0.028193 0.000000 0.000000 0.000000 0.014376 0.000000 0.000000 0.000000 0.021758 0.00000 0.00000 0.00000 Chandra, N. Acharya, K.R. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic 4 90.00 90.00 90.00 35.470 69.560 45.960 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 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 Biochemistry BICHAW 0033 0006-2960 37 4767 4772 10.1021/bi973000t 9537992 Structural evidence for the presence of a secondary calcium binding site in human alpha-lactalbumin. 1998 UK Structure STRUE6 2005 0969-2126 4 691 Crystal Structures of Guinea-Pig, Goat and Bovine Alpha-Lactalbumin Highlight the Enhanced Conformational Flexibility of Regions that are Significant for its Action in Lactose Synthase 1996 US J.Biol.Chem. JBCHA3 0071 0021-9258 269 5106 Study by Mutagenesis of the Roles of Two Aromatic Clusters of Alpha-Lactalbumin in Aspects of its Action in the Lactose Synthase System 1994 US J.Biol.Chem. JBCHA3 0071 0021-9258 268 19292 Alpha-Lactalbumin Possesses a Distinct Zinc Binding Site 1993 UK J.Mol.Biol. JMOBAK 0070 0022-2836 221 571 Crystal Structure of Human Alpha-Lactalbumin at 1.7 A Resolution 1991 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 293 1 COLLIMATOR AREA DETECTOR 1992-01 SIEMENS GRAPHITE(002) M x-ray 1 1.5418 1.0 1.5418 ROTATING ANODE SIEMENS 14093.128 ALPHA-LACTALBUMIN 2.4.1.22 CALCIUM-BINDING REGION 1 nat polymer 40.078 CALCIUM ION 2 syn non-polymer 18.015 water 106 nat water ALPHA-LA no no KQFTKCELSQLLKDIDGYGGIALPELICTMFHTSGYDTQAIVENNESTEYGLFQISNKLWCKSSQVPQSRNICDISCDKF LDDDITDDIMCAKKILDIKGIDYWLAHKALCTEKLEQWLCEKL KQFTKCELSQLLKDIDGYGGIALPELICTMFHTSGYDTQAIVENNESTEYGLFQISNKLWCKSSQVPQSRNICDISCDKF LDDDITDDIMCAKKILDIKGIDYWLAHKALCTEKLEQWLCEKL 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 human Homo sample TRANS-GOLGI APPARATUS OF THE MAMMARY GLAND 9606 Homo sapiens MILK 1 1.99 38 7.5 pH 7.5 repository Initial release Version format compliance Version format compliance 1 0 1999-04-27 1 1 2008-03-24 1 2 2011-07-13 Y 1998-02-05 REL CA CALCIUM ION HOH water CA 124 2 CA CA 124 A CA 125 2 CA CA 125 A HOH 130 3 HOH HOH 130 A HOH 131 3 HOH HOH 131 A HOH 132 3 HOH HOH 132 A HOH 133 3 HOH HOH 133 A HOH 134 3 HOH HOH 134 A HOH 135 3 HOH HOH 135 A HOH 136 3 HOH HOH 136 A HOH 137 3 HOH HOH 137 A HOH 138 3 HOH HOH 138 A HOH 139 3 HOH HOH 139 A HOH 140 3 HOH HOH 140 A HOH 141 3 HOH HOH 141 A HOH 142 3 HOH HOH 142 A HOH 143 3 HOH HOH 143 A HOH 144 3 HOH HOH 144 A HOH 145 3 HOH HOH 145 A HOH 146 3 HOH HOH 146 A HOH 147 3 HOH HOH 147 A HOH 148 3 HOH HOH 148 A HOH 149 3 HOH HOH 149 A HOH 150 3 HOH HOH 150 A HOH 151 3 HOH HOH 151 A HOH 152 3 HOH HOH 152 A HOH 153 3 HOH HOH 153 A HOH 154 3 HOH HOH 154 A HOH 155 3 HOH HOH 155 A