Chains and heterogens:
PDB Chain Sequences:
>1fqrA (A:) mshhwgygkhngpehwhkdfpiakgerqspvdidthtakydpslkplsvsydqatslril nnghafnvefddsqdkavlkggpldgtyrliqihmhvgsldgqgsehtvdkkkyaaelhl vhwntkygdfgkavqqpdglavlgiflkvgsakpglqkvvdvldsiktkgksadftnfdp rgllpesldywtypgslttppllecvtwivlkepisvsseqvlkfrklnfngegepeelm vdnwrpaqplknrqikasfk
>1fqrA (A:) hhwgygkhngpehwhkdfpiakgerqspvdidthtakydpslkplsvsydqatslrilnn ghafnvefddsqdkavlkggpldgtyrliqihmhvgsldgqgsehtvdkkkyaaelhlvh wntkygdfgkavqqpdglavlgiflkvgsakpglqkvvdvldsiktkgksadftnfdprg llpesldywtypgslttppllecvtwivlkepisvsseqvlkfrklnfngegepeelmvd nwrpaqplknrqikasfk