Chains and heterogens:
PDB Chain Sequences:
>1emhA (A:) meffgeswkkhlsgefgkpyfiklmgfvaeerkhytvyppphqvftwtqmcdikdvkvvi lgqdpyhgpnqahglcfsvqrpvppppsleniykelstdiedfvhpghgdlsgwakqgvl llnavltvrahqanshkergweqftdavvswlnqnsnglvfllwgsyaqkkgsaidrkrh hvlqtahpsplsvyrgffgcrhfsktnellqksgkkpidwkel