Chains and heterogens:
PDB Chain Sequences:
>1u8nA (A:) alqltqspsslsasvgdrititcrasqgvtsalawyrqkpgsppqlliydasslesgvps rfsgsgsgteftltistlrpedfatyycqqlhfyphtfgggtrvdvrrtvaapsvfifpp sdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstyslsstlt lskadyekhkvyecevthqglsspvtksfnrgec
>1u8nB (B:) ritlkesgpplvkptqtltltcsfsgfslsdfgvgvgwirqppgkalewlaiiysdddkr yspslntrltitkdtsknqvvlvmtrvspvdtatyfcahrrgpttlfgvpiargpvnamd vwgqgitvtisststkgpsvfplapsskstagaaaalgclvkdyfpepvtvswnsgalts gvhtfpavlqssglyslssvvtvpssslgtqtytcnvnhkpsntkvdkrvepksc
>1u8nB (B:) ritlkesgpplvkptqtltltcsfsgfslsdfgvgvgwirqppgkalewlaiiysdddkr yspslntrltitkdtsknqvvlvmtrvspvdtatyfcahrrgpttlfgvpiargpvnamd vwgqgitvtisststkgpsvfplapgaaaalgclvkdyfpepvtvswnsgaltsgvhtfp avlqssglyslssvvtvpssslqtytcnvnhkpsntkvdkrvepksc