Chains and heterogens:
PDB Chain Sequences:
>1qwkA (A:) mssatasiklsngvempviglgtwqsspaevitavktavkagyrlidtasvyqneeaigt aikelleegvvkreelfittkawthelapgklegglreslkklqleyvdlylahmpaafn ddmsehiaspvedvwrqfdavykaglakavgvsnwnndqisralalgltpvhnsqvelhl yfpqhdhvdfckkhnisvtsyatlgspgrvnftlptgqkldwapapsdlqdqnvlalaek thktpaqvllryaldrgcailpksiqenrikenfevfdfslteediakleesknsqrlfl qdfmtghpedafaaerk
>1qwkA (A:) tasiklsngvempviglgtwqsspaevitavktavkagyrlidtasvyqneeaigtaike lleegvvkreelfittkawthelapgklegglreslkklqleyvdlylahmpaafnddms ehiaspvedvwrqfdavykaglakavgvsnwnndqisralalgltpvhnsqvelhlyfpq hdhvdfckkhnisvtsyatlgspgrvnftlptgqkldwapapsdlqdqnvlalaekthkt paqvllryaldrgcailpksiqenrikenfevfdfslteediakleesknsqrlflqdfm tghpedafaaer