Beschreibung:
<jats:title>ABSTRACT</jats:title>
<jats:p>
Detergent extracts of cell envelopes of the gliding bacterium
<jats:italic>Herpetosiphon aurantiacus</jats:italic>
formed channels in lipid bilayers. Fast protein liquid chromatography across a HiTrap-Q cation-exchange column demonstrated that a 45-kDa protein forms the channel. The observation of a channel-forming protein suggests that
<jats:italic>Herpetosiphon aurantiacus</jats:italic>
Hp a2 has a permeability barrier on its surface.
</jats:p>