Forkhead-associated domain

In molecular biology, the forkhead-associated domain is a phosphopeptide recognition domain found in many regulatory proteins. It displays specificity for phosphothreonine-containing epitopes but will also recognise phosphotyrosine with relatively high affinity. It spans approximately 80-100 amino acid residues folded into an 11-stranded beta sandwich, which sometimes contains small helical insertions between the loops connecting the strands.

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