>4s1fB (B:) observed residues (from ATOM records)
helyldtsdvvavkalsrifplagvttnpsiiaagkkpldvvlpqlheamggqgrlfaqv
mattaegmvndalklrsiiadivvkvpvtaeglaaikmlkaegiptlgtavygaaqglls
alagaeyvapyvnridaqggsgiqtvtdlhqllkmhapqakvlaasfktprqaldcllag
cesitlpldvaqqmisypavdaavakfeqdwqgafgrtsi