0.018124 0.000000 0.000000 0.000000 0.013129 0.000000 0.000000 0.000000 0.012009 0.00000 0.00000 0.00000 Kato, M. Mizuno, T. Shimizu, T. Hakoshima, T. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic 4 90.00 90.00 90.00 55.175 76.170 83.270 C3 H7 N O2 89.093 y ALANINE L-peptide linking C6 H15 N4 O2 1 175.209 y ARGININE L-peptide linking C4 H8 N2 O3 132.118 y ASPARAGINE L-peptide linking C4 H7 N O4 133.103 y ASPARTIC ACID L-peptide linking C5 H10 N2 O3 146.144 y GLUTAMINE L-peptide linking C5 H9 N O4 147.129 y GLUTAMIC ACID L-peptide linking C2 H5 N O2 75.067 y GLYCINE peptide linking C6 H10 N3 O2 1 156.162 y HISTIDINE L-peptide linking H2 O 18.015 WATER non-polymer C6 H13 N O2 131.173 y ISOLEUCINE L-peptide linking C6 H13 N O2 131.173 y LEUCINE L-peptide linking C6 H15 N2 O2 1 147.195 y LYSINE L-peptide linking C5 H11 N O2 S 149.211 y METHIONINE L-peptide linking C9 H11 N O2 165.189 y PHENYLALANINE L-peptide linking C5 H9 N O2 115.130 y PROLINE L-peptide linking C3 H7 N O3 105.093 y SERINE L-peptide linking O4 S -2 96.063 SULFATE ION non-polymer C4 H9 N O3 119.119 y THREONINE L-peptide linking C11 H12 N2 O2 204.225 y TRYPTOPHAN L-peptide linking C9 H11 N O3 181.189 y TYROSINE L-peptide linking C5 H11 N O2 117.146 y VALINE L-peptide linking DK Acta Crystallogr.,Sect.D ABCRE6 0766 0907-4449 55 1257 1263 10.1107/S0907444999005053 10393292 Structure of the histidine-containing phosphotransfer (HPt) domain of the anaerobic sensor protein ArcB complexed with the chemotaxis response regulator CheY. 1999 10.2210/pdb1bdj/pdb pdb_00001bdj 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 283 1 COLLIMATER IMAGE PLATE 1996-11 GRAPHITE(002) M x-ray 1 1.0 1.0 BL-18B Photon Factory 1.0 SYNCHROTRON PHOTON FACTORY BEAMLINE BL-18B THE RESPONSE REGULATOR 13981.136 CHEY 1 man polymer 14013.939 AEROBIC RESPIRATION CONTROL SENSOR PROTEIN ARCB 2.7.3.- HPT DOMAIN, THE HISTIDINE-CONTAINING PHOSPHOTRANSFER DOMAIN 1 man polymer 96.063 SULFATE ION 1 syn non-polymer 18.015 water 44 nat water CHEMOTAXIS PROTEIN CHEY no no ADKELKFLVVDDFSTMRRIVRNLLKELGFNNVEEAEDGVDALNKLQAGGYGFVISDWNMPNMDGLELLKTIRADGAMSAL PVLMVTAEAKKENIIAAAQAGASGYVVKPFTAATLEEKLNKIFEKLGM ADKELKFLVVDDFSTMRRIVRNLLKELGFNNVEEAEDGVDALNKLQAGGYGFVISDWNMPNMDGLELLKTIRADGAMSAL PVLMVTAEAKKENIIAAAQAGASGYVVKPFTAATLEEKLNKIFEKLGM A polypeptide(L) no no