Chains and heterogens:
PDB Chain Sequences:
>1qqnA (A:) gpavgidlgttyscvgvfqhgkveiiandqgnrttpsyvaftdterligdaaknqvamnp tntvfdakrligrafddavvqsdmkhwpfmvvndagapkvqveykgetksfypeevssmv ltkmkeiaeaylgatvtnavvtvpayfndsqrqatkdagtiaglnvlriineptaaaiay gldkavgaernvlifdlgggtfsvsiltiedgifevkstagdthlggedfdnrmvnhfia efkrahakdisenkravrrlatacerakrtlssstqasieidslyegidfytsitrarfe elnadlfrgtldpvekalrdakldksqihdivlvggstripkiqkllqdffngkelnksi npdeavaygaavqaails