>1ygsA (A:) observed residues (from ATOM records) apeywcsiayfemdvqvgetfkvpsscpivtvdgyvdpsggdrfclgqlsnvhrteaier arlhigkgvqleckgegdvwvrclsdhavfvqsyyldreagrapgdavhkiypsayikvf dlrqchrqmqqqaataqavddlrrlcilrmsfvkgwgpdyprqsiketpcwieihlhral qlldevlhtm