Chains and heterogens:
PDB Chain Sequences:
>4sknE (E:) meffgeswkkhlsgefgkpyfiklmgfvaeerkhytvyppphqvftwtqmcdikdvkvvi lgqnpyhgpnqahglcfsvqrpvppppsleniykelstdiedfvhpghgdlsgwakqgvl llnavltvrahqanshkergweqftdavvswlnqnsnglvfllwgsyaqkkgsaidrkrh hvlqtahpsprsvyrgffgcrhfsktnellqksgkkpidwkel