1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 De Silva, T.M. Veglia, G. Opella, S.J. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic C3 H7 N O2 89.093 y ALANINE 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 Cu 1 63.546 COPPER (I) ION non-polymer C3 H7 N O2 S 121.158 y CYSTEINE 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 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 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 US Proteins PSFGEY 0867 0887-3585 61 1038 1049 10.1002/prot.20639 16211579 Solution structures of the reduced and Cu(I) bound forms of the first metal binding sequence of ATP7A associated with Menkes disease. 2005 10.2210/pdb1kvj/pdb pdb_00001kvj 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 1 SINGLE WAVELENGTH M 1 1.0 8691.849 Copper-transporting ATPase 1 3.6.3.4 RESIDUES 1-79 1 man polymer 63.546 COPPER (I) ION 1 syn non-polymer Menkes disease-associated protein no no MDPSMGVNSVTISVEGMTCNSCVWTIEQQIGKVNGVHHIKVSLEEKNATIIYDPKLQTPKTLQEAIDDMGFDAVIHNPD MDPSMGVNSVTISVEGMTCNSCVWTIEQQIGKVNGVHHIKVSLEEKNATIIYDPKLQTPKTLQEAIDDMGFDAVIHNPD A 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 human Homo Escherichia Escherichia coli sample 9606 Homo sapiens 469008 Escherichia coli BL21(DE3) BL21DE3 Plasmid pMal database_2 pdbx_struct_assembly pdbx_struct_conn_angle pdbx_struct_oper_list struct_conn struct_site repository Initial release Version format compliance Version format compliance Database references Derived calculations 1 0 2003-11-18 1 1 2008-04-27 1 2 2011-07-13 1 3 2022-02-23 _database_2.pdbx_DOI _database_2.pdbx_database_accession _pdbx_struct_conn_angle.ptnr1_auth_comp_id _pdbx_struct_conn_angle.ptnr1_auth_seq_id _pdbx_struct_conn_angle.ptnr1_label_atom_id _pdbx_struct_conn_angle.ptnr1_label_comp_id _pdbx_struct_conn_angle.ptnr1_label_seq_id _pdbx_struct_conn_angle.ptnr3_auth_comp_id _pdbx_struct_conn_angle.ptnr3_auth_seq_id _pdbx_struct_conn_angle.ptnr3_label_atom_id _pdbx_struct_conn_angle.ptnr3_label_comp_id _pdbx_struct_conn_angle.ptnr3_label_seq_id _pdbx_struct_conn_angle.value _struct_conn.pdbx_dist_value _struct_conn.ptnr1_auth_comp_id _struct_conn.ptnr1_auth_seq_id _struct_conn.ptnr1_label_asym_id _struct_conn.ptnr1_label_atom_id _struct_conn.ptnr1_label_comp_id _struct_conn.ptnr1_label_seq_id _struct_conn.ptnr2_auth_comp_id _struct_conn.ptnr2_auth_seq_id _struct_conn.ptnr2_label_asym_id _struct_conn.ptnr2_label_atom_id _struct_conn.ptnr2_label_comp_id _struct_conn.ptnr2_label_seq_id _struct_site.pdbx_auth_asym_id _struct_site.pdbx_auth_comp_id _struct_site.pdbx_auth_seq_id Solution structure of the reduced form of the first heavy metal binding motif of the Menkes protein RCSB Y RCSB 2002-01-26 REL REL CU1 COPPER (I) ION structures with the lowest energy 50 10 6.5 1 atm 295 K 20 mM Na Acetate buffer, 10 mM DTT, 1 mM EDTA, 0.01% Na Azide, 1 mM Protein H2O/D2O collection UXNMR data analysis NMRCompass Brunger refinement X-PLOR 600 Bruker DMX CYS 19 2 CU1 CU1 85 A MET 1 n 1 MET 1 A ASP 2 n 2 ASP 2 A PRO 3 n 3 PRO 3 A SER 4 n 4 SER 4 A MET 5 n 5 MET 5 A GLY 6 n 6 GLY 6 A VAL 7 n 7 VAL 7 A ASN 8 n 8 ASN 8 A SER 9 n 9 SER 9 A VAL 10 n 10 VAL 10 A THR 11 n 11 THR 11 A ILE 12 n 12 ILE 12 A SER 13 n 13 SER 13 A VAL 14 n 14 VAL 14 A GLU 15 n 15 GLU 15 A GLY 16 n 16 GLY 16 A MET 17 n 17 MET 17 A THR 18 n 18 THR 18 A CYS 19 n 19 CYS 19 A ASN 20 n 20 ASN 20 A SER 21 n 21 SER 21 A CYS 22 n 22 CYS 22 A VAL 23 n 23 VAL 23 A TRP 24 n 24 TRP 24 A THR 25 n 25 THR 25 A ILE 26 n 26 ILE 26 A GLU 27 n 27 GLU 27 A GLN 28 n 28 GLN 28 A GLN 29 n 29 GLN 29 A ILE 30 n 30 ILE 30 A GLY 31 n 31 GLY 31 A LYS 32 n 32 LYS 32 A VAL 33 n 33 VAL 33 A ASN 34 n 34 ASN 34 A GLY 35 n 35 GLY 35 A VAL 36 n 36 VAL 36 A HIS 37 n 37 HIS 37 A HIS 38 n 38 HIS 38 A ILE 39 n 39 ILE 39 A LYS 40 n 40 LYS 40 A VAL 41 n 41 VAL 41 A SER 42 n 42 SER 42 A LEU 43 n 43 LEU 43 A GLU 44 n 44 GLU 44 A GLU 45 n 45 GLU 45 A LYS 46 n 46 LYS 46 A ASN 47 n 47 ASN 47 A ALA 48 n 48 ALA 48 A THR 49 n 49 THR 49 A ILE 50 n 50 ILE 50 A ILE 51 n 51 ILE 51 A TYR 52 n 52 TYR 52 A ASP 53 n 53 ASP 53 A PRO 54 n 54 PRO 54 A LYS 55 n 55 LYS 55 A LEU 56 n 56 LEU 56 A GLN 57 n 57 GLN 57 A THR 58 n 58 THR 58 A PRO 59 n 59 PRO 59 A LYS 60 n 60 LYS 60 A THR 61 n 61 THR 61 A LEU 62 n 62 LEU 62 A GLN 63 n 63 GLN 63 A GLU 64 n 64 GLU 64 A ALA 65 n 65 ALA 65 A ILE 66 n 66 ILE 66 A ASP 67 n 67 ASP 67 A ASP 68 n 68 ASP 68 A MET 69 n 69 MET 69 A GLY 70 n 70 GLY 70 A PHE 71 n 71 PHE 71 A ASP 72 n 72 ASP 72 A ALA 73 n 73 ALA 73 A VAL 74 n 74 VAL 74 A ILE 75 n 75 