0.013371 0.007720 0.000000 0.000000 0.015439 0.000000 0.000000 0.000000 0.011250 0.00000 0.00000 0.00000 Edwards, S.H. Thompson, D. Baker, S.F. Wood, S.P. Wilton, D.C. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic 12 90.00 90.00 120.00 74.790 74.790 88.891 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 Ca 2 40.078 CALCIUM 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 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 C4 H9 N O3 119.119 y THREONINE 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 Biochemistry BICHAW 0033 0006-2960 41 15468 15476 10.1021/bi020485z 12501175 The crystal structure of the H48Q active site mutant of human group IIA secreted phospholipase A2 at 1.5 A resolution provides an insight into the catalytic mechanism 2002 10.2210/pdb1n29/pdb pdb_00001n29 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 100 1 IMAGE PLATE 2000-03-21 MARRESEARCH SINGLE WAVELENGTH M x-ray 1 1.5418 1.0 1.5418 ROTATING ANODE ENRAF-NONIUS 13901.986 Phospholipase A2, membrane associated 3.1.1.4 N1A 1 man polymer 40.078 CALCIUM ION 2 syn non-polymer 18.015 water 25 nat water Phosphatidylcholine 2-acylhydrolase, Group IIA phospholipase A2, GIIC sPLA2, Non-pancreatic secretory phospholipase A2, NPS-PLA2 no no ALVNFHRMIKLTTGKEAALSYGFYGCHCGVGGRGSPKDATDRCCVTHDCCYKRLEKRGCGTKFLSYKFSNSGSRITCAKQ DSCRSQLCECDKAAATCFARNKTTYNKKYQYYSNKHCRGSTPRC ALVNFHRMIKLTTGKEAALSYGFYGCHCGVGGRGSPKDATDRCCVTHDCCYKRLEKRGCGTKFLSYKFSNSGSRITCAKQ DSCRSQLCECDKAAATCFARNKTTYNKKYQYYSNKHCRGSTPRC 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 n n n n n n n n n n n n n n n n n n n n n 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) BL21 DE3 Plasmid pET11a 1 2.58 52.34 VAPOR DIFFUSION, HANGING DROP 7.5 NaCl, CaCl2, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K 277 database_2 pdbx_struct_conn_angle struct_conn struct_ref_seq_dif struct_site repository Initial release Version format compliance Version format compliance Database references Derived calculations 1 0 2003-10-28 1 1 2008-04-28 1 2 2011-07-13 1 3 2021-10-27 _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.ptnr2_auth_seq_id _pdbx_struct_conn_angle.ptnr2_label_asym_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_ref_seq_dif.details _struct_site.pdbx_auth_asym_id _struct_site.pdbx_auth_comp_id _struct_site.pdbx_auth_seq_id Crystal structure of the H48Q mutant of human group IIA phospholipase A2 RCSB Y RCSB 2002-10-22 REL CA CALCIUM ION HOH water CA2 1 2 CA CA 125 A CA2 2 2 CA CA 