>1y12B (B:) SEQRES residues
snamavdmfikigdvkgeskdkthaeeidvlawswgmsqsgsmhmgggggagkvnvqdls
ftkyidkstpnlmmacssgkhypqakltirkaggenqveyliitlkevlvssvstggsgg
edrltenvtlnfaqvqvdyqpqkadgakdggpvkygwnirqnvqa