ILE 75 A HIS 76 n 76 HIS 76 A ASN 77 n 77 ASN 77 A PRO 78 n 78 PRO 78 A ASP 79 n 79 ASP 79 A author_defined_assembly 1 monomeric A CYS 19 A O CYS 19 1_555 A CU1 85 B CU CU1 1_555 A CYS 19 A SG CYS 19 1_555 79.0 A CYS 19 A O CYS 19 1_555 A CU1 85 B CU CU1 1_555 A SER 21 A OG SER 21 1_555 114.7 A CYS 19 A SG CYS 19 1_555 A CU1 85 B CU CU1 1_555 A SER 21 A OG SER 21 1_555 89.3 A CYS 19 A O CYS 19 1_555 A CU1 85 B CU CU1 1_555 A CYS 22 A N CYS 22 1_555 62.4 A CYS 19 A SG CYS 19 1_555 A CU1 85 B CU CU1 1_555 A CYS 22 A N CYS 22 1_555 132.2 A SER 21 A OG SER 21 1_555 A CU1 85 B CU CU1 1_555 A CYS 22 A N CYS 22 1_555 82.9 A CYS 19 A O CYS 19 1_555 A CU1 85 B CU CU1 1_555 A CYS 22 A SG CYS 22 1_555 99.6 A CYS 19 A SG CYS 19 1_555 A CU1 85 B CU CU1 1_555 A CYS 22 A SG CYS 22 1_555 145.2 A SER 21 A OG SER 21 1_555 A CU1 85 B CU CU1 1_555 A CYS 22 A SG CYS 22 1_555 121.5 A CYS 22 A N CYS 22 1_555 A CU1 85 B CU CU1 1_555 A CYS 22 A SG CYS 22 1_555 72.6 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 A N LYS 40 A N LYS 40 A O THR 49 A O THR 49 A O TYR 52 A O TYR 52 A N ASN 8 A N ASN 8 A N SER 13 A N SER 13 A O VAL 74 A O VAL 74 1 A A OG1 HZ3 THR LYS 18 46 1.30 1 A A OE1 HZ1 GLN LYS 28 32 1.37 1 A A OG1 HG1 THR THR 11 49 1.38 1 A A HZ1 OE1 LYS GLU 60 64 1.39 1 A A O HZ2 LEU LYS 43 46 1.40 1 A A OD1 HZ2 ASP LYS 53 55 1.44 1 A A HG O SER VAL 13 74 1.46 1 A A HG1 OE2 THR GLU 61 64 1.49 1 A A HG OE1 SER GLU 42 44 1.50 1 A A O HG PRO SER 3 4 1.52 1 A A O HZ3 GLY LYS 6 55 1.52 1 A A H O LYS THR 40 49 1.57 1 A A O H ASN TYR 8 52 1.58 1 A A H O ILE ALA 12 48 1.58 2 A A HZ2 OG LYS SER 40 42 1.29 2 A A HZ1 OE1 LYS GLN 60 63 1.35 2 A A HZ2 OE2 LYS GLU 60 64 1.38 2 A A OD2 HZ2 ASP LYS 53 55 1.38 2 A A OE2 HZ1 GLU LYS 15 46 1.38 2 A A O HG1 SER THR 21 25 1.40 2 A A OG1 HG1 THR THR 11 49 1.41 2 A A HG1 OG1 THR THR 58 61 1.43 2 A A O H ASN TRP 20 24 1.46 2 A A HZ1 O LYS VAL 40 41 1.46 2 A A O H GLN ASP 63 67 1.48 2 A A O H ILE ALA 12 48 1.49 2 A A O H ASP GLN 53 57 1.49 2 A A H O VAL ILE 10 50 1.51 2 A A HG OE1 SER GLU 42 45 1.53 2 A A H O ILE ALA 12 48 1.54 2 A A H O LYS THR 40 49 1.55 2 A A O H CYS CYS 19 22 1.59 2 A A O HZ3 GLU LYS 15 46 1.60 3 A A HZ1 OG LYS SER 40 42 1.30 3 A A O HZ1 LEU LYS 43 46 1.41 3 A A HG1 OG1 THR THR 11 49 1.43 3 A A