>4rshB (B:) observed residues (from ATOM records)
ntkvvaigdsftfgypgntenswpavlgqtsqievvnkglksqtaqdlysrfdadvlaek
pgrviifvgngdaikevpletfqqhikamvekaesnhiipilalplpytgvqntikefre
wessyakeknilvldfatvlmdadnvylegllskeanypskegyklmgeyasrvl