of two major stress responses in Escherichia coli.},
url = {},
volume = {1},
year = {2014}

RIS format (EndNote, RefMan)

AB - Nitrogen is an essential element for all life, and this is no different for the bacterial cell. Numerous cellular macromolecules contain nitrogen, including proteins, nucleic acids and cell wall components. In Escherichia coli and related bacteria, the nitrogen stress (Ntr) response allows cells to rapidly sense and adapt to nitrogen limitation by scavenging for alternative nitrogen sources through the transcriptional activation of transport systems and catabolic and biosynthetic operons by the global transcriptional regulator NtrC. Nitrogen-starved bacterial cells also synthesize the (p)ppGpp effector molecules of a second global bacterial stress response - the stringent response. Recently, we showed that the transcription of relA, the gene which encodes the major (p)ppGpp synthetase in E. coli, is activated by NtrC during nitrogen starvation. Our results revealed that in E. coli and related bacteria, NtrC functions in combinatorial stress and serves to couple two major stress responses, the Ntr response and stringent response.
AU - Brown,DR
AU - Barton,G
AU - Pan,Z
AU - Buck,M
AU - Wigneshweraraj,S
DO - 10.15698/mic2014.09.168
EP - 317
PY - 2014///
SN - 2311-2638
SP - 315
TI - Combinatorial stress responses: direct coupling of two major stress responses in Escherichia coli.
T2 - Microb Cell
UR -
UR -
UR -
VL - 1
ER -