>4q91B (B:) observed residues (from ATOM records)
hhhhhfnlppgnykkpvllyasngghflrilpdgtvdgtrdrsdqhiqlqlsaesvgevy
ikstetgqylamdtdgllygsqtpneeclflerleenhyntyiskkhaeknwfvglkkng
svkrgprthygqkailflvlpv