>4um4B (B:) observed residues (from ATOM records)
sllnvpagkdlpediyvvieipanadpikyeidkesgalfvdrfmstamfypcnygyinh
tlsldgdpvdvlvptpyplqpgsvircrpvgvlkmtdeagedaklvavphsklskeydhi
kdvndlpellkaqiahffehykdlekgkwvkvegwenaeaakaeivasferaknk