>1l3aB (B:) observed residues (from ATOM records)
tpkvfvgysiykgkaaltveprspefspldsgafklsregmvmlqfapaagvrqydwsrk
qvfslsvteigsiislgtkdsceffhdpnkgrsdegrvrkvlkveplpdgsghffnlsvq
nklinldeniyipvtkaefavlvsafnfvmpyllgwhtavnsfkpeaele