Chains and heterogens:
PDB Chain Sequences:
>1y4jA (A:) atsmvqlqggrflmgtnspdsrdgegpvreatvkpfaidifpvtnkdfrdfvrekkyrte aemfgwsfvfedfvsdelrnkatqpmksvlwwlpvekafwrqpagpgsgirerlehpvlh vswndaraycawrgkrlpteeewefaargglkgqvypwgnwfqpnrtnlwqgkfpkgdka edgfhgvspvnafpaqnnyglydllgnvwewtaspyqaaeqdmrvlrgaswidtadgsan hrarvttrmgntpdsasdnlgfrcaadagrppgelrgshhhhhh
>1y4jA (A:) tsmvqlqggrflmgtnspdsrdgegpvreatvkpfaidifpvtnkdfrdfvrekkyrtea emfgwsfvfedfvsdelrnkaqpmksvlwwlpvekafwrqpagpgsgirerlehpvlhvs wndaraycawrgkrlpteeewefaargglkgqvypwgnwfqpnrtnlwqgkfpkgdkaed gfhgvspvnafpaqnnyglydllgnvwewtaspyqaaeqdmrvlrgaswidtadgsanhr arvttrmgntpdsasdnlgfrcaada
>1y4jB (B:) atsmvqlqggrflmgtnspdsrdgegpvreatvkpfaidifpvtnkdfrdfvrekkyrte aemfgwsfvfedfvsdelrnkatqpmksvlwwlpvekafwrqpagpgsgirerlehpvlh vswndaraycawrgkrlpteeewefaargglkgqvypwgnwfqpnrtnlwqgkfpkgdka edgfhgvspvnafpaqnnyglydllgnvwewtaspyqaaeqdmrvlrgaswidtadgsan hrarvttrmgntpdsasdnlgfrcaadagrppgelrgshhhhhh
>1y4jB (B:) atsmvqlqggrflmgtnspdsrdgegpvreatvkpfaidifpvtnkdfrdfvrekkyrte aemfgwsfvfedfvsdelrnkatqpmksvlwwlpvekafwrqpagpgsgirerlehpvlh vswndaraycawrgkrlpteeewefaargglkgqvypwgnwfqpnrtnlwqgkfpkgdka edgfhgvspvnafpaqnnyglydllgnvwewtaspyqaaeqdmrvlrgaswidtadgsan hrarvttrmgntpdsasdnlgfrcaada