Protein Family Models

The Plug domain has been shown to be an independently folding subunit of the TonB-dependent receptors ([1]). It acts as the channel gate, blocking the pore until the channel is bound by ligand. At this point it under goes conformational changes opens the channel. [1]. 15111112. The plug domain of a neisserial TonB-dependent transporter retains structural integrity in the absence of its transmembrane beta-barrel. Oke M, Sarra R, Ghirlando R, Farnaud S, Gorringe AR, Evans RW, Buchanan SK;. FEBS Lett 2004;564:294-300. (from Pfam)

Date:

2024-10-16

TonB-dependent receptor plug domain-containing protein may act as a TonB-dependent siderophore receptor, a channel to allow import of iron-siderophore complexes; similar to Escherichia coli ferrienterobactin receptor, which is involved in the initial step of iron uptake by binding ferrienterobactin

Date:

2024-04-26