Chains and heterogens:
PDB Chain Sequences:
>1kwrA (A:) mshhwgygkhngpehwhkdfpiakgerqspvdidthtakydpslkplsvsydqatslril nnghafnvefddsqdkavlkggpldgtyrliqfhfhwgsldgqgsehtvdkkkyaaelhl vhwntkygdfgkavqqpdglavlgiflkvgsakpglqkvvdvldsiktkgksadftnfdp rgllpesldywtypgslttppllecvtwivlkepisvsseqvlkfrklnfngegepeelm vdnwrpaqplknrqikasfk
>1kwrA (A:) hhwgygkhngpehwhkdfpiakgerqspvdidthtakydpslkplsvsydqatslrilnn ghafnvefddsqdkavlkggpldgtyrliqfhfhwgsldgqgsehtvdkkkyaaelhlvh wntkygdfgkavqqpdglavlgiflkvgsakpglqkvvdvldsiktkgksadftnfdprg llpesldywtypgslttppllecvtwivlkepisvsseqvlkfrklnfngegepeelmvd nwrpaqplknrqikasfk