Chains and heterogens:
PDB Chain Sequences:
>1ngb_ (-) gpavgidlgttyscvgvfqhgkveiiandqgnrttpsyvaftdterligdaaknqvamnp tntvfdakrligrrfddavvqsdmkhwpfmvvndagrpkvqveykgetksfypeevssmv ltkmkeiaeaylgktvtnavvtvpayfndsqrqatkdagtiaglnvlriinqptaaaiay gldkkvgaernvlifdlgggtfdvsiltiedgifevkstagdthlggedfdnrmvnhfia efkrkhkkdisenkravrrlrtacerakrtlssstqasieidslyegidfytsitrarfe elnadlfrgtldpvekalrdakldksqihdivlvggstripkiqkllqdffngkelnksi npdeavaygaavqaails