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Structural and evolutionary insights into the functioning of glycoprotein hormones and their receptors.

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Department of Biochemistry and Molecular Biophysics, Columbia University, New York, New York, USA.

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Cyclotides are a class of plant-derived cyclic peptides having a distinctive structure with a cyclic cystine knot (CCK) motif. They are stable molecules that naturally play a role in plant defense. Till date, more than 750 cyclotides have been reported among diverse plant taxa belonging to Cucurbitaceae, Violaceae, Rubiaceae, Solanaceae, and Fabaceae.

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