>4pchB (B:) observed residues (from ATOM records)
vevldtvpltedtqykveavllpnfgkaattgnfqsrglpytmsdtlgpgaalcysvavi
nlpeipdamcedtmivweayrletellfapqmassgyqrangtlagiegtqlyfwacggg
pldviginpdperlkvnealegpgnsdvaslqalrkqvnaanfpvelwvadptkndntry
fgrvvgggvtppvvsygnqsttplidengvgilctfgsvyltsadmvgmtglpglptlsa
dysnqrtvqagygrffrvhcrqrrik