Chains and heterogens:
PDB Chain Sequences:
>1pi6A (A:) mssislkeiippqpstqrnftthlsydpttnaiaypcgksafvrclddgdskvppvvqft ghgssvvttvkfspikgsqylcsgdesgkvivwgwtfdkesnsvevnvksefqvlagpis diswdfegrrlcvvgegrdnfgvfiswdsgnslgevsghsqrinachlkqsrpmrsmtvg ddgsvvfyqgppfkfsasdrthhkqgsfvrdvefspdsgefvitvgsdrkiscfdgksge flkyieddqepvqggifalswldsqkfatvgadatirvwdvttskcvqkwtldkqqlgnq qvgvvatgngriislsldgtlnfyelghdevlktisghnkgitaltvnplisgsydgrim ewssssmhqdhsnlivsldnskaqeyssiswddtlkvngitkhefgsqpkvasanndgft avltndddllilqsftgdiiksvrlnspgsavslsqnyvavgleegntiqvfklsdlevs fdlktplrakpsyisispsetyiaagdvmgkillydlqsrevktsrwafrtskinaiswk paekganeeeieedlvatgsldtnifiysvkrpmkiikalnahkdgvnnllwetpstlvs sgadacikrwnvvle
>1pi6A (A:) ssislkeiippqpstqrnftthlsydpttnaiaypcgksafvrclddgdskvppvvqftg hgssvvttvkfspikgsqylcsgdesgkvivwgwtfdkesnsvevnvksefqvlagpisd iswdfegrrlcvvgegrdnfgvfiswdsgnslgevsghsqrinachlkqsrpmrsmtvgd dgsvvfyqgppfkfsasdrthhkqgsfvrdvefspdsgefvitvgsdrkiscfdgksgef lkyieddqepvqggifalswldsqkfatvgadatirvwdvttskcvqkwtldkqqlgnqq vgvvatgngriislsldgtlnfyelghdevlktisghnkgitaltvnplisgsydgrime wssssmhqdhsnlivsldnskaqeyssiswddtlkvngitkhefgsqpkvasanndgfta vltndddllilqsftgdiiksvrlnspgsavslsqnyvavgleegntiqvfklsdlevsf dlktplrakpsyisispsetyiaagdvmgkillydlqsrevktsrwafrtskinaiswkp aeeieedlvatgsldtnifiysvkrpmkiikalnahkdgvnnllwetpstlvssgadaci krwnvv