HOH 156 3 HOH HOH 156 A HOH 157 3 HOH HOH 157 A HOH 158 3 HOH HOH 158 A HOH 159 3 HOH HOH 159 A HOH 160 3 HOH HOH 160 A HOH 161 3 HOH HOH 161 A HOH 162 3 HOH HOH 162 A HOH 163 3 HOH HOH 163 A HOH 164 3 HOH HOH 164 A HOH 165 3 HOH HOH 165 A HOH 166 3 HOH HOH 166 A HOH 167 3 HOH HOH 167 A HOH 168 3 HOH HOH 168 A HOH 169 3 HOH HOH 169 A HOH 170 3 HOH HOH 170 A HOH 171 3 HOH HOH 171 A HOH 172 3 HOH HOH 172 A HOH 173 3 HOH HOH 173 A HOH 174 3 HOH HOH 174 A HOH 175 3 HOH HOH 175 A HOH 176 3 HOH HOH 176 A HOH 177 3 HOH HOH 177 A HOH 178 3 HOH HOH 178 A HOH 179 3 HOH HOH 179 A HOH 180 3 HOH HOH 180 A HOH 181 3 HOH HOH 181 A HOH 182 3 HOH HOH 182 A HOH 183 3 HOH HOH 183 A HOH 184 3 HOH HOH 184 A HOH 185 3 HOH HOH 185 A HOH 186 3 HOH HOH 186 A HOH 187 3 HOH HOH 187 A HOH 188 3 HOH HOH 188 A HOH 189 3 HOH HOH 189 A HOH 190 3 HOH HOH 190 A HOH 191 3 HOH HOH 191 A HOH 192 3 HOH HOH 192 A HOH 193 3 HOH HOH 193 A HOH 194 3 HOH HOH 194 A HOH 195 3 HOH HOH 195 A HOH 196 3 HOH HOH 196 A HOH 197 3 HOH HOH 197 A HOH 198 3 HOH HOH 198 A HOH 199 3 HOH HOH 199 A HOH 200 3 HOH HOH 200 A HOH 201 3 HOH HOH 201 A HOH 202 3 HOH HOH 202 A HOH 203 3 HOH HOH 203 A HOH 204 3 HOH HOH 204 A HOH 205 3 HOH HOH 205 A HOH 206 3 HOH HOH 206 A HOH 207 3 HOH HOH 207 A HOH 208 3 HOH HOH 208 A HOH 209 3 HOH HOH 209 A HOH 210 3 HOH HOH 210 A HOH 211 3 HOH HOH 211 A HOH 212 3 HOH HOH 212 A HOH 213 3 HOH HOH 213 A HOH 214 3 HOH HOH 214 A HOH 215 3 HOH HOH 215 A HOH 216 3 HOH HOH 216 A HOH 217 3 HOH HOH 217 A HOH 218 3 HOH HOH 218 A HOH 219 3 HOH HOH 219 A HOH 220 3 HOH HOH 220 A HOH 221 3 HOH HOH 221 A HOH 222 3 HOH HOH 222 A HOH 223 3 HOH HOH 223 A HOH 224 3 HOH HOH 224 A HOH 225 3 HOH HOH 225 A HOH 226 3 HOH HOH 226 A HOH 227 3 HOH HOH 227 A HOH 228 3 HOH HOH 228 A HOH 229 3 HOH HOH 229 A HOH 230 3 HOH HOH 230 A HOH 231 3 HOH HOH 231 A HOH 232 3 HOH HOH 232 A HOH 233 3 HOH HOH 233 A HOH 234 3 HOH HOH 234 A HOH 235 3 HOH HOH 235 A LYS 1 n 1 LYS 1 A GLN 2 n 2 GLN 2 A PHE 3 n 3 PHE 3 A THR 4 n 4 THR 4 A LYS 5 n 5 LYS 5 A CYS 6 n 6 CYS 6 A GLU 7 n 7 GLU 7 A LEU 8 n 8 LEU 8 A SER 9 n 9 SER 9 A GLN 10 n 10 GLN 10 A LEU 11 n 11 LEU 11 A LEU 12 n 12 LEU 12 A LYS 13 n 13 LYS 13 A ASP 14 n 14 ASP 14 A ILE 15 n 15 ILE 15 A ASP 16 n 16 ASP 16 A GLY 17 n 17 GLY 17 A TYR 18 n 18 TYR 18 A GLY 19 n 19 GLY 19 A GLY 20 n 20 GLY 20 A ILE 21 n 21 ILE 21 A ALA 22 n 22 ALA 22 A LEU 23 n 23 LEU 23 A PRO 24 n 24 PRO 24 A GLU 25 n 25 GLU 25 A LEU 26 n 26 LEU 26 A ILE 27 n 27 ILE 27 A CYS 28 n 28 CYS 28 A THR 29 n 29 THR 29 A MET 30 n 30 MET 30 A PHE 31 n 31 PHE 31 A HIS 32 n 32 HIS 32 A THR 33 n 33 THR 33 A SER 34 n 34 SER 34 A GLY 35 n 35 GLY 35 A TYR 36 n 36 TYR 36 A ASP 37 n 37 ASP 37 A THR 38 n 38 THR 38 A GLN 39 n 39 GLN 39 A ALA 40 