TTEENSKSEALLDIPMLEQYLELVGPKLITDGLAVFEKMMPGYVSVLESNLTAQDKKGIVEEGHKIKGAAGSVGLRHLQQ LGQQIQSPDLPAWEDNVGEWIEEMKEEWRHDVEVLKAWVAKATKK TTEENSKSEALLDIPMLEQYLELVGPKLITDGLAVFEKMMPGYVSVLESNLTAQDKKGIVEEGHKIKGAAGSVGLRHLQQ LGQQIQSPDLPAWEDNVGEWIEEMKEEWRHDVEVLKAWVAKATKK B polypeptide(L) n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n Escherichia Escherichia sample 562 Escherichia coli CYTOPLASM 562 Escherichia coli K-12 BL21 PT7-CHEY Escherichia Escherichia sample 562 Escherichia coli CYTOPLASM 562 Escherichia coli K-12 DZ225 PSU2DH 2 3.2 60 DATA WERE COLLECTED USING THE WEISSENBERG METHOD 7.0 pH 7.0 pdbx_database_status struct_conf struct_conf_type database_2 pdbx_initial_refinement_model struct_site repository Initial release Version format compliance Version format compliance Derived calculations Derived calculations Other Database references Derived calculations Refinement description 1 0 1999-05-11 1 1 2008-03-24 1 2 2011-07-13 1 3 2013-09-18 1 4 2017-11-29 1 5 2023-08-02 _pdbx_database_status.process_site _database_2.pdbx_DOI _database_2.pdbx_database_accession _struct_site.pdbx_auth_asym_id _struct_site.pdbx_auth_comp_id _struct_site.pdbx_auth_seq_id Y BNL 1998-05-10 REL REL SO4 SULFATE ION HOH water 1A0B PDB ENTRY 1A0B (HPT DOMAIN) AND 1CHN (CHEY) PDB experimental model 1CHN PDB ENTRY 1A0B (HPT DOMAIN) AND 1CHN (CHEY) PDB experimental model SO4 400 3 SO4 SO4 400 A HOH 402 4 HOH HOH 402 A HOH 403 4 HOH HOH 403 A HOH 406 4 HOH HOH 406 A HOH 407 4 HOH HOH 407 A HOH 408 4 HOH HOH 408 A HOH 409 4 HOH HOH 409 A HOH 410 4 HOH HOH 410 A HOH 412 4 HOH HOH 412 A HOH 414 4 HOH HOH 414 A HOH 417 4 HOH HOH 417 A HOH 420 4 HOH HOH 420 A HOH 421 4 HOH HOH 421 A HOH 422 4 HOH HOH 422 A HOH 430 4 HOH HOH 430 A HOH 431 4 HOH HOH 431 A HOH 434 4 HOH HOH 434 A HOH 435 4 HOH HOH 435 A HOH 436 4 HOH HOH 436 A HOH 437 4 HOH HOH 437 A HOH 438 4 HOH HOH 438 A HOH 401 4 HOH HOH 401 B HOH 404 4 HOH HOH 404 B HOH 405 4 HOH HOH 405 B HOH 411 4 HOH HOH 411 B HOH 413 4 HOH HOH 413 B HOH 415 4 HOH HOH 415 B HOH 416 4 HOH HOH 416 B HOH 418 4 HOH HOH 418 B HOH 419 4 HOH HOH 419 B HOH 423 4 HOH HOH 423 B HOH 424 4 HOH HOH 424 B HOH 425 4 HOH HOH 425 B HOH 426 4 HOH HOH 426 B HOH 427 4 HOH HOH 427 B HOH 428 4 HOH HOH 428 B HOH 429 4 HOH HOH 429 B HOH 432 4 HOH HOH 432 B HOH 433 4 HOH HOH 433 B HOH 439 4 HOH HOH 439 B HOH 440 4 HOH HOH 440 B HOH 441 4 HOH HOH 441 B HOH 442 4 