Comparison List


R3-2+PCB is an intermediate phycobiliprotein created in the evolution of the far-red smURFP proteins. Unlike its ancestral TeAPCα, it autocatalytically attaches PCB (without a lyase).

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Oligomerization Organism Molecular Weight Cofactor
? Trichodesmium erythraeum IMS101 15.0 kDa Phycocyanobilin


Ex λ Em λ EC (M-1 cm-1) QY Brightness pKa Maturation (min) Lifetime (ns)
620 648 74,000 0.13 9.62      


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R3-2+PCB Sequence

R3-2+PCB was derived from TeAPCα with the following mutations: N42I/Y65F/G66C/V83I/V98M



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Primary Reference

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