Imperial College London

DrGeraldLarrouy-Maumus

Faculty of Natural SciencesDepartment of Life Sciences

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 7463g.larrouy-maumus

 
 
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Location

 

3.42Flowers buildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Yi:2020:10.1039/D0RA05153E,
author = {Yi, L and Rebollo-Ramirez, S and Larrouy-Maumus, G},
doi = {10.1039/D0RA05153E},
journal = {RSC Advances: an international journal to further the chemical sciences},
pages = {26212--26219},
title = {Metabolomics reveals that the cAMP receptor protein regulates nitrogen and peptidoglycan synthesis in Mycobacterium tuberculosis},
url = {http://dx.doi.org/10.1039/D0RA05153E},
volume = {10},
year = {2020}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Mycobacterium tuberculosis requires extensive sensing and response to environment for its successful survival and pathogenesis, and signalling by cyclic adenosine 3′,5′-monophosphate (cAMP) is an important mechanism. cAMP regulates expression of target genes via interaction with downstream proteins, one of which is cAMP receptor protein (CRP), a global transcriptional regulator. Previous genomic works had identified regulon of CRP and investigated transcriptional changes in crp deletion mutant, however a link to downstream metabolomic events were lacking, which would help better understand roles of CRP. This work aims at investigating changes at metabolome level in M. tuberculosis crp deletion mutant combining untargeted LC-MS analysis and 13C isotope tracing analysis. The results were compared with previously published RNA sequencing data. We identified increasing abundances of metabolites related to nitrogen metabolism including ornithine, citrulline and glutamate derivatives, while 13C isotope labelling analysis further showed changes in turnover of these metabolites and amino acids, suggesting regulatory roles of CRP in nitrogen metabolism. Upregulation of diaminopimelic acid and its related genes also suggested role of CRP in regulation of peptidoglycan synthesis. This study provides insights on metabolomic aspects of cAMP-CRP regulatory pathway in M. tuberculosis and links to previously published transcriptomic data drawing a more complete map.
AU - Yi,L
AU - Rebollo-Ramirez,S
AU - Larrouy-Maumus,G
DO - 10.1039/D0RA05153E
EP - 26219
PY - 2020///
SN - 2046-2069
SP - 26212
TI - Metabolomics reveals that the cAMP receptor protein regulates nitrogen and peptidoglycan synthesis in Mycobacterium tuberculosis
T2 - RSC Advances: an international journal to further the chemical sciences
UR - http://dx.doi.org/10.1039/D0RA05153E
UR - http://hdl.handle.net/10044/1/81344
VL - 10
ER -