Chains and heterogens:
PDB Chain Sequences:
>1b3uA (A:) aaadgddslypiavlidelrnedvqlrlnsikklstialalgvertrsellpfltdtiyd edevllalaeqlgtfttlvggpeyvhcllppleslatveetvvrdkaveslraishehsp sdleahfvplvkrlaggdwftsrtsacglfsvcyprvssavkaelrqyfrnlcsddtpmv rraaasklgefakvleldnvkseiipmfsnlasdeqdsvrllaveacvniaqllpqedle alvmptlrqaaedkswrvrymvadkftelqkavgpeitktdlvpafqnlmkdceaevraa ashkvkefcenlsadcrenvimsqilpcikelvsdanqhvksalasvimglspilgkdnt iehllplflaqlkdecpevrlniisnldcvnevigirqlsqsllpaivelaedakwrvrl aiieympllagqlgveffdeklnslcmawlvdhvyaireaatsnlkklvekfgkewahat iipkvlamsgdpnylhrmttlfcinvlsevcgqdittkhmlptvlrmagdpvanvrfnva kslqkigpildnstlqsevkpilekltqdqdvdvkyfaqealtvlsla
>1b3uB (B:) aaadgddslypiavlidelrnedvqlrlnsikklstialalgvertrsellpfltdtiyd edevllalaeqlgtfttlvggpeyvhcllppleslatveetvvrdkaveslraishehsp sdleahfvplvkrlaggdwftsrtsacglfsvcyprvssavkaelrqyfrnlcsddtpmv rraaasklgefakvleldnvkseiipmfsnlasdeqdsvrllaveacvniaqllpqedle alvmptlrqaaedkswrvrymvadkftelqkavgpeitktdlvpafqnlmkdceaevraa ashkvkefcenlsadcrenvimsqilpcikelvsdanqhvksalasvimglspilgkdnt iehllplflaqlkdecpevrlniisnldcvnevigirqlsqsllpaivelaedakwrvrl aiieympllagqlgveffdeklnslcmawlvdhvyaireaatsnlkklvekfgkewahat iipkvlamsgdpnylhrmttlfcinvlsevcgqdittkhmlptvlrmagdpvanvrfnva kslqkigpildnstlqsevkpilekltqdqdvdvkyfaqealtvlsla