>4fw1B (B:) observed residues (from ATOM records)
glgplqiwqtdftleprmaprswlavtvdtassaivvtqhgrvtsvavqhhwataiavlg
rpkaiktdngdaftskstrewlarwgiahttgipgnsqgqamvcranrllkdkirvlaeg
dgfmkriptskqgellakamyalnhkergentktpiqkhwrptvltegppvkirietgew
ekgwnvlvwgrgyaavknrdtdkviwvpsrkvkpdi