>5sx1B (B:) observed residues (from ATOM records)
gtsnrdwwpnqldlsilhrhsslsdpmgkdfnyaqafekldlaavkrdlhalmttsqdww
padfghygglfirmawhsagtyrtadgrggagegqqrfaplnswpenanldkarrllwpi
kqkygraiswadlliltgnvalesmgfktfgfaggradtwepedvywgsekiwlelsggp
nsrysgdrqlenplaavqmgliyvnpegpdgnpdpvaaardirdtfarmamndeetvali
agghtfgkthgagpasnvgaepeaagieaqglgwksayrtgkgadaitsglevtwtttpt
qwshnffenlfgyeweltkspagahqwvakgadavipdafdpskkhrptmlttdlslrfd
payekisrrfhenpeqfadafarawfklthrdmgprarylgpevpaevllwqdpipavdh
plidaadaaelkakvlasgltvsqlvstawaaastfrgsdkrggangarirlapqkdwea
nqpeqlaavletleairtafngaqrggkqvsladlivlagcagveqaaknaghavtvpfa
pgradasqeqtdvesmavlepvadgfrnylkgkyrvpaevllvdkaqlltlsapemtvll
gglrvlganvgqsrhgvftareqaltndffvnlldmgtewkptaadadvfegrdratgel
kwtgtrvdlvfgshsqlralaevygsadaqekfvrdfvavwnkvmnldrfdla