Chains and heterogens:
PDB Chain Sequences:
>1am1_ (-) asetfefqaeitqlmsliintvysnkeiflrelisnasdaldkirykslsdpkqletepd lfiritpkpeqkvleirdsgigmtkaelinnlgtiaksgtkafmealsagadvsmigqfg vgfyslflvadrvqvisksnddeqyiwesnaggsftvtldevnerigrgtilrlflkddq leyleekrikevikrhsefvaypiqlvvtkeve