>4rgnB (B:) observed residues (from ATOM records)
evnliesggdlvkpggslklscatsgftfsayglswvrqtperrlewvasisgggsvyyp
dsvkgrftisrdtagdilflqmnslrsedsaiyycvrdlygdyvgryaywgqgtlvivsa
akttppsvyplapsmvtlgclvkgyfpepvtvtwnsgslssgvhtfpavlqsdlytlsss
vtvpsstwpsetvtcnvahpasstkvdkkivpr