126 A HOH 2 3 HOH HOH 127 A HOH 7 3 HOH HOH 128 A HOH 11 3 HOH HOH 129 A HOH 27 3 HOH HOH 130 A HOH 90 3 HOH HOH 131 A HOH 152 3 HOH HOH 132 A HOH 178 3 HOH HOH 133 A HOH 215 3 HOH HOH 134 A HOH 227 3 HOH HOH 135 A HOH 292 3 HOH HOH 136 A HOH 294 3 HOH HOH 137 A HOH 305 3 HOH HOH 138 A HOH 334 3 HOH HOH 139 A HOH 340 3 HOH HOH 140 A HOH 368 3 HOH HOH 141 A HOH 369 3 HOH HOH 142 A HOH 373 3 HOH HOH 143 A HOH 374 3 HOH HOH 144 A HOH 375 3 HOH HOH 145 A HOH 377 3 HOH HOH 146 A HOH 380 3 HOH HOH 147 A HOH 384 3 HOH HOH 148 A HOH 386 3 HOH HOH 149 A HOH 390 3 HOH HOH 150 A HOH 392 3 HOH HOH 151 A ALA 1 n 1 ALA 1 A LEU 2 n 2 LEU 2 A VAL 3 n 3 VAL 3 A ASN 4 n 4 ASN 4 A PHE 5 n 5 PHE 5 A HIS 6 n 6 HIS 6 A ARG 7 n 7 ARG 7 A MET 8 n 8 MET 8 A ILE 9 n 9 ILE 9 A LYS 10 n 10 LYS 10 A LEU 11 n 11 LEU 11 A THR 12 n 12 THR 12 A THR 13 n 13 THR 13 A GLY 14 n 14 GLY 14 A LYS 15 n 15 LYS 15 A GLU 16 n 16 GLU 16 A ALA 17 n 17 ALA 17 A ALA 18 n 18 ALA 18 A LEU 19 n 19 LEU 19 A SER 20 n 20 SER 20 A TYR 21 n 21 TYR 21 A GLY 22 n 22 GLY 22 A PHE 23 n 23 PHE 23 A TYR 24 n 24 TYR 24 A GLY 25 n 25 GLY 25 A CYS 26 n 26 CYS 26 A HIS 27 n 27 HIS 27 A CYS 28 n 28 CYS 28 A GLY 29 n 29 GLY 29 A VAL 30 n 30 VAL 30 A GLY 31 n 31 GLY 31 A GLY 32 n 32 GLY 32 A ARG 33 n 33 ARG 33 A GLY 34 n 34 GLY 34 A SER 35 n 35 SER 35 A PRO 36 n 36 PRO 36 A LYS 37 n 37 LYS 37 A ASP 38 n 38 ASP 38 A ALA 39 n 39 ALA 39 A THR 40 n 40 THR 40 A ASP 41 n 41 ASP 41 A ARG 42 n 42 ARG 42 A CYS 43 n 43 CYS 43 A CYS 44 n 44 CYS 44 A VAL 45 n 45 VAL 45 A THR 46 n 46 THR 46 A HIS 47 n 47 HIS 47 A ASP 48 n 48 ASP 48 A CYS 49 n 49 CYS 49 A CYS 50 n 50 CYS 50 A TYR 51 n 51 TYR 51 A LYS 52 n 52 LYS 52 A ARG 53 n 53 ARG 53 A LEU 54 n 54 LEU 54 A GLU 55 n 55 GLU 55 A LYS 56 n 56 LYS 56 A ARG 57 n 57 ARG 57 A GLY 58 n 58 GLY 58 A CYS 59 n 59 CYS 59 A GLY 60 n 60 GLY 60 A THR 61 n 61 THR 61 A LYS 62 n 62 LYS 62 A PHE 63 n 63 PHE 63 A LEU 64 n 64 LEU 64 A SER 65 n 65 SER 65 A TYR 66 n 66 TYR 66 A LYS 67 n 67 LYS 67 A PHE 68 n 68 PHE 68 A SER 69 n 69 SER 69 A ASN 70 n 70 ASN 70 A SER 71 n 71 SER 71 A GLY 72 n 72 GLY 72 A SER 73 n 73 SER 73 A ARG 74 n 74 ARG 74 A ILE 75 n 75 ILE 75 A THR 76 n 76 THR 76 A CYS 77 n 77 CYS 77 A ALA 78 n 78 ALA 78 A LYS 79 n 79 LYS 79 A GLN 80 n 80 GLN 80 A ASP 81 n 81 ASP 81 A SER 82 n 82 SER 82 A CYS 83 n 83 CYS 83 A ARG 84 n 84 ARG 84 A SER 85 n 85 SER 85 A GLN 86 n 86 GLN 86 A LEU 87 n 87 LEU 87 A CYS 88 n 88 CYS 88 A GLU 89 n 89 GLU 89 A CYS 90 n 90 CYS 90 A ASP 91 n 91 ASP 91 A LYS 92 n 92 