Comparison List


frSkylan-S is a photoswitchable green fluorescent protein published in 2021, derived from Lobophyllia hemprichii.

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Oligomerization Organism Molecular Weight Cofactor
Monomer Lobophyllia hemprichii 25.8 kDa -

FPbase ID: 8DFHZ


Ex λ Em λ EC (M-1 cm-1) QY Brightness pKa Maturation (min) Lifetime (ns)
499 513 95,400 0.8 76.32     2.93


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frSkylan-S Sequence

frSkylan-S was derived from mEos4b with the following mutations: H62S
amino acid numbers relative to EosFP. show relative to mEos4b



We combined the amino acid substitutions of two Eos protein derivatives, Skylan-S and mEos4b, which are a green reversibly photoswitchable fluorescent protein (RSFP) and a fixation-resistant green-to-red photoconvertible fluorescent protein, respectively, resulting in the fixation-resistant Skylan-S (frSkylan-S), a green RSFP.

Osuga et al. (2021)

Primary Reference

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