>7b73A (A:) observed residues (from ATOM records)
shhhhhhssglvprgsnsqlagkrilvtqadtfmgptlcevfaemgaeviadnnlltdpa
lpakiiqqaghidvlvinlaipapftkgelvddsewsatfsavvdpmprlctavlpqmie
rqggkilvmgsasalrgmkrastysaargaqlsyvkamgvemapqgiqinaiaqnfvdnp
tyfpeetkanpkfqerlkrdvplgrlvslredalfaaylcsdaadcfvgqvfpvsggwav