HZ1 OD1 LYS ASP 60 79 1.45 3 A A OD1 HZ1 ASP LYS 53 55 1.50 3 A A OE1 HG1 GLN THR 57 61 1.53 3 A A HZ3 OE1 LYS GLU 40 45 1.53 3 A A O H GLN ASP 63 67 1.54 3 A A O H CYS CYS 19 22 1.55 3 A A H O ASN TYR 8 52 1.56 4 A A OE1 HZ2 GLN LYS 28 32 1.34 4 A A O HZ2 GLU LYS 44 46 1.35 4 A A OD1 HZ2 ASP LYS 53 55 1.39 4 A A OE1 HZ3 GLN LYS 29 32 1.40 4 A A OG1 HG1 THR THR 11 49 1.42 4 A A HZ2 OE1 LYS GLU 60 64 1.43 4 A A O H ASP GLN 53 57 1.48 4 A A H O ILE ALA 12 48 1.49 4 A A O H MET CYS 17 19 1.50 4 A A OE1 HG1 GLN THR 57 61 1.51 4 A A H O ASN TYR 8 52 1.51 4 A A O HZ1 GLN LYS 28 32 1.55 4 A A O H LYS THR 40 49 1.55 4 A A H O VAL ILE 10 50 1.57 4 A A O H ASN TYR 8 52 1.60 4 A A O HG1 GLY THR 16 18 1.60 5 A A O HG1 SER THR 21 25 1.40 5 A A OD2 HZ2 ASP LYS 53 55 1.41 5 A A OE1 HZ2 GLU LYS 15 46 1.42 5 A A HZ3 OD2 LYS ASP 60 79 1.43 5 A A HZ1 O LYS VAL 40 41 1.44 5 A A HG O SER VAL 13 74 1.46 5 A A OE2 HZ3 GLU LYS 27 40 1.46 5 A A H O ILE ALA 12 48 1.46 5 A A OD1 HH ASN TYR 8 52 1.47 5 A A HG1 OG1 THR THR 11 49 1.49 5 A A H O ASN TYR 8 52 1.50 5 A A O H LYS THR 40 49 1.52 5 A A O H CYS CYS 19 22 1.54 5 A A HE21 OG1 GLN THR 57 61 1.55 5 A A HZ1 O LYS ASP 60 79 1.57 5 A A O H GLN ASP 63 67 1.60 6 A A HZ2 OG LYS SER 40 42 1.31 6 A A OG HZ1 SER LYS 4 55 1.32 6 A A OG1 HG1 THR THR 58 61 1.38 6 A A O HZ2 PRO LYS 3 55 1.39 6 A A HZ1 O LYS VAL 40 41 1.39 6 A A O HZ3 GLU LYS 44 46 1.41 6 A A HG1 OG1 THR THR 11 49 1.42 6 A A O H MET CYS 17 19 1.44 6 A A HZ2 O LYS ASP 60 79 1.45 6 A A O HG1 SER THR 21 25 1.48 6 A A HG OE1 SER GLU 42 45 1.52 6 A A O H ASN TRP 20 24 1.58 6 A A H O ILE ALA 12 48 1.58 6 A A H O VAL ILE 10 50 1.58 7 A A OG HZ1 SER LYS 4 55 1.28 7 A A OE2 HZ2 GLU LYS 44 46 1.39 7 A A OG1 HG1 THR THR 11 49 1.40 7 A A O HZ3 ILE LYS 39 40 1.40 7 A A OE2 HZ1 GLU LYS 27 40 1.41 7 A A OD1 HZ2 ASP LYS 53 55 1.42 7 A A HZ3 OE1 LYS GLU 60 64 1.45 7 A A O H ASN TRP 20 24 1.46 7 A A O HG1 SER THR 21 25 1.46 7 A A H OE1 GLY GLN 35 57 1.50 7 A A O H LYS THR 40 49 1.51 7 A A HG OE1 SER GLU 42 45 1.52 7 A A H O ILE ALA 12 48 1.52 7 A A O H VAL GLU 23 27 1.53 7 A A O H CYS CYS 19 22 1.53 7 A A H O ASN TYR 8 52 1.54 7 A A H O VAL ILE 10 50 1.54 7 A A HG1 OE2 THR GLU 61 64 1.54 7 A A H OD1 THR ASN 11 77 1.55 7 A A O HZ3 MET LYS 17 46 1.58 7 A A HH OXT