Chains and heterogens:
PDB Chain Sequences:
>4s1yA (A:) dahksevahrfkdlgeenfkalvliafaqylqqcpfedhvklvnevtefaktcvadesae ncdkslhtlfgdklctvatlretygemadccakqepernecflqhkddnpnlprlvrpev dvmctafhdneetflkkylyeiarrhpyfyapellffakrykaafteccqaadkaacllp kldelrdegkassakqrlkcaslqkfgerafkawavarlsqrfpkaefaevsklvtdltk vhtecchgdllecaddradlakyicenqdsissklkeccekpllekshciaevendempa dlpslaadfveskdvcknyaeakdvflgmflyeyarrhpdysvvlllrlaktyettlekc caaadphecyakvfdefkplveepqnlikqncelfeqlgeykfqnallvrytkkvpqvst ptlvevsrnlgkvgskcckhpeakrmpcaedylsvvlnqlcvlhektpvsdrvtkcctes lvnrrpcfsalevdetyvpkefnaetftfhadictlsekerqikkqtalvelvkhkpkat keqlkavmddfaafvekcckaddketcfaeegkklvaasqaalgl
>4s1yA (A:) sevahrfkdlgeenfkalvliafaqylqqcpfedhvklvnevtefaktcvadesaencdk slhtlfgdklctdccakqepernecflqhkddnpnlprlvrpevdvmctafhdneetflk kylyeiarrhpyfyapellffakrykaafteccqaadkaacllpkldelrdegkassakq rlkcaslqkfgerafkawavarlsqrfpkaefaevsklvtdltkvhtecchgdllecadd radlakyicenqdsissklkeccekpllekshciaevendempadlpslaadfveskdvc knyaeakdvflgmflyeyarrhpdysvvlllrlaktyettlekccaaadphecyakvfde fkplveepqnlikqncelfeqlgeykfqnallvrytkkvpqvstptlvevsrnlgkvgsk cckhpeakrmpcaedylsvvlnqlcvlhektpvsdrvtkccteslvnrrpcfsalevdet yvpkeictlsekerqikkqtalvelvkhkpkatkeqlkavmddfaafvekcckaddketc fae