Chains and heterogens:
PDB Chain Sequences:
>6prn_ (-) mislngygrfglqyvedrgvgledtiissrlrinivgttetdqgvtfgaalamqwddgda fagtagnaaqfwtsyngvtvsvgnvdtafdsvaltydsemgyeassfgdaqssffaynsk ydasgaldnyngiavtysisgvnlylsyvdpdqtvdsslvteefgiaadwsndmislaaa yttdaggivdndiafvgaaykfndagtvglnwydnglstagdqvtlygnyafgattvray vsdidragadtaygigadyqfaegvkvsgsvqsgfanetvadvgvrfdf