The folding of an immunoglobulin-like Greek key protein is defined by a common-core nucleus and regions constrained by topology.

Abstract excerpt

TNfn3, the third fibronectin type III domain of human tenascin, is an immunoglobulin-like protein that is a good model for experimental and theoretical analyses of Greek key folding. The third fibronectin type III domain of human tenascin folds and unfolds in a two-state fashion over a range of temperature and pH values, and in the presence of stabilising salts. Here, we present a high resolution protein...

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