>4xauB (B:) observed residues (from ATOM records)
sglvprgshmiplfkvavsptaldrvaevfasgylgqgprvaefesalaarlgnprvvsv
hsgtsglclalrlldapeerdevlstpltfeatnwailadgrritwvdvdpatltmdldd
lerkispatraiivvhwtgypvdldrlagildraerehgfrpaviedcahawgasyrgvp
lgshgnmcvfsfqalkhltcgdgglltlpgdelheramlrrfygidrtadrlrgaydvae
wglkwhmtdlnaaiglanletvdeqlrlhrenaafydkeltgvpglellqrspdregsfy
vydvkvddrpafhrkmeaagimaglvsrrndehscvahlrtslpgldsvydrmvslpvgw
wlteqdrehvvatirsgw