HOH HOH 442 B HOH 443 4 HOH HOH 443 B HOH 444 4 HOH HOH 444 B ALA 2 n 1 ALA 2 A ASP 3 n 2 ASP 3 A LYS 4 n 3 LYS 4 A GLU 5 n 4 GLU 5 A LEU 6 n 5 LEU 6 A LYS 7 n 6 LYS 7 A PHE 8 n 7 PHE 8 A LEU 9 n 8 LEU 9 A VAL 10 n 9 VAL 10 A VAL 11 n 10 VAL 11 A ASP 12 n 11 ASP 12 A ASP 13 n 12 ASP 13 A PHE 14 n 13 PHE 14 A SER 15 n 14 SER 15 A THR 16 n 15 THR 16 A MET 17 n 16 MET 17 A ARG 18 n 17 ARG 18 A ARG 19 n 18 ARG 19 A ILE 20 n 19 ILE 20 A VAL 21 n 20 VAL 21 A ARG 22 n 21 ARG 22 A ASN 23 n 22 ASN 23 A LEU 24 n 23 LEU 24 A LEU 25 n 24 LEU 25 A LYS 26 n 25 LYS 26 A GLU 27 n 26 GLU 27 A LEU 28 n 27 LEU 28 A GLY 29 n 28 GLY 29 A PHE 30 n 29 PHE 30 A ASN 31 n 30 ASN 31 A ASN 32 n 31 ASN 32 A VAL 33 n 32 VAL 33 A GLU 34 n 33 GLU 34 A GLU 35 n 34 GLU 35 A ALA 36 n 35 ALA 36 A GLU 37 n 36 GLU 37 A ASP 38 n 37 ASP 38 A GLY 39 n 38 GLY 39 A VAL 40 n 39 VAL 40 A ASP 41 n 40 ASP 41 A ALA 42 n 41 ALA 42 A LEU 43 n 42 LEU 43 A ASN 44 n 43 ASN 44 A LYS 45 n 44 LYS 45 A LEU 46 n 45 LEU 46 A GLN 47 n 46 GLN 47 A ALA 48 n 47 ALA 48 A GLY 49 n 48 GLY 49 A GLY 50 n 49 GLY 50 A TYR 51 n 50 TYR 51 A GLY 52 n 51 GLY 52 A PHE 53 n 52 PHE 53 A VAL 54 n 53 VAL 54 A ILE 55 n 54 ILE 55 A SER 56 n 55 SER 56 A ASP 57 n 56 ASP 57 A TRP 58 n 57 TRP 58 A ASN 59 n 58 ASN 59 A MET 60 n 59 MET 60 A PRO 61 n 60 PRO 61 A ASN 62 n 61 ASN 62 A MET 63 n 62 MET 63 A ASP 64 n 63 ASP 64 A GLY 65 n 64 GLY 65 A LEU 66 n 65 LEU 66 A GLU 67 n 66 GLU 67 A LEU 68 n 67 LEU 68 A LEU 69 n 68 LEU 69 A LYS 70 n 69 LYS 70 A THR 71 n 70 THR 71 A ILE 72 n 71 ILE 72 A ARG 73 n 72 ARG 73 A ALA 74 n 73 ALA 74 A ASP 75 n 74 ASP 75 A GLY 76 n 75 GLY 76 A ALA 77 n 76 ALA 77 A MET 78 n 77 MET 78 A SER 79 n 78 SER 79 A ALA 80 n 79 ALA 80 A LEU 81 n 80 LEU 81 A PRO 82 n 81 PRO 82 A VAL 83 n 82 VAL 83 A LEU 84 n 83 LEU 84 A MET 85 n 84 MET 85 A VAL 86 n 85 VAL 86 A THR 87 n 86 THR 87 A ALA 88 n 87 ALA 88 A GLU 89 n 88 GLU 89 A ALA 90 n 89 ALA 90 A LYS 91 n 90 LYS 91 A LYS 92 n 91 LYS 92 A GLU 93 n 92 GLU 93 A ASN 94 n 93 ASN 94 A ILE 95 n 94 ILE 95 A ILE 96 n 95 ILE 96 A ALA 97 n 96 ALA 97 A ALA 98 n 97 ALA 98 A ALA 99 n 98 ALA 99 A GLN 100 n 99 GLN 100 A ALA 101 n 100 ALA 101 A GLY 102 n 101 GLY 102 A ALA 103 n 102 ALA 103 A SER 104 n 103 SER 104 A GLY 105 n 104 GLY 105 A TYR 106 n 105 TYR 106 A VAL 107 n 106 VAL 107 A VAL 108 n 107 VAL 108 A LYS 109 n 108 LYS 109 A PRO 110 n 109 PRO 