>1nc4B (B:) observed residues (from ATOM records)
evklqesgpglvqpsqslsitctvsgfsltdygvhwvrqspgkglewlgviwsgggtayt
aafisrlniykdnsknqvffemnslqandtamyycarrgsypynyfdvwgqgttvtvssa
kttppsvyplapgsaaqtnsmvtlgclvkgyfpepvtvtwnsgslssgvhtfpavlqsdl
ytlsssvtvpsstwpsetvtcnvahpasstkvdkkivpr