Comparison List


Katushka2S is a basic (constitutively fluorescent) red fluorescent protein published in 2015, derived from Entacmaea quadricolor. It is reported to be a very rapidly-maturing dimer with moderate acid sensitivity.
Oligomerization Organism Molecular Weight Cofactor
Dimer Entacmaea quadricolor 26.4 kDa -

FPbase ID: 4E21X


Ex λ Em λ EC (M-1 cm-1) QY Brightness pKa Maturation (min) Lifetime (ns)
588 633 67,000 0.44 29.48 5.4 14.0  


t1/2 (s) Power Light Mode In Cell Fusion ˚C Reference
72.0 Widefield 25.0 Luker et al. (2015)

Katushka2S Sequence

Katushka2S was derived from Katushka with the following mutations: M1_S2insVGED/S158A

Note: M1_S2insVGED is not a defining mutation in Katushka2S, the parental protein Katushka is sometimes shown with M1_S2insVGED as well (e.g. at SnapGene)



No excerpts have been added for Katushka2S
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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External Resources

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