>1r13A (A:) observed residues (from ATOM records)
deelqtelyeikhqilqtmgvlslqgsmlsvgdkvfstngqsvnfdtikemctraggnia
vprtpeeneaiasiakkynnyvylgmiedqtpgdfhyldgasvsytnwypgeprgqgkek
cvemytdgtwndrgclqyrlavcef