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- W4210346670 abstract "Despite large cell-to-cell variations in the concentrations of individual signaling proteins, cells transmit signals correctly. This phenomenon raises the question of what signaling systems do to prevent a predicted high failure rate. Here we combine quantitative modeling, RNA interference, and targeted selective reaction monitoring (SRM) mass spectrometry, and we show for the ubiquitous and fundamental calcium signaling system that cells monitor cytosolic and endoplasmic reticulum (ER) Ca(2+) levels and adjust in parallel the concentrations of the store-operated Ca(2+) influx mediator stromal interaction molecule (STIM), the plasma membrane Ca(2+) pump plasma membrane Ca-ATPase (PMCA), and the ER Ca(2+) pump sarco/ER Ca(2+)-ATPase (SERCA). Model calculations show that this combined parallel regulation in protein expression levels effectively stabilizes basal cytosolic and ER Ca(2+) levels and preserves receptor signaling. Our results demonstrate that, rather than directly controlling the relative level of signaling proteins in a forward regulation strategy, cells prevent transmission failure by sensing the state of the signaling pathway and using multiple parallel adaptive feedbacks. PMID: 21844332" @default.
- W4210346670 created "2022-02-08" @default.
- W4210346670 creator A5016382712 @default.
- W4210346670 date "2011-12-04" @default.
- W4210346670 modified "2023-10-16" @default.
- W4210346670 title "Faculty Opinions recommendation of Parallel adaptive feedback enhances reliability of the Ca2+ signaling system." @default.
- W4210346670 doi "https://doi.org/10.3410/f.13395960.14764059" @default.
- W4210346670 hasPublicationYear "2011" @default.
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