Chains and heterogens:
PDB Chain Sequences:
>2a73A (A:) spmysiitpnilrleseetmvleahdaqgdvpvtvtvhdfpgkklvlssektvltpatnh mgnvtftipanrefksekgrnkfvtvqatfgtqvvekvvlvslqsgylfiqtdktiytpg stvlyriftvnhkllpvgrtvmvnienpegipvkqdslssqnqlgvlplswdipelvnmg qwkirayyenspqqvfstefevkeyvlpsfeviveptekfyyiynekglevtitarflyg kkvegtafvifgiqdgeqrislpeslkripiedgsgevvlsrkvlldgvqnlraedlvgk slyvsatvilhsgsdmvqaersgipivtspyqihftktpkyfkpgmpfdlmvfvtnpdgs payrvpvavqgedtvqsltqgdgvaklsinthpsqkplsitvrtkkqelseaeqatrtmq alpystvgnsnnylhlsvlrtelrpgetlnvnfllrmdraheakiryytylimnkgrllk agrqvrepgqdlvvlplsittdfipsfrlvayytligasgqrevvadsvwvdvkdscvgs lvvksgqsedrqpvpgqqmtlkiegdhgarvvlvavdkgvfvlnkknkltqskiwdvvek adigctpgsgkdyagvfsdagltftsssgqqtaqraelqcpqp
>2a73A (A:) spmysiitpnilrleseetmvleahdaqgdvpvtvtvhdfpgkklvlssektvltpatnh mgnvtftipanrernkfvtvqatfgtqvvekvvlvslqsgylfiqtdktiytpgstvlyr iftvnhkllpvgrtvmvnienpegipvkqdslssqnqlgvlplswdipelvnmgqwkira yyenspqqvfstefevkeyvlpsfeviveptekfyyiynekglevtitarflygkkvegt afvifgiqdgeqrislpeslkripiedgsgevvlsrkvlldgvlraedlvgkslyvsatv ilhsgsdmvqaersgipivtspyqihftktpkyfkpgmpfdlmvfvtnpdgspayrvpva vqgedtvqsltqgdgvaklsinthpsqkplsitvrtkkqelseaeqatrtmqalpystvg nsnnylhlsvlrtelrpgetlnvnfllrmdraheakiryytylimnkgrllkagrqvrep gqdlvvlplsittdfipsfrlvayytligasgqrevvadsvwvdvkdscvgslvvksgqs edrqpvpgqqmtlkiegdhgarvvlvavdkgvfvlnkknkltqskiwdvvekadigctpg sgkdyagvfsdagltftsssgqqtaqraelqcpqp
>2a73B (B:) vqltekrmdkvgkypkelrkccedgmrenpmrfscqrrtrfislgeackkvfldccnyit elrrqharashlglarsnldediiaeenivsrsefpeswlwnvedlkeppkngistklmn iflkdsittweilavsmsdkkgicvadpfevtvmqdffidlrlpysvvrneqveiravly nyrqnqelkvrvellhnpafcslattkrrhqqtvtippksslsvpyvivplktglqevev kaavyhhfisdgvrkslkvvpegirmnktvavrtldperlgregvqkedippadlsdqvp dtesetrillqgtpvaqmtedavdaerlkhlivtpsgcgeqnmigmtptviavhyldete qwekfglekrqgalelikkgytqqlafrqpssafaafvkrapstwltayvvkvfslavnl iaidsqvlcgavkwlilekqkpdgvfqedapvihqemigglrnnnekdmaltafvlislq eakdiceeqvnslpgsitkagdfleanymnlqrsytvaiagyalaqmgrlkgpllnkflt takdknrwedpgkqlynveatsyallallqlkdfdfvppvvrwlneqryygggygstqat fmvfqalaqyqkdapdhqelnldvslqlpsrsskithrihwesasllrseetkenegftv taegkgqgtlsvvtmyhakakdqltcnkfdlkvtikpapetekrpqdakntmileictry rgdqdatmsildismmtgfapdtddlkqlangvdryiskyeldkafsdrntliiyldkvs hseddclafkvhqyfnveliqpgavkvyayynleesctrfyhpekedgklnklcrdelcr caeencfiqksddkvtleerldkacepgvdyvyktrlvkvqlsndfdeyimaieqtiksg sdevqvgqqrtfispikcrealkleekkhylmwglssdfwgekpnlsyiigkdtwvehwp eedecqdeenqkqcqdlgaftesmvvfgcpn
>2a73B (B:) vqltekrmdkvgkypkelrkccedgmrenpmrfscqrrtrfislgeackkvfldccnyit elrrqharaldediiaeenivsrsefpeswlwnvedlkeppkngistklmniflkdsitt weilavsmsdkkgicvadpfevtvmqdffidlrlpysvvrneqveiravlynyrqnqelk vrvellhnpafcslattkrrhqqtvtippksslsvpyvivplktglqevevkaavyhhfi sdgvrkslkvvpegirmnktvavrtldperlgregvqkedippadlsdqvpdtesetril lqgtpvaqmtedavdaerlkhlivtpsgcgeqnmigmtptviavhyldeteqwekfglek rqgalelikkgytqqlafrqpssafaafvkrapstwltayvvkvfslavnliaidsqvlc gavkwlilekqkpdgvfqedapvihqennnekdmaltafvlislqeakdiceeqvnslpg sitkagdfleanymnlqrsytvaiagyalaqmgrlkgpllnkflttakdknrwedpgkql ynveatsyallallqlkdfdfvppvvrwlneqryygggygstqatfmvfqalaqyqkdap dhqelnldvslqlpsrsskithrihwesasllrseetkenegftvtaegkgqgtlsvvtm yhakakdqltcnkfdlkvtikpapetekrpqdakntmileictryrgdqdatmsildism mtgfapdtddlkqlangvdryiskyeldkafsdrntliiyldkvshseddclafkvhqyf nveliqpgavkvyayynleesctrfyhpekedgklnklcrdelcrcaeencfiqksddkv tleerldkacepgvdyvyktrlvkvqlsndfdeyimaieqtiksgsdevqvgqqrtfisp ikcrealkleekkhylmwglssdfwgekpnlsyiigkdtwvehwpeedecqdeenqkqcq dlgaftesmvvfgcpn