Chains and heterogens:
PDB Chain Sequences:
>1qanA (A:) sqnfitskhnidkimtnirlnehdnifeigsgkghftlelvqrcnfvtaieidhklcktt enklvdhdnfqvlnkdilqfkfpknqsykifgnipynistdiirkivfdsiadeiylive ygfakrllntkrslalflmaevdisilsmvpreyfhpkpkvnsslirlnrkksrishkdk qkynyfvmkwvnkeykkiftknqfnnslkhagiddlnnisfeqflslfnsyklfnk