Peptides Come Round: Using SICLOPPS Libraries for Early Stage Drug Discovery

Cyclic peptides are an emerging class of molecular therapeutics that are increasingly viewed as ideal backbones for modulation of protein-protein interactions. A split-intein based method, termed SICLOPPS, enables the rapid generation of genetically encoded cyclic peptide libraries of around a hundred million members. Here we review recent approaches using SICLOPPS for the discovery of bioactive compounds.