Chains and heterogens:
PDB Chain Sequences:
>1emk_ (-) elftgvvpilveldgdvnghkfsvsgegegdatygkltlkficttgklpvpwptlvttls ygvqcfsrypdhmkrhdffksampegyvqertiffkddgnyktraevkfegdtlvnriel kgidfkedgnilghkleynynshnvyimadkqkngikvnfktrhniedgsvqladhyqqn tpigdgpvllpdnhylstqsalskdpnekrdhmvllefvtaagi