Comparison List


a.k.a. Alpha-allophycocyanin

TeAPCα is a light-harvesting phycobiliprotein from cyanobacteria (Trichodesmium erythraeum) that was used as the precursor for the far-red smURFP fluorescent proteins. Native APC is a highly fluorescent hexamer (three α + β dimers) that requires an auxiliary protein known as a lyase to incorporate phycocyanobilin (PCB).

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Oligomerization Organism Molecular Weight Cofactor
Dimer Trichodesmium erythraeum IMS101 14.9 kDa Phycocyanobilin

FPbase ID: VW66D


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TeAPCα Sequence

GenBank: CP000393.1
UniProtKB: Q10VH4
IPG: ABG53750.1


We chose TeAPCα (15 kD) [as a precursor for smURFP] because it lacked 29 amino acids common to other APCαs. Expression of TeAPCα with heme oxygenase-1 (HO-1) and phycocyanobilin–ferredoxin oxidoreductase (PcyA) for PCB production showed no fluorescence.

Rodriguez et al. (2016)

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