e/TonB-dependent receptor plug domain

Information
has gloss	eng: TonB-dependent receptor plug domain is an independently folding subunit of the TonB-dependent receptors . It acts as the channel gate, blocking the pore until the channel is bound by a ligand. At this point it undergoes conformational changes and opens the channel.
lexicalization	eng: TonB-dependent receptor plug domain
instance of	c/Outer membrane proteins