Comparison List


mRuby2 is a basic (constitutively fluorescent) red fluorescent protein published in 2012, derived from Entacmaea quadricolor. It has moderate acid sensitivity.
Oligomerization Organism Molecular Weight Cofactor
Monomer Entacmaea quadricolor 26.5 kDa -

FPbase ID: 8MJ78


Ex λ Em λ EC (M-1 cm-1) QY Brightness pKa Maturation (min) Lifetime (ns)
559 600 113,000 0.38 42.94 5.3 150.0 2.5

mRuby2 OSER Measurements

% Normal Cells OSER/NE ratio Cell Type Reference
87.4 ± 5.8 (10000 cells) - HeLa Cranfill et al. (2016)
33.3 (60 cells) - HeLa Costantini et al. (2015)
14.0 (113 cells) - U-2 OS Bindels et al. (2016)
87.4 ± 5.8 (10000 cells) - HeLa Shaner et al. (2013)


t1/2 (s) Power Light Mode In Cell Fusion ˚C Reference
123.0   Bindels et al. (2016)

mRuby2 Sequence

mRuby2 was derived from mRuby with the following mutations: N2_S3delinsVSKGEE/L15M/I102V/A119V/A131P/*230MextDELYK
amino acid numbers relative to eqFP611. show relative to mRuby

GenBank: AFR60232
IPG: 30275455


No excerpts have been added for mRuby2
Excerpts are snippets from publications that capture key information about this protein that does not easily fit into one of the existing fields (such as a summary, motivation, or observation).

Primary Reference

Additional References

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