>1nc4B (B:) SEQRES residues evklqesgpglvqpsqslsitctvsgfsltdygvhwvrqspgkglewlgviwsgggtayt aafisrlniykdnsknqvffemnslqandtamyycarrgsypynyfdvwgqgttvtvssa kttppsvyplapgsaaqtnsmvtlgclvkgyfpepvtvtwnsgslssgvhtfpavlqsdl ytlsssvtvpsstwpsetvtcnvahpasstkvdkkivprdc