>6al4B (B:) observed residues (from ATOM records)
evqlvqsgaevkkpgssvkvsckasgyafssywmnwvrqapgqglewmgqiwpgdsdtny
aqkfqgrvtitadeststaymelsslrsedtavyycarretttvgryyyamdywgqgttv
tvssastkgpsvfplapsgtaalgclvkdyfpepvtvswnsgaltsgvhtfpavlqssgl
yslssvvtvpssslgtqtyicnvnhkpsntkvdkkvepksc