User:Tilman Schirmer/Sandbox 125

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Common motif of arrangement of two antiparallel β-strands connected by a regular turn.

(atom colors)

use better example! Note: some side-chains have multiple conformations.

Greek key topology


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The prealbumin is a β-sandwich composed of an antiparallel and a mixed β-sheet. It forms a with the mixed β- sheets associated to a large transmolecular sheet.
Topology diagram of the monomer: Image:Prealbumin topology2.png

A consists of 4 antiparallel β-strands in the order bcda, i.e. the the 1st and 4th strand are adjacent and the 2nd and 3rd strand form a β-hairpin.

Image: prealbumin_topology_greek_key1.png

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Tilman Schirmer

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