LYS 92 A ALA 93 n 93 ALA 93 A ALA 94 n 94 ALA 94 A ALA 95 n 95 ALA 95 A THR 96 n 96 THR 96 A CYS 97 n 97 CYS 97 A PHE 98 n 98 PHE 98 A ALA 99 n 99 ALA 99 A ARG 100 n 100 ARG 100 A ASN 101 n 101 ASN 101 A LYS 102 n 102 LYS 102 A THR 103 n 103 THR 103 A THR 104 n 104 THR 104 A TYR 105 n 105 TYR 105 A ASN 106 n 106 ASN 106 A LYS 107 n 107 LYS 107 A LYS 108 n 108 LYS 108 A TYR 109 n 109 TYR 109 A GLN 110 n 110 GLN 110 A TYR 111 n 111 TYR 111 A TYR 112 n 112 TYR 112 A SER 113 n 113 SER 113 A ASN 114 n 114 ASN 114 A LYS 115 n 115 LYS 115 A HIS 116 n 116 HIS 116 A CYS 117 n 117 CYS 117 A ARG 118 n 118 ARG 118 A GLY 119 n 119 GLY 119 A SER 120 n 120 SER 120 A THR 121 n 121 THR 121 A PRO 122 n 122 PRO 122 A ARG 123 n 123 ARG 123 A CYS 124 n 124 CYS 124 A author_defined_assembly 1 monomeric A PHE 23 A O PHE 23 1_555 A CA 126 C CA CA 1_555 A GLY 25 A O GLY 25 1_555 90.6 A PHE 23 A O PHE 23 1_555 A CA 126 C CA CA 1_555 A TYR 112 A O TYR 112 1_555 93.0 A GLY 25 A O GLY 25 1_555 A CA 126 C CA CA 1_555 A TYR 112 A O TYR 112 1_555 90.2 A PHE 23 A O PHE 23 1_555 A CA 126 C CA CA 1_555 A ASN 114 A ND2 ASN 114 1_555 169.5 A GLY 25 A O GLY 25 1_555 A CA 126 C CA CA 1_555 A ASN 114 A ND2 ASN 114 1_555 84.4 A TYR 112 A O TYR 112 1_555 A CA 126 C CA CA 1_555 A ASN 114 A ND2 ASN 114 1_555 96.3 A HIS 27 A O HIS 27 1_555 A CA 125 B CA CA 1_555 A GLY 29 A O GLY 29 1_555 90.3 A HIS 27 A O HIS 27 1_555 A CA 125 B CA CA 1_555 A GLY 31 A O GLY 31 1_555 85.8 A GLY 29 A O GLY 29 1_555 A CA 125 B CA CA 1_555 A GLY 31 A O GLY 31 1_555 86.1 A HIS 27 A O HIS 27 1_555 A CA 125 B CA CA 1_555 A ASP 48 A OD1 ASP 48 1_555 100.7 A GLY 29 A O GLY 29 1_555 A CA 125 B CA CA 1_555 A ASP 48 A OD1 ASP 48 1_555 120.0 A GLY 31 A O GLY 31 1_555 A CA 125 B CA CA 1_555 A ASP 48 A OD1 ASP 48 1_555 152.7 A HIS 27 A O HIS 27 1_555 A CA 125 B CA CA 1_555 A ASP 48 A OD2 ASP 48 1_555 94.5 A GLY 29 A O GLY 29 1_555 A CA 125 B CA CA 1_555 A ASP 48 A OD2 ASP 48 1_555 170.3 A GLY 31 A O GLY 31 1_555 A CA 125 B CA CA 1_555 A ASP 48 A OD2 ASP 48 1_555 102.6 A ASP 48 A OD1 ASP 48 1_555 A CA 125 B CA CA 1_555 A ASP 48 A OD2 ASP 48 1_555 50.8 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 SER 69 A N SER 69 A O THR 76 A O THR 76 1 A ARG 100 A ARG 100 1 A LYS 10 A LYS 10 0 Y 1 A ARG 33 A ARG 33 0 Y 1 A LYS 52 A LYS 52 0 Y 1 A ARG 57 A ARG 57 0 Y 1 A ARG 74 A ARG 74 0 Y 1 A LYS 79 A LYS 79 0 Y 1 A ARG 100 A ARG 100 0 Y 1 A A O NH2 SER ARG 71 74 1.03 1 A A NH1 NE2 ARG GLN 57 86 1.32 1 A A CZ NE2 ARG GLN 57 86 2.03 1 A