110 A PHE 111 n 110 PHE 111 A THR 112 n 111 THR 112 A ALA 113 n 112 ALA 113 A ALA 114 n 113 ALA 114 A THR 115 n 114 THR 115 A LEU 116 n 115 LEU 116 A GLU 117 n 116 GLU 117 A GLU 118 n 117 GLU 118 A LYS 119 n 118 LYS 119 A LEU 120 n 119 LEU 120 A ASN 121 n 120 ASN 121 A LYS 122 n 121 LYS 122 A ILE 123 n 122 ILE 123 A PHE 124 n 123 PHE 124 A GLU 125 n 124 GLU 125 A LYS 126 n 125 LYS 126 A LEU 127 n 126 LEU 127 A GLY 128 n 127 GLY 128 A MET 129 n 128 MET 129 A n 1 652 B n 2 653 B n 3 654 B n 4 655 B n 5 656 B n 6 657 B LYS 658 n 7 LYS 658 B SER 659 n 8 SER 659 B GLU 660 n 9 GLU 660 B ALA 661 n 10 ALA 661 B LEU 662 n 11 LEU 662 B LEU 663 n 12 LEU 663 B ASP 664 n 13 ASP 664 B ILE 665 n 14 ILE 665 B PRO 666 n 15 PRO 666 B MET 667 n 16 MET 667 B LEU 668 n 17 LEU 668 B GLU 669 n 18 GLU 669 B GLN 670 n 19 GLN 670 B TYR 671 n 20 TYR 671 B LEU 672 n 21 LEU 672 B GLU 673 n 22 GLU 673 B LEU 674 n 23 LEU 674 B VAL 675 n 24 VAL 675 B GLY 676 n 25 GLY 676 B PRO 677 n 26 PRO 677 B LYS 678 n 27 LYS 678 B LEU 679 n 28 LEU 679 B ILE 680 n 29 ILE 680 B THR 681 n 30 THR 681 B ASP 682 n 31 ASP 682 B GLY 683 n 32 GLY 683 B LEU 684 n 33 LEU 684 B ALA 685 n 34 ALA 685 B VAL 686 n 35 VAL 686 B PHE 687 n 36 PHE 687 B GLU 688 n 37 GLU 688 B LYS 689 n 38 LYS 689 B MET 690 n 39 MET 690 B MET 691 n 40 MET 691 B PRO 692 n 41 PRO 692 B GLY 693 n 42 GLY 693 B TYR 694 n 43 TYR 694 B VAL 695 n 44 VAL 695 B SER 696 n 45 SER 696 B VAL 697 n 46 VAL 697 B LEU 698 n 47 LEU 698 B GLU 699 n 48 GLU 699 B SER 700 n 49 SER 700 B ASN 701 n 50 ASN 701 B LEU 702 n 51 LEU 702 B THR 703 n 52 THR 703 B ALA 704 n 53 ALA 704 B GLN 705 n 54 GLN 705 B ASP 706 n 55 ASP 706 B LYS 707 n 56 LYS 707 B LYS 708 n 57 LYS 708 B GLY 709 n 58 GLY 709 B ILE 710 n 59 ILE 710 B VAL 711 n 60 VAL 711 B GLU 712 n 61 GLU 712 B GLU 713 n 62 GLU 713 B GLY 714 n 63 GLY 714 B HIS 715 n 64 HIS 715 B LYS 716 n 65 LYS 716 B ILE 717 n 66 ILE 717 B LYS 718 n 67 LYS 718 B GLY 719 n 68 GLY 719 B ALA 720 n 69 ALA 720 B ALA 721 n 70 ALA 721 B GLY 722 n 71 GLY 722 B SER 723 n 72 SER 723 B VAL 724 n 73 VAL 724 B GLY 725 n 74 GLY 725 B LEU 726 n 75 LEU 726 B ARG 727 n 76 ARG 727 B HIS 728 n 77 HIS 728 B LEU 729 n 78 LEU 729 B GLN 730 n 79 GLN 730 B GLN 731 n 80 GLN 731 B LEU 732 n 81 LEU 732 B GLY 733 n 82 GLY 733 B GLN 734 n 83 GLN 734 B GLN 735 n 84 GLN 735 B ILE 736 n 85 ILE 736 B GLN 737 n 86 GLN 