Chains and heterogens:
PDB Chain Sequences:
>6bvzA (A:) sgdyrvqntsleaivqnassdnqgiqlsavqaarkllssdrnppiddliksgilpilvhc lerddnpslqfeaawaltniasgtseqtqavvqsnavplflrllhsphqnvceqavwalg niigdgpqcrdyvislgvvkpllsfispsipitflrnvtwvmvnlcrhkdppppmetiqe ilpalcvlihhtdvnilvdtvwalsyltdagneqiqmvidsgivphlvpllshqevkvqt aalravgnivtgtdeqtqvvlncdalshfpallthpkekinkeavwflsnitagnqqqvq avidanlvpmiihlldkgdfgtqkeaawaisnltisgrkdqvayliqqnvippfcnlltv kdaqvvqvvldglsnilkmaedeaetignlieecgglekieqlqnhenediyklayeiid qffssddidedpslvpeaiqggtfgfnssanvptegfqf
>6bvzA (A:) sleaivqnassdnqgiqlsavqaarkllssdrnppiddliksgilpilvhclerddnpsl qfeaawaltniasgtseqtqavvqsnavplflrllhsphqnvceqavwalgniigdgpqc rdyvislgvvkpllsfispsipitflrnvtwvmvnlcrhkdppppmetiqeilpalcvli hhtdvnilvdtvwalsyltdagneqiqmvidsgivphlvpllshqevkvqtaalravgni vtgtdeqtqvvlncdalshfpallthpkekinkeavwflsnitagnqqqvqavidanlvp miihlldkgdfgtqkeaawaisnltisgrkdqvayliqqnvippfcnlltvkdaqvvqvv ldglsnilkmaedeaetignlieecgglekieqlqnhenediyklayeiidqffs