>2yw7B (B:) observed residues (from ATOM records)
dkkasdvadllqkqlstyndlhltlkhvhwnvvgpnfigvhemidpqvelvrgyadevae
riatlgkspkgtpgaiikdrtwddysverdtvqahlaaldlvyngviedtrksiekledl
dlvsqdlliahagelekfqwfvrah