>1s4cA (A:) observed residues (from ATOM records) miissltnpnfkvglpkviaevcdylntldlnalengrhdindqiymnvmepetaepssk kaelhheyldvqvlirgtenievgatypnlskyedyneaddyqlcadiddkftvtmkpkm favfypyephkpccvekikklvvkvpvkli