Comparison List


mKate2 is a basic (constitutively fluorescent) red fluorescent protein published in 2009, derived from Entacmaea quadricolor. It is reported to be a rapidly-maturing monomer with moderate acid sensitivity.
Oligomerization Organism Molecular Weight Cofactor
Monomer Entacmaea quadricolor 26.1 kDa -

FPbase ID: DBBO8


Ex λ Em λ EC (M-1 cm-1) QY Brightness pKa Maturation (min) Lifetime (ns)
588 633 62,500 0.4 25.0 5.4 20.0 2.5

mKate2 OSER Measurements

% Normal Cells OSER/NE ratio Cell Type Reference
81.1 ± 6.1 (10000 cells) - HeLa Cranfill et al. (2016)
59.0 (102 cells) 3.6 ± 0.8 (42 cells) U-2 OS Bindels et al. (2016)


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

mKate2 Sequence

mKate2 was derived from mKate with the following mutations: M1_S2insV/V45A/M146T/S158A/K231R



No excerpts have been added for mKate2
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

  1. Two-photon absorption properties of fluorescent proteins

    Drobizhev M, Makarov Ns, Tillo Se, Hughes Te, Rebane A

    (2011). Nature Methods, 8(5) , 393-399. doi: 10.1038/nmeth.1596. Article   Pubmed

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