A NH1 CD ARG GLN 57 86 2.16 1 A A C NH2 SER ARG 71 74 2.16 1 A GLU 55 -14.38 1 A SER 82 -11.85 1 A TYR 105 -10.87 1 A ARG 33 0.231 SIDE CHAIN 1 A ARG 74 0.314 SIDE CHAIN 1 A ARG 100 0.175 SIDE CHAIN 1 A A C N GLU ALA 16 17 1.70 1 A A C N CYS CYS 43 44 1.60 1 -20.12 2.00 110.40 90.28 A A A CB CA C LYS LYS LYS 10 10 10 N 1 24.59 1.80 110.60 135.19 A A A N CA CB LYS LYS LYS 10 10 10 N 1 40.36 2.20 113.40 153.76 A A A CA CB CG LYS LYS LYS 10 10 10 N 1 30.66 2.60 111.60 142.26 A A A CB CG CD LYS LYS LYS 10 10 10 N 1 -16.11 2.30 111.70 95.59 A A A CD CE NZ LYS LYS LYS 10 10 10 N 1 -9.91 1.60 122.70 112.79 A A A O C N GLY GLY LYS 14 14 15 Y 1 15.44 2.20 117.20 132.64 A A A CA C N ALA ALA ALA 17 17 18 Y 1 -17.81 1.60 122.70 104.89 A A A O C N ALA ALA ALA 17 17 18 Y 1 16.23 1.60 122.70 138.93 A A A O C N PHE PHE TYR 23 23 24 Y 1 -28.17 2.00 110.40 82.23 A A A CB CA C ARG ARG ARG 33 33 33 N 1 19.10 1.80 110.60 129.70 A A A N CA CB ARG ARG ARG 33 33 33 N 1 39.38 2.20 113.40 152.78 A A A CA CB CG ARG ARG ARG 33 33 33 N 1 31.55 2.60 111.60 143.15 A A A CB CG CD ARG ARG ARG 33 33 33 N 1 -12.23 1.40 123.60 111.37 A A A CD NE CZ ARG ARG ARG 33 33 33 N 1 15.69 0.50 120.30 135.99 A A A NE CZ NH1 ARG ARG ARG 33 33 33 N 1 -16.70 0.50 120.30 103.60 A A A NE CZ NH2 ARG ARG ARG 33 33 33 N 1 -16.93 2.60 111.60 94.67 A A A CB CG CD LYS LYS LYS 52 52 52 N 1 14.16 2.30 111.70 125.86 A A A CD CE NZ LYS LYS LYS 52 52 52 N 1 21.79 2.20 117.20 138.99 A A A CA C N GLU GLU LYS 55 55 56 Y 1 -23.21 1.60 122.70 99.49 A A A O C N GLU GLU LYS 55 55 56 Y 1 19.47 2.50 121.70 141.17 A A A C N CA GLU LYS LYS 55 56 56 Y 1 15.28 1.80 110.60 125.88 A A A N CA CB LYS LYS LYS 56 56 56 N 1 -18.23 2.30 111.70 93.47 A A A CD CE NZ LYS LYS LYS 56 56 56 N 1 -9.01 1.40 123.60 114.59 A A A CD NE CZ ARG ARG ARG 57 57 57 N 1 18.56 2.70 111.00 129.56 A A A N CA C CYS CYS CYS 59 59 59 N 1 13.86 2.00 116.20 130.06 A A A CA C N CYS CYS GLY 59 59 60 Y 1 -15.88 1.70 123.20 107.32 A A A O C N CYS CYS GLY 59 59 60 Y 1 16.92 2.10 122.30 139.22 A A A C N CA CYS GLY GLY 59 60 60 Y 1 13.84 2.20 113.40 127.24 A A A CA CB CG ARG ARG ARG 74 74 74 N 1 -18.94 2.10 111.80 92.86 A A A CG CD NE ARG ARG ARG 74 74 74 N 1 14.26 0.50 120.30 134.56 A A A NE CZ NH1 ARG ARG ARG 74 74 74 N 1 -17.14 0.50 120.30 103.16 A A A NE CZ NH2 ARG ARG ARG 74 74 74 N 1 -27.69 1.80 110.60 82.91 A A A N CA CB LYS LYS LYS 79 79 79 N 1 -23.02 2.20 113.40 90.38 A A A CA CB CG LYS LYS LYS 79 79 79 N 1 -18.07 2.30 111.70 93.63 A A A CD CE NZ LYS LYS LYS 