>6hu4B (B:) observed residues (from ATOM records)
mdidpykefgatvellsflpsdffpsvrdlldtasalyrealespehcsphhtalrqail
cwgelmtlatwvgvnledpasrdlvvsyvntnmglklrqllwfhiscltfgretvieylv
sfgvwirtppayrppnapilstlpettvvrr