Other structures of the Karrikin-Insensitive Protein (KAI2) in Arabidopsis thaliana will soon be available (4HRY, 4HTA, 4HRX) and are published by Bythell-Douglas et al. Crystal structures of rat Dipeptidyl Peptidase IV (DPP4, DPP-IV, CD26) in complex with 11A19 Fab, an inhibitory antibody against DPP IV which improves glucose tolerance in vivo are available (4FFV, 4FFW) and published by Tang et al. Tang et al.