79 79 79 N 1 21.84 2.20 117.20 139.04 A A A CA C N SER SER CYS 82 82 83 Y 1 -25.41 1.60 122.70 97.29 A A A O C N SER SER CYS 82 82 83 Y 1 19.43 2.50 121.70 141.13 A A A C N CA SER CYS CYS 82 83 83 Y 1 14.55 2.20 113.40 127.95 A A A CA CB CG ARG ARG ARG 100 100 100 N 1 15.92 2.10 111.80 127.72 A A A CG CD NE ARG ARG ARG 100 100 100 N 1 -13.77 1.40 123.60 109.83 A A A CD NE CZ ARG ARG ARG 100 100 100 N 1 -4.49 0.50 120.30 115.81 A A A NE CZ NH1 ARG ARG ARG 100 100 100 N 1 -17.72 2.30 111.70 93.98 A A A CD CE NZ LYS LYS LYS 102 102 102 N 1 -14.28 2.20 117.20 102.92 A A A CA C N ASN ASN LYS 106 106 107 Y 1 9.95 1.60 122.70 132.65 A A A O C N ASN ASN LYS 106 106 107 Y 1 -18.02 2.00 110.40 92.38 A A A CB CA C LYS LYS LYS 107 107 107 N 1 15.57 1.80 110.60 126.17 A A A N CA CB LYS LYS LYS 107 107 107 N 1 38.08 2.20 113.40 151.48 A A A CA CB CG LYS LYS LYS 107 107 107 N 1 26.56 2.60 111.60 138.16 A A A CB CG CD LYS LYS LYS 107 107 107 N 1 14.95 2.20 113.40 128.35 A A A CA CB CG GLN GLN GLN 110 110 110 N 1 -21.09 2.00 121.60 100.51 A A A CG CD OE1 GLN GLN GLN 110 110 110 N 1 19.50 2.40 116.70 136.20 A A A CG CD NE2 GLN GLN GLN 110 110 110 N 1 14.15 2.20 113.40 127.55 A A A CA CB CG LYS LYS LYS 115 115 115 N 1 -17.84 2.30 111.70 93.86 A A A CD CE NZ LYS LYS LYS 115 115 115 N 1 -11.00 1.60 122.70 111.70 A A A O C N HIS HIS CYS 116 116 117 Y 1 11.14 1.50 119.30 130.44 A A A C N CA THR PRO PRO 121 122 122 Y 1 A A C O LEU LEU 2 2 -0.159 0.019 1.229 1.070 N 1 A A CA CB ILE ILE 9 9 -0.146 0.023 1.544 1.398 N 1 A A CB CG LYS LYS 10 10 -0.466 0.027 1.521 1.055 N 1 A A N CA GLU GLU 16 16 -0.138 0.020 1.459 1.321 N 1 A A CA C ALA ALA 17 17 -0.225 0.026 1.525 1.300 N 1 A A C N ALA ALA 17 18 0.216 0.023 1.336 1.552 Y 1 A A CB CG ARG ARG 33 33 -0.313 0.027 1.521 1.208 N 1 A A C N CYS CYS 43 44 0.265 0.023 1.336 1.601 Y 1 A A CA CB CYS CYS 44 44 -0.086 0.013 1.526 1.440 N 1 A A CG CD2 HIS HIS 47 47 0.060 0.009 1.354 1.414 N 1 A A N CA GLU GLU 55 55 -0.170 0.020 1.459 1.289 N 1 A A CB CG LYS LYS 56 56 -0.292 0.027 1.521 1.229 N 1 A A NE CZ ARG ARG 57 57 -0.086 0.013 1.326 1.240 N 1 A A N CA CYS CYS 59 59 0.145 0.020 1.459 1.604 N 1 A A CA C CYS CYS 59 59 -0.392 0.026 1.525 1.133 N 1 A A N CA GLY GLY 60 60 -0.101 0.015 1.456 1.355 N 1 A A CA CB CYS CYS 77 77 -0.078 0.013 1.526 1.448 N 1 A A CB SG CYS CYS 77 77 -0.108 0.016 1.812 1.704 N 1 A A CB CG LYS LYS 79 79 0.687 0.027 1.521 2.208 N 1 A A CB CG LYS LYS 107 107 -0.345 0.027 1.521 1.176 N 1 A PHE 5 -33.67 -70.02 1 A ALA 18 65.41 -71.57 1 A ASP 38 -172.45 -167.64 1 A THR 61 -139.78 -97.03 1 A GLN 80 -163.33 -163.55 1 A TYR 111 -114.16 57.25 1 A PRO 122 -29.25 -42.75 1 A ARG 123 66.47 108.31 0.3197 0.2423 2.6 15 248 4851 4635 Random 1 THROUGHOUT 2 MOLECULAR REPLACEMENT Engh & Huber 2.6 15 25 990 2 0 963 2.6 15 1N29 4851 4635 2 2 1 90.4 2.6 2.8 99.8 data reduction MOSFLM data scaling SCALA refinement CNS data scaling CCP4 (SCALA) phasing CNS Crystal structure of the N1A mutant of human group IIA phospholipase A2 1 N N 2 N N 2 N N 3 N N A ALA 1 A ALA 1 HELX_P A GLY 14 A GLY 14 1 1 14 A ASP 38 A ASP 38 HELX_P A ARG 57 A ARG 57 1 2 20 A ASP 81 A ASP 81 HELX_P A ASN 101 A ASN 101 1 3 21 A LYS 102 A LYS 102 HELX_P A TYR 105 A TYR 105 5 4 4 A SER 113 A SER 113 HELX_P A CYS 117 A CYS 117 5 5 5 disulf 2.048 A CYS 26 A SG CYS 26 1_555 A CYS 117 A SG CYS 117 1_555 disulf 2.197 A CYS 28 A SG CYS 28 1_555 A CYS 44 A SG CYS 44 1_555 disulf 2.023 A CYS 43 A SG CYS 43 1_555 A CYS 97 A SG CYS 97 1_555 disulf 2.025 A CYS 49 A SG CYS 49 1_555 A CYS 124 A SG CYS 124 1_555 disulf 1.910 A CYS 50 A SG CYS 50 1_555 A CYS 90 A SG CYS 90 1_555 disulf 1.876 A CYS 59 A SG CYS 59 1_555 A CYS 83 A SG CYS 83 1_555 disulf 1.943 A CYS 77 A SG CYS 77 1_555 A CYS 88 A SG CYS 88 1_555 metalc 2.445 A PHE 23 A O PHE 23 1_555 A CA 126 C CA CA 1_555 metalc 2.778 A GLY 25 A O GLY 25 1_555 A CA 126 C CA CA 1_555 metalc 2.239 A HIS 27 A O HIS 27 1_555 A CA 125 B CA CA 1_555 metalc 2.237 A GLY 29 A O GLY 29 1_555 A CA 125 B CA CA 1_555 metalc 2.280 A GLY 31 A O GLY 31 1_555 A CA 125 B CA CA 1_555 metalc 2.806 A ASP 48 A OD1 ASP 48 1_555 A CA 125 B CA CA 1_555 metalc 2.120 A ASP 48 A OD2 ASP 48 1_555 A CA 125 B CA CA 1_555 metalc 2.266 A TYR 112 A O TYR 112 1_555 A CA 126 C CA CA 1_555 metalc 2.298 A ASN 114 A ND2 ASN 114 1_555 A CA 126 C CA CA 1_555 HYDROLASE hydrolase PA2GA_HUMAN UNP 1 21 P14555 NLVNFHRMIKLTTGKEAALSYGFYGCHCGVGGRGSPKDATDRCCVTHDCCYKRLEKRGCGTKFLSYKFSNSGSRITCAKQ DSCRSQLCECDKAAATCFARNKTTYNKKYQYYSNKHCRGSTPRC 21 144 1N29 1 124 P14555 A 1 1 124 1 ASN engineered mutation ALA 1 1N29 A P14555 UNP 21 1 2 anti-parallel A PHE 68 A PHE 68 A SER 71 A SER 71 A ARG 74 A ARG 74 A CYS 77 A CYS 77 BINDING SITE FOR RESIDUE CA A 125 A CA 125 Software 4 BINDING SITE FOR RESIDUE CA A 126 A CA 126 Software 4 A HIS 27 A HIS 27 4 1_555 A GLY 29 A GLY 29 4 1_555 A GLY 31 A GLY 31 4 1_555 A ASP 48 A ASP 48 4 1_555 A PHE 23 A PHE 23 4 1_555 A GLY 25 A GLY 25 4 1_555 A TYR 112 A TYR 112 4 1_555 A ASN 114 A ASN 114 4 1_555 178 P 61 2 2