>1rz9B (B:) observed residues (from ATOM records)
matfyevivrvpfdveehlpgisdsfvdwvtgqiwelppesdlnltlveqpqltvadrir
rvflyewnkfskqeskffvqfekgseyfhlhtlvetsgissmvlgryvsqiraqlvkvvf
qgiepqindwvaitkvkkggankvvdsgyipayllpkvqpelqwawtnldeyklaalnle
erkrlvaqflaes