>1pgrB (B:) observed residues (from ATOM records)
agyppaspsnlsclmhlttnslvcqwepgpethlptsfilksfrsradcqyqgdtipdcv
akkrqnncsiprknlllyqymaiwvqaenmlgssespklcldpmdvkleppmlqaldigp
dqpgclwlswkpwkpseymeqecelryqpqlkganwtlvfhlpsskdqfelcglhqapvy
tlqmrcirsslpgfwspwspglqlrptm