Chains and heterogens:
PDB Chain Sequences:
>1r7aA (A:) mknkvqlityadrlgdgtiksmtdilrtrfdgvydgvhilpfftpfdgadagfdpidhtk vderlgswddvaelskthnimvdaivnhmsweskqfqdvlakgeeseyypmfltmssvfp ngateedlagiyrprpglpfthykfagktrlvwvsftpqqvdidtdsdkgweylmsifdq maashvsyirldavgygakeagtscfmtpktfklisrlreegvkrgleilievhsyykkq veiaskvdrvydfalpplllhalstghvepvahwtdirpnnavtvldthdgigvidigsd qldrslkglvpdedvdnlvntihanthgesqaatgaaasnldlyqvnstyysalgcndqh yiaaravqfflpgvpqvyyvgalagkndmellrktnngrdinrhyystaeidenlkrpvv kalnalakfrneldafdgtfsyttdddtsisftwrgetsqatltfepkrglgvdnttpva mlewedsagdhrsddlianppvva
>1r7aB (B:) mknkvqlityadrlgdgtiksmtdilrtrfdgvydgvhilpfftpfdgadagfdpidhtk vderlgswddvaelskthnimvdaivnhmsweskqfqdvlakgeeseyypmfltmssvfp ngateedlagiyrprpglpfthykfagktrlvwvsftpqqvdidtdsdkgweylmsifdq maashvsyirldavgygakeagtscfmtpktfklisrlreegvkrgleilievhsyykkq veiaskvdrvydfalpplllhalstghvepvahwtdirpnnavtvldthdgigvidigsd qldrslkglvpdedvdnlvntihanthgesqaatgaaasnldlyqvnstyysalgcndqh yiaaravqfflpgvpqvyyvgalagkndmellrktnngrdinrhyystaeidenlkrpvv kalnalakfrneldafdgtfsyttdddtsisftwrgetsqatltfepkrglgvdnttpva mlewedsagdhrsddlianppvva