>4v3fB (B:) observed residues (from ATOM records)
piparqlfidgewrepikknripvinpsteeiigdipaataedvevavvaarrafrrnnw
satsgahratylraiaakitekkdhfvkletidsgkpfdeavldiddvascfeyfagqae
aldgkqkapvtlpmerfkshvlrqplgvvglispwnypllmatwkiapalaagctavlkp
selasvtclefgevcnevglppgvlniltglgpdagaplvshpdvdkiaftgssatgskv
masaaqlvkpvtlelggkspivvfedvdidkvvewtifgcfwtngqicsatsrllvhesi
aaefvdklvkwtknikisdpfeegcrlgpviskgqydkimkfistaksegatilyggsrp
ehlkkgyyieptivtdistsmqiwkeevfgpvlcvktfssedeaialandteyglaaavf
sndlerceritkalevgavwvncsqpcfvqapwggikrsgfgrelgewgiqnylnikqvt
qdisdepwgwyksp