TYR ASP 52 79 1.60 8 A A HZ3 OG LYS SER 40 42 1.29 8 A A HZ1 OE1 LYS GLU 60 64 1.37 8 A A O HZ3 PRO LYS 54 55 1.41 8 A A O HZ3 GLU LYS 44 46 1.43 8 A A OG1 HG1 THR THR 11 49 1.44 8 A A OE1 HZ3 GLN LYS 28 32 1.44 8 A A O HZ1 LEU LYS 43 46 1.47 8 A A HH O TYR ASP 52 79 1.48 8 A A H O ILE ALA 12 48 1.51 8 A A H O VAL ILE 10 50 1.52 8 A A HE21 OG1 GLN THR 57 61 1.52 8 A A O HG1 THR THR 58 61 1.54 8 A A HG OE2 SER GLU 42 45 1.56 8 A A O H CYS CYS 19 22 1.56 8 A A HZ2 O LYS VAL 40 41 1.56 8 A A O H LYS THR 40 49 1.57 8 A A HG O SER VAL 13 74 1.57 8 A A H O ASN TYR 8 52 1.58 9 A A HZ1 OG LYS SER 40 42 1.32 9 A A HZ1 OE1 LYS GLN 60 63 1.35 9 A A OE1 HZ3 GLN LYS 28 32 1.39 9 A A HG O SER VAL 13 74 1.41 9 A A OG1 HG1 THR THR 11 49 1.41 9 A A OG HD1 SER HIS 13 76 1.43 9 A A OG1 HG1 THR THR 58 61 1.43 9 A A O HZ2 GLN LYS 28 32 1.43 9 A A OD1 HZ3 ASP LYS 53 55 1.46 9 A A O HZ1 LEU LYS 43 46 1.50 9 A A HH OXT TYR ASP 52 79 1.52 9 A A O HZ3 GLU LYS 44 46 1.53 9 A A HE22 O GLN ALA 29 65 1.53 9 A A H O VAL ILE 10 50 1.53 9 A A HG OE1 SER GLU 42 45 1.55 9 A A O H CYS CYS 19 22 1.56 9 A A O H SER VAL 13 74 1.58 10 A A OD1 HZ3 ASP LYS 53 55 1.35 10 A A HZ2 OG LYS SER 40 42 1.35 10 A A O HZ1 GLY LYS 31 32 1.39 10 A A HZ3 O LYS PRO 60 78 1.40 10 A A O HZ1 GLY LYS 6 55 1.42 10 A A OE2 HZ2 GLU LYS 15 46 1.42 10 A A HZ2 OD1 LYS ASP 60 79 1.43 10 A A HG1 OG1 THR THR 11 49 1.45 10 A A HZ1 O LYS VAL 40 41 1.46 10 A A H O LYS THR 40 49 1.50 10 A A H O ASN TYR 8 52 1.50 10 A A OD1 HH ASN TYR 8 52 1.51 10 A A H O ILE ALA 12 48 1.51 10 A A HE22 O GLN ALA 29 65 1.54 10 A A H O VAL ILE 10 50 1.54 10 A A HE21 OG1 GLN THR 57 61 1.55 10 A A O HG1 THR THR 58 61 1.56 10 A A HG OE1 SER GLU 42 45 1.59 1 A SER 4 -177.43 40.67 1 A THR 18 -71.59 49.17 1 A ASN 20 -14.97 -51.55 1 A ASN 34 -163.04 -76.75 1 A HIS 38 -170.83 121.10 1 A PRO 59 -62.78 8.32 1 A ASN 77 -109.93 -66.20 2 A VAL 7 69.08 158.40 2 A THR 18 -147.22 -27.65 2 A ASN 34 -178.86 -52.13 2 A LYS 46 37.15 59.47 2 A ASP 72 -56.62 92.98 3 A CYS 19 -170.07 139.33 3 A ASN 20 -23.09 -45.44 3 A ASN 34 -173.46 -32.14 3 A ILE 75 -156.39 -135.56 3 A HIS 76 -103.70 53.52 4 A MET 5 62.79 -61.28 4 A THR 18 61.51 -48.50 4 A ASN 20 -29.28 -40.97 4 A ASN 34 -179.58 -53.62 4 A HIS 38 -170.40 122.88 5 A MET 17 -28.13 97.49 