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Multicolor plate reader fluorescence calibration
Journal article   Open access   Peer reviewed

Multicolor plate reader fluorescence calibration

Jacob Beal, Cheryl A. Telmer, Alejandro Vignoni, Yadira Boada, Geoff S. Baldwin, Liam Hallett, Taeyang Lee, Vinoo Selvarajah, Sonja Billerbeck, Bradley Brown, …
Synthetic biology (Oxford University Press), Vol.7(1), pp.ysac010-ysac010
02/02/2022
DOI: 10.1093/synbio/ysac010
PMCID: PMC9357555
PMID: 35949424
url
https://doi.org/10.1093/synbio/ysac010View
Published (Version of record) Open Access

Abstract

Plate readers are commonly used to measure cell growth and fluorescence, yet the utility and reproducibility of plate reader data is limited by the fact that it is typically reported in arbitrary or relative units. We have previously established a robust serial dilution protocol for calibration of plate reader measurements of absorbance to estimated bacterial cell count and for green fluorescence from proteins expressed in bacterial cells to molecules of equivalent fluorescein. We now extend these protocols to calibration of red fluorescence to the sulforhodamine-101 fluorescent dye and blue fluorescence to Cascade Blue. Evaluating calibration efficacy via an interlaboratory study, we find that these calibrants do indeed provide comparable precision to the prior calibrants and that they enable effective cross-laboratory comparison of measurements of red and blue fluorescence from proteins expressed in bacterial cells.
Biochemical Research Methods Biochemistry & Molecular Biology Biology Biotechnology & Applied Microbiology Life Sciences & Biomedicine Life Sciences & Biomedicine - Other Topics Science & Technology

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