>2r1yB (B:) observed residues (from ATOM records)
evklvesggglvqsggslrlscatsgftftdyymswvrqppgkalewlgfirnkangytt
eyspsvkgrftisrdnsqsilylqmntlraedsatyycardhdgyyerfsywgqgtlvtv
saakttppsvyplapnsmvtlgclvkgyfpepvtvtwnsgslssgvhtfpavlqsdlytl
sssvtvpsstwpsetvtcnvahpasstkvdkkivpr