>4n09A (A:) observed residues (from ATOM records)
mssaplrvyvqcnplldvsahvsdeflvkyglergtaillserqkgifddiekmpnvryv
pggsglnvarvaqwmqqaykgkfvtyvgciaddrygkvlkeaaehegivmavehttkags
gacavcitgkertlvadlgaanhlssehmrspavvramdesrifyfsgftltvdvnhvlq
acrkarevdglfminlsapfimqffsaqlgevlpytdiivanrheakefanmmkwdtdcv
eeiarravsevpytgtkgrvvvftrdiestvlatkdgvetvpvpqldqdkvidmngagda
fmggflsayavgkdlrrccetghytaqeviqrdgcsfpekpsfsp