Chains and heterogens:
PDB Chain Sequences:
>1w23A (A:) vkqvfnfnagpsalpkpaleraqkellnfndtqmsvmelshrsqsyeevheqaqnllrel lqipndyqilflqggaslqftmlpmnlltkgtignyvltgswsekalkeakllgethiaa stkansyqsipdfsefqlnendaylhitsnntiygtqyqnfpeinhapliadmssdilsr plkvnqfgmiyagaqknlgpsgvtvvivkkdllntkveqvptmlqyathiksdslyntpp tfsiymlrnvldwikdlggaeaiakqneekakiiydtidesngfyvghaekgsrslmnvt fnlrneelnqqflakakeqgfvglnghrsvggcrasiynavpidacialrelmiqfkena
>1w23B (B:) vkqvfnfnagpsalpkpaleraqkellnfndtqmsvmelshrsqsyeevheqaqnllrel lqipndyqilflqggaslqftmlpmnlltkgtignyvltgswsekalkeakllgethiaa stkansyqsipdfsefqlnendaylhitsnntiygtqyqnfpeinhapliadmssdilsr plkvnqfgmiyagaqknlgpsgvtvvivkkdllntkveqvptmlqyathiksdslyntpp tfsiymlrnvldwikdlggaeaiakqneekakiiydtidesngfyvghaekgsrslmnvt fnlrneelnqqflakakeqgfvglnghrsvggcrasiynavpidacialrelmiqfkena
>1w23B (B:) vkqvfnfnagpsalpkpaleraqkellnfndtqmsvmelshrsqsyeevheqaqnllrel lqipndyqilflqggaslqftmlpmnlltkgtignyvltgswsekalkeakllgethiaa stkansyqsipdfsefqlnendaylhitsnntiygtqyqnfpeinhapliadmssdilsr plkvnqfgmiyagaqknlgpsgvtvvivkkdllveqvptmlqyathiksdslyntpptfs iymlrnvldwikdlggaeaiakqneekakiiydtidesngfyvghaekgsrslmnvtfnl rneelnqqflakakeqgfvglnghrsvggcrasiynavpidacialrelmiqfkena