>1y1yD (D:) observed residues (from ATOM records)
ststfqtrrrrlkkveeeenaatlqlgqefqlkqinhqgeeeelialnlsearlvikeal
verrrafkrsqkktrekelesidvlleqttggnnkdlkntmqyltnfsrfrdqetvgavi
qllkstglhpfevaqlgslacdtadeaktlipslnnkisddelerilkelsnletly