Multiple marker abundance profiling: combining selected reaction monitoring and data-dependent acquisition for rapid estimation of organelle abundance in subcellular samples

Cornelia M. Hooper, Tim J. Stevens, Anna Saukkonen, Ian R. Castleden, Pragya Singh, Gregory W. Mann, Bertrand Fabre, Jun Ito, Michael J. Deery, Kathryn S. Lilley, Christopher J. Petzold, A. Harvey Millar, Joshua L. Heazlewood, Harriet T. Parsons

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Measuring changes in protein or organelle abundance in the cell is an essential, but challenging aspect of cell biology. Frequently-used methods for determining organelle abundance typically rely on detection of a very few marker proteins, so are unsatisfactory. In silico estimates of protein abundances from publicly available protein spectra can provide useful standard abundance values but contain only data from tissue proteomes, and are not coupled to organelle localization data. A new protein abundance score, the normalized protein abundance scale (NPAS), expands on the number of scored proteins and the scoring accuracy of lower-abundance proteins in Arabidopsis. NPAS was combined with subcellular protein localization data, facilitating quantitative estimations of organelle abundance during routine experimental procedures. A suite of targeted proteomics markers for subcellular compartment markers was developed, enabling independent verification of in silico estimates for relative organelle abundance. Estimation of relative organelle abundance was found to be reproducible and consistent over a range of tissues and growth conditions. In silico abundance estimations and localization data have been combined into an online tool, multiple marker abundance profiling, available in the SUBA4 toolbox (http://suba.live).

Original languageEnglish
Pages (from-to)1202-1217
Number of pages16
JournalPlant Journal
Volume92
Issue number6
DOIs
Publication statusPublished - 1 Dec 2017

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    Hooper, C. M., Stevens, T. J., Saukkonen, A., Castleden, I. R., Singh, P., Mann, G. W., Fabre, B., Ito, J., Deery, M. J., Lilley, K. S., Petzold, C. J., Millar, A. H., Heazlewood, J. L., & Parsons, H. T. (2017). Multiple marker abundance profiling: combining selected reaction monitoring and data-dependent acquisition for rapid estimation of organelle abundance in subcellular samples. Plant Journal, 92(6), 1202-1217. https://doi.org/10.1111/tpj.13743