>5ksuB (B:) observed residues (from ATOM records)
spedfvyqfkgmcyftngtervrlvsrsiynreeivrfdsdvgefravtllglpaaeywn
sqkdilerkraavdrvcrhnyqlelrttlqrrveptvtispsnllvcsvtdfypaqikvr
wfrndqeetagvvstplirngdwtfqilvmlemtpqrgdvytchvehpslqspitvewra