Chains and heterogens:
PDB Chain Sequences:
>1xikA (A:) ayttfsqtkndqlkepmffgqpvnvarydqqkydifekliekqlsffwrpeevdvsrdri dyqalpehekhifisnlkyqtlldsiqgrspnvallplisipeletwvetwafsetihsr sythiirnivndpsvvfddivtneqiqkraegissyydeliemtsywhllgegthtvngk tvtvslrelkkklylclmsvnaleairfyvsfacsfafaerelmegnakiirliardeal hltgtqhmlnllrsgaddpemaeiaeeckqecydlfvqaaqqekdwadylfrdgsmigln kdilcqyveyitnirmqavgldlpfqtrsnpipwintwlv
>1xikB (B:) ayttfsqtkndqlkepmffgqpvnvarydqqkydifekliekqlsffwrpeevdvsrdri dyqalpehekhifisnlkyqtlldsiqgrspnvallplisipeletwvetwafsetihsr sythiirnivndpsvvfddivtneqiqkraegissyydeliemtsywhllgegthtvngk tvtvslrelkkklylclmsvnaleairfyvsfacsfafaerelmegnakiirliardeal hltgtqhmlnllrsgaddpemaeiaeeckqecydlfvqaaqqekdwadylfrdgsmigln kdilcqyveyitnirmqavgldlpfqtrsnpipwintwlvs