>1g4bM (M:) observed residues (from ATOM records)
ttivsvrrnghvviagdgqatlgntvmkgnvkkvrrlyndkviagfaggtadaftlfelf
erklemhqghlvkaavelakdwrtdrmlrkleallavadetasliitgngdvvqpendli
aigsggpyaqaaarallentelsareiaekaldiagdiciytnhfhtieelsy