1) At least four to get the H-bonding.. 2) No - depends on the number and arrangement of beta sheets. Protein structures vary a great deal!
You could find the % of residues in protein structures which form helices and beta sheets I guess but there is such huge variation that it may not be very useful Eleanr On 8 April 2013 08:43, Dr. Imtiyaz Hassan <imtaiy...@yahoo.co.uk> wrote: > Dear Friends, > I have to ask very basic question. Please provide answer with some > references. > 1. Whats are the values for maximum and minimum numbers of residues > present in one alpha helix and beta strand? > 2. Is any fixed (or with some range) for the percent of beta turns present > in protein structure? > > Thanks in advance!! > > > Dr. Hassan >
