>1ucxB (B:) observed residues (from ATOM records)
iqklnalkpdnriesegglietwnpnnkpfqcagvalsrctlnrnalrrpsytngpqeiy
iqqgkgifgmiypgcpstrhqkiynfregdliavptgvawwmynnedtpvvavsiidtns
lenqldqmprrfylagnqeqeflkyqqggsilsgftleflehafsvdkqiaknlqgekga
ivtvkgglsvikpictmrlrhnigqtsspdiynpqagsvttatsldfpalswlrlsaefg
slrknamfvphynlnansiiyalngraliqvvncngervfdgelqegrvlivpqnfvvaa
rsqsdnfeyvsfktndtpmigtlagansllnalpeeviqhtfnlksqqarqiknnnpfkf
lvppqes