Chains and heterogens:
PDB Chain Sequences:
>1ay4A (A:) mlgnlkpqapdkilalmgefradprqgkidlgvgvykdatghtpimravhaaeqrmlete ttktyaglsgepefqkamgelilgdglksettatlatvggtgalrqalelarmanpdlrv fvsdptwpnhvsimnfmglpvqtyryfdaetrgvdfegmkadlaaakkgdmvllhgcchn ptganltldqwaeiasilektgalplidlayqgfgdgleedaagtrliasripevliaas csknfgiyrertgcllalcadaatrelaqgamaflnrqtysfppfhgakivstvlttpel radwmaeleavrsgmlrlreqlagelrdlsgsdrfgfvaehrgmfsrlgatpeqvkrike efgiymvgdsriniaglndntipilaraiievgv
>1ay4B (B:) mlgnlkpqapdkilalmgefradprqgkidlgvgvykdatghtpimravhaaeqrmlete ttktyaglsgepefqkamgelilgdglksettatlatvggtgalrqalelarmanpdlrv fvsdptwpnhvsimnfmglpvqtyryfdaetrgvdfegmkadlaaakkgdmvllhgcchn ptganltldqwaeiasilektgalplidlayqgfgdgleedaagtrliasripevliaas csknfgiyrertgcllalcadaatrelaqgamaflnrqtysfppfhgakivstvlttpel radwmaeleavrsgmlrlreqlagelrdlsgsdrfgfvaehrgmfsrlgatpeqvkrike efgiymvgdsriniaglndntipilaraiievgv
>1ay4B (B:) mlgnlkpqlalmgefradprqgkidlgvgvykdatghtpimravhaaeqrmletettkty aglsgepefqkamgelilgdglksettatlatvggtgalrqalelarmanpdlrvfvsdp twpnhvsimnfmglpvqtyryfdaetrgvdfegmkadlaaakkgdmvllhgcchnptgan ltldqwaeiasilektgalplidlayqgfgdgleedaagtrliasripevliaascsknf giyrertgcllalcadaatrelaqgamaflnrqtysfppfhgakivstvlttpelradwm aeleavrsgmlrlreqlagelrdlsgsdrfgfvaehrgmfsrlgatpeqvkrikeefgiy mvgdsriniaglndntipilaraiievgv