Comparison List


a.k.a. EYFP-V68L/Q69K

EYFP-Q69K is a basic (constitutively fluorescent) green/yellow fluorescent protein published in 1999, derived from Aequorea victoria. It has moderate acid sensitivity.

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Oligomerization Organism Molecular Weight Cofactor
Weak dimer Aequorea victoria 27.0 kDa -

FPbase ID: XZJ98


Ex λ Em λ EC (M-1 cm-1) QY Brightness pKa Maturation (min) Lifetime (ns)
514 526 72,000 0.76 54.72 5.8    


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EYFP-Q69K Sequence

EYFP-Q69K was derived from EYFP with the following mutations: Q69K
amino acid numbers relative to avGFP. show relative to EYFP



No excerpts have been added for EYFP-Q69K
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

Dynamic and quantitative Ca2+ measurements using improved cameleons

Miyawaki A, Griesbeck O, Heim R, Tsien Ry

(1999). Proceedings of the National Academy of Sciences, 96(5) , 2135-2140. doi: 10.1073/pnas.96.5.2135. Article

Additional References

External Resources

Change history

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