Chains and heterogens:
PDB Chain Sequences:
>1e64A (A:) dvpvnlyrpnapfigkvisneplvkeggigivqhikfdltggnlkyiegqsigiippgvd kngkpeqlrlysiastrhgddvddktislcvrqleykhpesgetvygvcstylthiepgs evkitgpvgkemllpddpeanvimlatgtgiapmrtylwrmfkdaeraanpeyqfkgfsw lvfgvpttpnilykeeleeiqqkypdnfrltyaisreqknpqggrmyiqdrvaehadqlw qliknqkthtyicglrgmeegidaalsaaaakegvtwsdyqkdlkkagrwhvety