The pattern of common supersecondary structure (motifs) in protein database

Supersecondary motifs have been analysed in 240 proteins defined at resolutions of 0.25 nm or better. Using five classes of residue conformation (a,b,e,l,t) in the non-regular structure regions, we have identified 50 classes that occur at least five times, and eleven classes that occur more than twenty-five times. The sequence pattern of the eleven most frequently occurring motifs have been characterised. The results should be useful for homology modelling and structure prediction