>5chtB (B:) observed residues (from ATOM records)
phglvglhnigqtcclnsllqvfmmnmdfrmilkritvprsaeerkrsvpfqlllllekm
qdsrqkavlptelvqclqkynvplfvqhdaaqlyltiwnltkdqitdtdlterlqglfti
wtqeslicvgctaessrrsklltlslplfdkdakplktledalrcfvqpkelassdmcce
scgektpwkqvlklthlpqtltihlmrfstekichsvnfpqsldfsqveihyelfaviah
vgmadfghycayirnpvdgkwfcfndshvcwvtwkdvqctygnhryrwretayllvytkt