Chains and heterogens:
PDB Chain Sequences:
>1s7cA (A:) mtikvgingfgrigrivfraaqkrsdieivaindlldadymaymlkydsthgrfdgtvev kdghlivngkkirvtaerdpanlkwdevgvdvvaeatglfltdetarkhitagakkvvmt gpskdntpmfvkganfdkyagqdivsnascttnclaplakvindnfgiieglmttvhatt atqktvdgpshkdwrggrgasqniipsstgaakavgkvlpelngkltgmafrvptpnvsv vdltvrlekaatyeqikaavkaaaegemkgvlgyteddvvstdfngevctsvfdakagia lndnfvklvswydnetgysnkvldliahisk
>1s7cA (A:) tikvgingfgrigrivfraaqkrsdieivaindlldadymaymlkydsthgrfdgtvevk dghlivngkkirvtaerdpanlkwdevgvdvvaeatglfltdetarkhitagakkvvmtg pskdntpmfvkganfdkyagqdivsnascttnclaplakvindnfgiieglmttvhatta tqktvdgpshkdwrggrgasqniipsstgaakavgkvlpelngkltgmafrvptpnvsvv dltvrlekaatyeqikaavkaaaegemkgvlgyteddvvstdfngevctsvfdakagial ndnfvklvswydnetgysnkvldliahisk