Chains and heterogens:
PDB Chain Sequences:
>1ehnA (A:) aapgkptiawgntkfaivevdqaataynnlvkvknaadvsvswnlwngdtgttakvllng keawsgpstgssgtanfkvnkggryqmqvalcnadgctasdateivvadtdgshlaplke plleknkpykqnsgkvvgsyfvewgvygrnftvdkipaqnlthllygfipicggnginds lkeiegsfqalqrscqgredfkvsihdpfaalqkaqkgvtawddpykgnfgqlmalkqah pdlkilpsiggwtlsdpfffmgdkvkrdrfvgsvkeflqtwkffdgvdidwqfpggkgan pnlgspqdgetyvllmkelramldqlsvetgrkyeltsaisagkdkidkvaynvaqnsmd hiflmsydfygafdlknlghqtalnapawkpdtayttvngvnallaqgvkpgkivvgtam ygrgwtgvngyqnnipftgtatgpvkgtwengivdyrqiagqfmsgewqytydataeapy vfkpstgdlitfddarsvqakgkyvldkqlgglfsweidadngdilnsmnaslgnsagvq