>4yfwA (A:) observed residues (from ATOM records)
ldgpytpdssnlpsnywylinplndgvvfsvtnnstfwmftylilpntaqtnvtvnvmne
tvnisidnsgstyrfvdyfktsstqsyrqrnylitehrlqayrrdesgnisnywgsstyg
dlrvgtyfnpvlnavinlnadfyiipdsqqekcteyikggl