>1i12B (B:) observed residues (from ATOM records)
slpdgfyirrmeegdleqvtetlkvlttvgtitpesfcklikywneatvwnkkimqynpm
vivdkrtetvaatgniiierkiihelglcghiediavnskyqgqglgkllidqlvtigfd
ygcykiildcdeknvkfyekcgfsnagvemqirk