>1x77A (A:) observed residues (from ATOM records)
ikvlgisgslrsgsynsaalqeaiglvppgmsieladisgiplynedvyalgfppaverf
reqiraadallfatpeynysmagvlknaidwasrppeqpfsgkpaailgasagrfgtara
qyhlrqtlvfldvhplnkpevmissaqnafdaqgrllddkareliqqqlqalql