TB500 Fragment (17-23)

TB500 Fragment (17-23) is a short synthetic peptide, just seven amino acids long, that copies the core actin-binding stretch of the larger thymosin beta-4 protein. It is best known in research for this central LKKTETQ motif, which makes it a handy stand-in for studying how the full peptide grips actin.

It also draws on a solid research base built around thymosin beta-4, with published lab work exploring its activity (Sosne et al., 2003, FASEB Journal). That is why this defined fragment is a useful reference point for structure-activity work.

Research Applications

Supplied as a lyophilized powder for stability.