I've suddenly realised that the question was ambiguous! When it talked
about 'the same length' I automatically assumed it meant geometrical
length. But it could also be read to mean 'number of residues'. What
difference would this have? :-)
P.
Peter Murray-Rust, Glaxo Research & Dev. (pmr1716@ggr.co.uk); (BioMOO: PeterMR)
Birkbeck College, ubcg09q@cryst.bbk.ac.uk, CBMT/Daresbury mbglx@seqnet.dl.ac.uk
http://www.cryst.bbk.ac.uk/PPS/index.html, http://www.dl.ac.uk/CBMT/HOME.html