Chains and heterogens:
PDB Chain Sequences:
>1e42A (A:) mgsshhhhhhssglvprgshmgmapggyvapkavwlpavkakgleisgtfthrqghiyme mnftnkalqhmtdfaiqfnknsfgvipstplaihtplmpnqsidvslplntlgpvmkmep lnnlqvavknnidvfyfscliplnvlfvedgkmerqvflatwkdipnenelqfqikechl nadtvssklqnnnvytiakrnvegqdmlyqslkltngiwilaelriqpgnpnytlslkcr apevsqyiyqvydsilkn
>1e42A (A:) ggyvapkavwlpavkakgleisgtfthrqghiymemnftnkalqhmtdfaiqfnknsfgv ipstplaihtplmpnqsidvslplntlgpvmkmeplnnlqvavknnidvfyfscliplnv lfvedgkmerqvflatwkdipnenelqfqikechlnadtvssklqnnnvytiakrnvegq dmlyqslkltngiwilaelriqpgnpnytlslkcrapevsqyiyqvydsilkn
>1e42B (B:) mgsshhhhhhssglvprgshmgmapggyvapkavwlpavkakgleisgtfthrqghiyme mnftnkalqhmtdfaiqfnknsfgvipstplaihtplmpnqsidvslplntlgpvmkmep lnnlqvavknnidvfyfscliplnvlfvedgkmerqvflatwkdipnenelqfqikechl nadtvssklqnnnvytiakrnvegqdmlyqslkltngiwilaelriqpgnpnytlslkcr apevsqyiyqvydsilkn
>1e42B (B:) ggyvapkavwlpavkakgleisgtfthrqghiymemnftnkalqhmtdfaiqfnknsfgv ipstplaihtplmpnqsidvslplntlgpvmkmeplnnlqvavknnidvfyfscliplnv lfvedgkmerqvflatwkdipnenelqfqikechlnadtvssklqnnnvytiakrnvegq dmlyqslkltngiwilaelriqpgnpnytlslkcrapevsqyiyqvydsilkn