Substrate-binding (S) component of an energy-coupling factor (ECF) ABC-transporter complex. Mediates riboflavin uptake, may also transport FMN and roseoflavin. Probably a riboflavin-binding protein that interacts with the energy-coupling factor (ECF) ABC-transporter complex. Unlike classic ABC transporters this ECF transporter provides the energy necessary to transport a number of different substrates. The substrates themselves are bound by transmembrane, not extracytoplasmic soluble proteins (Probable). Expression of the complex plus RibU in E.coli allows riboflavin uptake.

Belongs to the prokaryotic riboflavin transporter (P-RFT) (TC 2.A.87) family.

211 amino acids

MRSLFFGIGKSIGNFFQIVKIWRNFFMTNTRKLAYIAILSAVSFLLLYFSFPLIPAADFLKVDFSILPVLIALVIFDFKSAIGVLLLRSLLKLLLNNGGPGSMIGLPMNFVALGVFVWGLSYFWKKNQTSKNYILGSVLGTILLTVAMVVLNYIYAVPLYAKFANFDIAQFIGLYKYLFAMVVPFNLLEGLIFSVAFALIYAPLKSILVKL

23.6 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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