Chains and heterogens:
PDB Chain Sequences:
>1pq5A (A:) ivggtsasagdfpfivsisrnggpwcggsllnantvltaahcvsgyaqsgfqiragslsr tsggitsslssvrvhpsysgnnndlailklstsipsggnigyarlaasgsdpvagssatv agwgatseggsstpvnllkvtvpivsratcraqygtsaitnqmfcagvssggkdscqgds ggpivdssntligavswgngcarpnysgvyasvgalrsfidtya