Repeat amino acid sequences are important in protein structure, disorder, function and evolution. Repeats of some amino acids exist in proteomes across species. This volume highlights: Which repeat sequences have pathogenic consequences and why? Repeats which lead to surface hydrophobic clusters and their importance Role of aromatic amino acid clusters in protein‐protein and protein‐drug interactions Cell‐penetrating peptides and Elastin‐like peptides Unusual phenomenon of fluorescence observed with repeats of some non‐aromatic amino acids The use of residue cluster classes to represent protein structure and model structure‐function relationships.
