Chains and heterogens:
PDB Chain Sequences:
>1ix3A (A:) merpqldsmsqdlsealkeatkevhiraensefmrnfqkgqvsregfklvmaslyhiyta leeeiernkqnpvyaplyfpeelhrraaleqdmafwygphwqeaipytpatqhyvkrlhe vggthpellvahaytrylgdlsggqvlkkiaqkamalpssgeglafftfpsidnptkfkq lyrarmntlemtpevkhrvteeaktafllnielfeelqallteehkdqspsqteflrqrp aslvqdttsaetprgksqistsssqtp
>1ix3A (A:) qdlsealkeatkevhiraensefmrnfqkgqvsregfklvmaslyhiytaleeeiernkq npvyaplyfpeelhrraaleqdmafwygphwqeaipytpatqhyvkrlhevggthpellv ahaytrylgdlsggqvlkkiaqkamalpssgeglafftfpsidnptkfkqlyrarmntle mtpevkhrvteeaktafllnielfeelqallteflrqrpasl