Greek key

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A simple Greek key design

A Greek Key (Gk Μαίανρος)is a repeating design element used in architecture, jewelry and fabrics. It is meant to evoke an Ancient Greek theme and stands for a symbol of Hellenism.

Its repeating design symbolises infinity; the design has been linked to images of the Labyrinth where the Minotaur was imprisoned. It can be seen in all ancient Greek buildings, tombs and shields (e.g. The shield of King Philip II of Macedonia).

Image:Anthrax toxin protein key motif.jpg

In biochemistry, the term Greek Key refers to a kind of supersecondary structure or motif of a protein (amino-acid) sequence.