737 B SER 738 n 87 SER 738 B PRO 739 n 88 PRO 739 B ASP 740 n 89 ASP 740 B LEU 741 n 90 LEU 741 B PRO 742 n 91 PRO 742 B ALA 743 n 92 ALA 743 B TRP 744 n 93 TRP 744 B GLU 745 n 94 GLU 745 B ASP 746 n 95 ASP 746 B ASN 747 n 96 ASN 747 B VAL 748 n 97 VAL 748 B GLY 749 n 98 GLY 749 B GLU 750 n 99 GLU 750 B TRP 751 n 100 TRP 751 B ILE 752 n 101 ILE 752 B GLU 753 n 102 GLU 753 B GLU 754 n 103 GLU 754 B MET 755 n 104 MET 755 B LYS 756 n 105 LYS 756 B GLU 757 n 106 GLU 757 B GLU 758 n 107 GLU 758 B TRP 759 n 108 TRP 759 B ARG 760 n 109 ARG 760 B HIS 761 n 110 HIS 761 B ASP 762 n 111 ASP 762 B VAL 763 n 112 VAL 763 B GLU 764 n 113 GLU 764 B VAL 765 n 114 VAL 765 B LEU 766 n 115 LEU 766 B LYS 767 n 116 LYS 767 B ALA 768 n 117 ALA 768 B TRP 769 n 118 TRP 769 B VAL 770 n 119 VAL 770 B ALA 771 n 120 ALA 771 B LYS 772 n 121 LYS 772 B ALA 773 n 122 ALA 773 B THR 774 n 123 THR 774 B n 124 775 B n 125 776 B author_defined_assembly 2 dimeric 1.0000000000 0.0000000000 0.0000000000 0.0000000000 1.0000000000 0.0000000000 0.0000000000 0.0000000000 1.0000000000 1_555 x,y,z identity operation 0.0000000000 0.0000000000 0.0000000000 1 B THR 652 B THR 1 1 Y 1 B THR 653 B THR 2 1 Y 1 B GLU 654 B GLU 3 1 Y 1 B GLU 655 B GLU 4 1 Y 1 B ASN 656 B ASN 5 1 Y 1 B SER 657 B SER 6 1 Y 1 B LYS 775 B LYS 124 1 Y 1 B LYS 776 B LYS 125 1 Y 1 A ASP 13 -55.36 -98.63 1 A SER 15 -125.82 -168.28 1 A VAL 40 -60.47 -70.95 1 A ASN 62 79.20 -43.60 1 A MET 63 -165.57 116.94 1 A MET 78 -146.20 36.06 1 A GLU 89 -58.50 108.49 PARHCSDX.PRO TOPHCSDX.PRO SO4.PAR SO4.TOP 41.0 0.00 0.00 0.00 0.00 0.00 0.00 BULK SOLVENT MODEL USED 0.2500000 0.011 0.1830000 0.1830000 2.68 10.00 488 9146 5.3 90.6 RANDOM 10000000.00 0.00100 1 RESTRAINED THROUGHOUT 1.0 MOLECULAR REPLACEMENT PDB ENTRY 1A0B (HPT DOMAIN) AND 1CHN (CHEY) 0.43 0.30 5.00 0.99 0.49 2.68 10.00 44 1947 5 0 1898 0.007 1.3 21.0 1.18 1.60 1.50 2.65 2.00 2.72 2.00 4.41 2.50 0.3880000 0.061 0.3120000 2.80 40 842 8 4.5 71.7 52.3 2.68 1BDJ 9392 1 0.0780000 1 46.3 4.4 92.4 0.3600000 2.68 3.02 2.1 1 2.3 84.2 model building X-PLOR 3.851 refinement X-PLOR 3.851 data reduction WEIS data scaling CCP4 phasing X-PLOR 3.851 COMPLEX STRUCTURE OF HPT DOMAIN AND CHEY 1 N N 2 N N 3 N N 4 N N 4 N N A MET 17 A MET 16 HELX_P A GLU 27 A GLU 26 1 H1 11 A GLY 39 A GLY 38 HELX_P A GLN 47 A GLN 46 1 H2 9 A GLY 65 A GLY 64 HELX_P A ALA 74 A