Where may I find a statistical analysis of the length of alpha-helices and beta-strands in a representative set of globular proteins?
Please see: Sandeep Kumar and Manju Bansal. 1998. Geometrical and sequence characteristics of alpha helices in globular proteins. Biophysical Journal, 75, 4, 1935 – 1944. PMID 9746534 There are some statistics on this for DSSP, DEFINE and STRIDE secondary structure definitions for the Rost and Sander 126 protein set in: Cuff, J. A. and Barton, G. J. (1999), “Evaluation and improvement of multiple sequence methods for protein secondary structure prediction”,PROTEINS, 34, 508-519. PMID 10081963 The paper includes a Figure that shows the distribution of lengths.