5 A CYS 19 178.76 173.81 5 A ASN 20 -38.34 -36.65 5 A ASN 34 -162.22 -66.77 5 A ASP 72 -48.39 107.87 5 A VAL 74 -168.91 103.72 5 A ILE 75 -157.65 -137.83 5 A HIS 76 -104.65 71.14 6 A MET 5 46.51 28.32 6 A VAL 7 64.81 174.99 6 A THR 18 58.93 -42.84 6 A CYS 19 179.02 163.49 6 A ASN 20 -35.13 -36.71 6 A ASN 34 -175.39 -60.38 6 A PRO 54 -67.63 57.61 6 A LYS 55 -135.47 -66.25 6 A VAL 74 -117.51 -134.70 7 A SER 4 -141.17 -22.49 7 A VAL 7 67.97 165.78 7 A CYS 19 -178.99 139.64 7 A ASN 20 -23.08 -46.12 7 A ASN 34 -169.66 -68.07 7 A SER 42 -108.84 -101.04 7 A LEU 43 -179.13 -92.41 7 A PRO 54 -64.67 70.31 7 A LYS 55 -172.24 -45.48 8 A SER 4 -156.01 29.02 8 A MET 5 -41.45 107.05 8 A ASN 20 -25.80 -40.67 8 A ASN 34 -178.47 -60.29 8 A HIS 38 -171.39 145.41 8 A PRO 54 -68.54 66.20 8 A LYS 55 -164.11 -55.30 8 A PRO 78 -83.59 46.38 9 A MET 5 -52.45 92.03 9 A THR 18 -146.91 -41.15 9 A ASN 20 -31.72 -36.88 9 A ASN 34 -171.04 -51.64 9 A SER 42 -152.40 86.02 9 A LEU 56 -131.44 -46.64 9 A ILE 75 -35.40 137.25 10 A SER 4 -175.20 29.48 10 A CYS 19 179.13 164.40 10 A ASN 20 -38.58 -32.91 10 A ASN 34 -175.95 -54.86 10 A SER 42 -151.00 85.49 10 A LYS 46 36.60 66.80 10 A LYS 55 -176.54 -46.88 10 A ASP 72 -54.06 104.03 10 A ILE 75 -49.83 152.47 Solution Structure of the Cu(I) bound form of the first heavy metal binding motif of the Menkes protein 1 N N 2 N N A ASN 20 A ASN 20 HELX_P A LYS 32 A LYS 32 1 1 13 A THR 58 A THR 58 HELX_P A GLY 70 A GLY 70 1 2 13 metalc 2.134 A CYS 19 A O CYS 19 1_555 A CU1 85 B CU CU1 1_555 metalc 2.147 A CYS 19 A SG CYS 19 1_555 A CU1 85 B CU CU1 1_555 metalc 1.974 A SER 21 A OG SER 21 1_555 A CU1 85 B CU CU1 1_555 metalc 2.709 A CYS 22 A N CYS 22 1_555 A CU1 85 B CU CU1 1_555 metalc 2.161 A CYS 22 A SG CYS 22 1_555 A CU1 85 B CU CU1 1_555 HYDROLASE Menkes, Cu-bound, Hydrolase ATP7A_HUMAN UNP 1 1 Q04656 MDPSMGVNSVTISVEGMTCNSCVWTIEQQIGKVNGVHHIKVSLEEKNATIIYDPKLQTPKTLQEAIDDMGFDAVIHNPD 1 79 1KVJ 1 79 Q04656 A 1 1 79 4 anti-parallel anti-parallel anti-parallel A HIS 38 A HIS 38 A SER 42 A SER 42 A ASN 47 A ASN 47 A TYR 52 A TYR 52 A ASN 8 A ASN 8 A GLU 15 A GLU 15 A ASP 72 A ASP 72 A ILE 75 A ILE 75 BINDING SITE FOR RESIDUE CU1 A 85 A CU1 85 Software 3 A CYS 19 A CYS 19 3 1_555 A SER 21 A SER 21 3 1_555 A CYS 22 A CYS 22 3 1_555