>1u7zA (A:) observed residues (from ATOM records)
vndlkhlnimitagptrepldpvryisdhssgkmgfaiaaaaarrganvtlvsgpvslpt
ppfvkrvdvmtalemeaavnasvqqqnifigcaavadyraatvapekideltikmvknpd
ivagvaalkdhrpyvvgfaaetnnveeyarqkrirknldlicandvsqptqgfnsdnnal
hlfwqdgdkvlplerkellgqllldeivtrydeknr