Chains and heterogens:
PDB Chain Sequences:
>1bu6O (O:) tekkyivaldqgttssravvmdhdaniisvsqrefeqiypkpgwvehdpmeiwatqsstl vevltkadissdqiaaigitnqrettivweketgkpiynaivwqcrrtaeicehlkrdgl edyirsntglvidpyfsgtkvkwildhvegsrerarrgellfgtvdtwliwkmtqgrvhv tdytnasrtmlfnihtldwddkmlevldipremlpevrrssevygqtniggkggtripis giagdqqaalfgqlcvkegmakntygtgcfmlmntgekavksengllttiacgptgevny alegavfmagasiqwlrdemklindaydseyfatkvqntngvyvvpaftglgapywdpya rgaifgltrgvnanhiiratlesiayqtrdvleamqadsgirlhalrvdggavannflmq fqsdilgtrverpevrevtalgaaylaglavgfwqnldelqekavierefrpgiettern yryagwkkavkramaweehde
>1bu6O (O:) kkyivaldqgttssravvmdhdaniisvsqrefeqiypkpgwvehdpmeiwatqsstlve vltkadissdqiaaigitnqrettivweketgkpiynaivwqcrrtaeicehlkrdgled yirsntglvidpyfsgtkvkwildhvegsrerarrgellfgtvdtwliwkmtqgrvhvtd ytnasrtmlfnihtldwddkmlevldipremlpevrrssevygqtniggkggtripisgi agdqqaalfgqlcvkegmakntygtgcfmlmntgekavksengllttiacgptgevnyal egavfmagasiqwlrdemklindaydseyfatkvqntngvyvvpaftglgapywdpyarg aifgltrgvnanhiiratlesiayqtrdvleamqadsgirlhalrvdggavannflmqfq sdilgtrverpevrevtalgaaylaglavgfwqnldelqekavierefrpgietternyr yagwkkavkramaweeh
>1bu6X (X:) tekkyivaldqgttssravvmdhdaniisvsqrefeqiypkpgwvehdpmeiwatqsstl vevltkadissdqiaaigitnqrettivweketgkpiynaivwqcrrtaeicehlkrdgl edyirsntglvidpyfsgtkvkwildhvegsrerarrgellfgtvdtwliwkmtqgrvhv tdytnasrtmlfnihtldwddkmlevldipremlpevrrssevygqtniggkggtripis giagdqqaalfgqlcvkegmakntygtgcfmlmntgekavksengllttiacgptgevny alegavfmagasiqwlrdemklindaydseyfatkvqntngvyvvpaftglgapywdpya rgaifgltrgvnanhiiratlesiayqtrdvleamqadsgirlhalrvdggavannflmq fqsdilgtrverpevrevtalgaaylaglavgfwqnldelqekavierefrpgiettern yryagwkkavkramaweehde
>1bu6X (X:) kkyivaldqgttssravvmdhdaniisvsqrefeqiypkpgwvehdpmeiwatqsstlve vltkadissdqiaaigitnqrettivweketgkpiynaivwqcrrtaeicehlkrdgled yirsntglvidpyfsgtkvkwildhvegsrerarrgellfgtvdtwliwkmtqgrvhvtd ytnasrtmlfnihtldwddkmlevldipremlpevrrssevygqtniggkggtripisgi agdqqaalfgqlcvkegmakntygtgcfmlmntgekavksengllttiacgptgevnyal egavfmagasiqwlrdemklindaydseyfatkvqntngvyvvpaftglgapywdpyarg aifgltrgvnanhiiratlesiayqtrdvleamqadsgirlhalrvdggavannflmqfq sdilgtrverpevrevtalgaaylaglavgfwqnldelqekavierefrpgietternyr yagwkkavkramaweehd
>1bu6Y (Y:) tekkyivaldqgttssravvmdhdaniisvsqrefeqiypkpgwvehdpmeiwatqsstl vevltkadissdqiaaigitnqrettivweketgkpiynaivwqcrrtaeicehlkrdgl edyirsntglvidpyfsgtkvkwildhvegsrerarrgellfgtvdtwliwkmtqgrvhv tdytnasrtmlfnihtldwddkmlevldipremlpevrrssevygqtniggkggtripis giagdqqaalfgqlcvkegmakntygtgcfmlmntgekavksengllttiacgptgevny alegavfmagasiqwlrdemklindaydseyfatkvqntngvyvvpaftglgapywdpya rgaifgltrgvnanhiiratlesiayqtrdvleamqadsgirlhalrvdggavannflmq fqsdilgtrverpevrevtalgaaylaglavgfwqnldelqekavierefrpgiettern yryagwkkavkramaweehde
>1bu6Y (Y:) ekkyivaldqgttssravvmdhdaniisvsqrefeqiypkpgwvehdpmeiwatqsstlv evltkadissdqiaaigitnqrettivweketgkpiynaivwqcrrtaeicehlkrdgle dyirsntglvidpyfsgtkvkwildhvegsrerarrgellfgtvdtwliwkmtqgrvhvt dytnasrtmlfnihtldwddkmlevldipremlpevrrssevygqtniggkggtripisg iagdqqaalfgqlcvkegmakntygtgcfmlmntgekavksengllttiacgptgevnya legavfmagasiqwlrdemklindaydseyfatkvqntngvyvvpaftglgapywdpyar gaifgltrgvnanhiiratlesiayqtrdvleamqadsgirlhalrvdggavannflmqf qsdilgtrverpevrevtalgaaylaglavgfwqnldelqekavierefrpgietterny ryagwkkavkramaweehd
>1bu6Z (Z:) tekkyivaldqgttssravvmdhdaniisvsqrefeqiypkpgwvehdpmeiwatqsstl vevltkadissdqiaaigitnqrettivweketgkpiynaivwqcrrtaeicehlkrdgl edyirsntglvidpyfsgtkvkwildhvegsrerarrgellfgtvdtwliwkmtqgrvhv tdytnasrtmlfnihtldwddkmlevldipremlpevrrssevygqtniggkggtripis giagdqqaalfgqlcvkegmakntygtgcfmlmntgekavksengllttiacgptgevny alegavfmagasiqwlrdemklindaydseyfatkvqntngvyvvpaftglgapywdpya rgaifgltrgvnanhiiratlesiayqtrdvleamqadsgirlhalrvdggavannflmq fqsdilgtrverpevrevtalgaaylaglavgfwqnldelqekavierefrpgiettern yryagwkkavkramaweehde
>1bu6Z (Z:) kkyivaldqgttssravvmdhdaniisvsqrefeqiypkpgwvehdpmeiwatqsstlve vltkadissdqiaaigitnqrettivweketgkpiynaivwqcrrtaeicehlkrdgled yirsntglvidpyfsgtkvkwildhvegsrerarrgellfgtvdtwliwkmtqgrvhvtd ytnasrtmlfnihtldwddkmlevldipremlpevrrssevygqtniggkggtripisgi agdqqaalfgqlcvkegmakntygtgcfmlmntgekavksengllttiacgptgevnyal egavfmagasiqwlrdemklindaydseyfatkvqntngvyvvpaftglgapywdpyarg aifgltrgvnanhiiratlesiayqtrdvleamqadsgirlhalrvdggavannflmqfq sdilgtrverpevrevtalgaaylaglavgfwqnldelqekavierefrpgietternyr yagwkkavkramaweehd