ALA 73 1 H3 10 A LYS 92 A LYS 91 HELX_P A ALA 101 A ALA 100 1 H4 10 A ALA 113 A ALA 112 HELX_P A LEU 127 A LEU 126 1 H5 15 A GLY 76 A GLY 75 HELX_P A MET 78 A MET 77 5 G1 3 B SER 659 B SER 8 HELX_P B LEU 662 B LEU 11 1 A 4 B ILE 665 B ILE 14 HELX_P B LEU 674 B LEU 23 1 B 10 B LYS 678 B LYS 27 HELX_P B ALA 704 B ALA 53 1 C 27 B LYS 707 B LYS 56 HELX_P B SER 723 B SER 72 1 D 17 B ARG 727 B ARG 76 HELX_P B ILE 736 B ILE 85 1 E 10 B TRP 744 B TRP 93 HELX_P B ALA 773 B ALA 122 1 F 30 COMPLEX (CHEMOTAXIS/TRANSFERASE) TWO-COMPONENT SYSTEM, HISTIDINE-CONTAINING PHOSPHOTRANSFER (HPT) DOMAIN, ARCB, RESPONSE REGULATOR, CHEY, COMPLEX (CHEMOTAXIS-TRANSFERASE), COMPLEX (CHEMOTAXIS-TRANSFERASE) complex A LYS 109 A LYS 108 1 A PRO 110 A PRO 109 0.07 CHEY_ECOLI UNP 1 1 P06143 ADKELKFLVVDDFSTMRRIVRNLLKELGFNNVEEAEDGVDALNKLQAGGYGFVISDWNMPNMDGLELLKTIRADGAMSAL PVLMVTAEAKKENIIAAAQAGASGYVVKPFTAATLEEKLNKIFEKLGM ARCB_ECOLI UNP 2 1 P22763 MKQIRLLAQYYVDLMMKLGLVRFSMLLALALVVLAIVVQMAVTMVLHGQVESIDVIRSIFFGLLITPWAVYFLSVVVEQL EESRQRLSRLVQKLEEMRERDLSLNVQLKDNIAQLNQEIAVREKAEAELQETFGQLKIEIKEREETQIQLEQQSSFLRSF LDASPDLVFYRNEDKEFSGCNRAMELLTGKSEKQLVHLKPADVYSPEAAAKVIETDEKVFRHNVSLTYEQWLDYPDGRKA CFEIRKVPYYDRVGKRHGLMGFGRDITERKRYQDALERASRDKTTFISTISHELRTPLNGIVGLSRILLDTELTAEQEKY LKTIHVSAVTLGNIFNDIIDMDKMERRKVQLDNQPVDFTSFLADLENLSALQAQQKGLRFNLEPTLPLPHQVITDGTRLR QILWNLISNAVKFTQQGQVTVRVRYDEGDMLHFEVEDSGIGIPQDELDKIFAMYYQVKDSHGGKPATGIGLAVSRRLAKN MGGDITVTSEQGKGSTFTLTIHAPSVAEEVDDAFDEDDMPLPALNVLLVEDIELNVIVARSVLEKLGNSVDVAMTGKAAL EMFKPGEYDLVLLDIQLPDMTGLDISRELTKRYPREDLPPLVALTANVLKDKQEYLNAGMDDVLSKPLSVPALTAMIKKF WDTQDDEESTVTTEENSKSEALLDIPMLEQYLELVGPKLITDGLAVFEKMMPGYVSVLESNLTAQDKKGIVEEGHKIKGA AGSVGLRHLQQLGQQIQSPDLPAWEDNVGEWIEEMKEEWRHDVEVLKAWVAKATKK 1 128 1BDJ 2 129 P06143 A 1 1 128 652 776 1BDJ 652 776 P22763 B 2 1 125 5 parallel parallel parallel parallel A LYS 7 A LYS 6 A VAL 11 A VAL 10 A VAL 33 A VAL 32 A ALA 36 A ALA 35 A TYR 51 A TYR 50 A SER 56 A SER 55 A VAL 83 A VAL 82 A THR 87 A THR 86 A GLY 105 A GLY 104 A VAL 108 A VAL 107 PHOSPHO-DONOR RESIDUE. Unknown 1 PHOSPHO-ACCEPTOR RESIDUE. Unknown 1 BINDING SITE FOR RESIDUE SO4 A 400 A SO4 400 Software 6 B HIS 715 B HIS 64 1 1_555 A ASP 57 A ASP 56 1 1_555 A ASP 57 A ASP 56 6 1_555 A TRP 58 A TRP 57 6 1_555 A ASN 59 A ASN 58 6 1_555 A THR 87 A THR 86 6 1_555 A ALA 88 A ALA 87 6 1_555 A LYS 109 A LYS 108 6 1_555 19 P 21 21 21