Chains and heterogens:
PDB Chain Sequences:
>1lkmA (A:) kslkgsrtekniltafagesqarnrynyfggqakkdgfvqisdifaetadqerehakrlf kfleggdleivaafpagiiadthanliasaagehheytemypsfariareegyeeiarvf asiavaeefhekrfldfarnikegrvflreqatkwrcrncgyvhegtgapelcpacahpk ahfellginw