{{tag>[beta]}}
======  Beta Barrel   =======

In some instances large anti-parallel (or parallel) sheets can roll up
completely to join edges and form a cylinder or closed 'barrel', in which the
first strand is hydrogen bonded to the last. The strands form
the 'staves' of the barrel.The example shown is porin (pdb code 2por)).

{{cath:feature>2por000}}

===== References =====

{{pubmed>long:8126726}}
{{pubmed>long: 8126727}}