>3tzvB (B:) observed residues (from ATOM records)
adiyqtprylvigtgkkitlecsqtmghdkmywyqqdpgmelhlihysygvstekgdsse
stvsrirtehfpltlesarpshtsqylcasseegtqyfgpgtrllvledlknvfppevav
fepseaeishtqkatlvclatgfypdhvelswwvngkevhsgvctdpqplkeqpalndsr
yalssrlrvsatfwqnprnhfrcqvqfyglsendewtqdrakpvtqivsaeawgra