Chains and heterogens:
PDB Chain Sequences:
>1p74A (A:) mdlyavwgnpiaqskspliqnklaaqthqtmeyiaklgdldafeqqllaffeegakgcni tspfkerayqladeysqraklaeacntlkklddgklyadntdgiglvtdlqrlnwlrpnq hvlilgaggatkgvllpllqaqqnivlanrtfsktkelaerfqpygniqavsmdsiplqt ydlvinatsaglsggtasvdaeilklgsafydmqyakgtdtpfialckslgltnvsdgfg mlvaqaahsfhlwrgvmpdfvsvyeqlkkaml
>1p74A (A:) mdlyavwgnpiaqskspliqnklaaqthqtmeyiaklgdldafeqqllaffeegakgcni tspfkerayqladeysqraklaeacntlkklddgklyadntdgiglvtdlqrlnwlrpnq hvlilgaggatkgvllpllqaqqnivlanrtfsktkelaerfqpygniqavsmdsiplqt ydlvinatsagasvdaeilklgsafydmqyakgtdtpfialckslgltnvsdgfgmlvaq aahsfhlwrgvmpdfvsvyeqlkkaml
>1p74B (B:) mdlyavwgnpiaqskspliqnklaaqthqtmeyiaklgdldafeqqllaffeegakgcni tspfkerayqladeysqraklaeacntlkklddgklyadntdgiglvtdlqrlnwlrpnq hvlilgaggatkgvllpllqaqqnivlanrtfsktkelaerfqpygniqavsmdsiplqt ydlvinatsaglsggtasvdaeilklgsafydmqyakgtdtpfialckslgltnvsdgfg mlvaqaahsfhlwrgvmpdfvsvyeqlkkaml
>1p74B (B:) mdlyavwgnpiaqskspliqnklaaqthqtmeyiaklgdldafeqqllaffeegakgcni tspfkerayqladeysqraklaeacntlkklddgklyadntdgiglvtdlqrlnwlrpnq hvlilgaggatkgvllpllqaqqnivlanrtfsktkelaerfqpygniqavsmdsiplqt ydlvinatsaasvdaeilklgsafydmqyakgtdtpfialckslgltnvsdgfgmlvaqa ahsfhlwrgvmpdfvsvyeqlkkaml