n 40 ALA 40 A ILE 41 n 41 ILE 41 A VAL 42 n 42 VAL 42 A GLU 43 n 43 GLU 43 A ASN 44 n 44 ASN 44 A ASN 45 n 45 ASN 45 A GLU 46 n 46 GLU 46 A SER 47 n 47 SER 47 A THR 48 n 48 THR 48 A GLU 49 n 49 GLU 49 A TYR 50 n 50 TYR 50 A GLY 51 n 51 GLY 51 A LEU 52 n 52 LEU 52 A PHE 53 n 53 PHE 53 A GLN 54 n 54 GLN 54 A ILE 55 n 55 ILE 55 A SER 56 n 56 SER 56 A ASN 57 n 57 ASN 57 A LYS 58 n 58 LYS 58 A LEU 59 n 59 LEU 59 A TRP 60 n 60 TRP 60 A CYS 61 n 61 CYS 61 A LYS 62 n 62 LYS 62 A SER 63 n 63 SER 63 A SER 64 n 64 SER 64 A GLN 65 n 65 GLN 65 A VAL 66 n 66 VAL 66 A PRO 67 n 67 PRO 67 A GLN 68 n 68 GLN 68 A SER 69 n 69 SER 69 A ARG 70 n 70 ARG 70 A ASN 71 n 71 ASN 71 A ILE 72 n 72 ILE 72 A CYS 73 n 73 CYS 73 A ASP 74 n 74 ASP 74 A ILE 75 n 75 ILE 75 A SER 76 n 76 SER 76 A CYS 77 n 77 CYS 77 A ASP 78 n 78 ASP 78 A LYS 79 n 79 LYS 79 A PHE 80 n 80 PHE 80 A LEU 81 n 81 LEU 81 A ASP 82 n 82 ASP 82 A ASP 83 n 83 ASP 83 A ASP 84 n 84 ASP 84 A ILE 85 n 85 ILE 85 A THR 86 n 86 THR 86 A ASP 87 n 87 ASP 87 A ASP 88 n 88 ASP 88 A ILE 89 n 89 ILE 89 A MET 90 n 90 MET 90 A CYS 91 n 91 CYS 91 A ALA 92 n 92 ALA 92 A LYS 93 n 93 LYS 93 A LYS 94 n 94 LYS 94 A ILE 95 n 95 ILE 95 A LEU 96 n 96 LEU 96 A ASP 97 n 97 ASP 97 A ILE 98 n 98 ILE 98 A LYS 99 n 99 LYS 99 A GLY 100 n 100 GLY 100 A ILE 101 n 101 ILE 101 A ASP 102 n 102 ASP 102 A TYR 103 n 103 TYR 103 A TRP 104 n 104 TRP 104 A LEU 105 n 105 LEU 105 A ALA 106 n 106 ALA 106 A HIS 107 n 107 HIS 107 A LYS 108 n 108 LYS 108 A ALA 109 n 109 ALA 109 A LEU 110 n 110 LEU 110 A CYS 111 n 111 CYS 111 A THR 112 n 112 THR 112 A GLU 113 n 113 GLU 113 A LYS 114 n 114 LYS 114 A LEU 115 n 115 LEU 115 A GLU 116 n 116 GLU 116 A GLN 117 n 117 GLN 117 A TRP 118 n 118 TRP 118 A LEU 119 n 119 LEU 119 A CYS 120 n 120 CYS 120 A GLU 121 n 121 GLU 121 A LYS 122 n 122 LYS 122 A LEU 123 n 123 LEU 123 A author_defined_assembly 1 monomeric A LYS 79 A O LYS 79 1_555 A CA 124 B CA CA 1_555 A ASP 84 A O ASP 84 1_555 173.0 A LYS 79 A O LYS 79 1_555 A CA 124 B CA CA 1_555 A ASP 87 A OD1 ASP 87 1_555 87.2 A ASP 84 A O ASP 84 1_555 A CA 124 B CA CA 1_555 A ASP 87 A OD1 ASP 87 1_555 97.0 A LYS 79 A O LYS 79 1_555 A CA 124 B CA CA 1_555 A ASP 88 A OD1 ASP 88 1_555 98.0 A ASP 84 A O ASP 84 1_555 A CA 124 B CA CA 1_555 A ASP 88 A OD1 ASP 88 1_555 88.8 A ASP 87 A OD1 ASP 87 1_555 A CA 124 B CA CA 1_555 A ASP 88 A OD1 ASP 88 1_555 67.8 A LYS 79 A O LYS 79 1_555 A CA 124 B CA CA 1_555 A HOH 150 D O HOH 1_555 88.9 A ASP 84 A O ASP 84 1_555 A CA 124 B CA CA 1_555 A HOH 150 D O HOH 1_555 86.8 A ASP 87 A OD1 ASP 87 1_555 A CA 124 B CA CA 1_555 A HOH 150 D O HOH 1_555 74.4 A ASP 88 A OD1 ASP 88 1_555 A CA 124 B CA CA 1_555 A HOH 150 D O HOH 1_555 141.1 A LYS 79 A O LYS 79 1_555 A CA 124 B CA CA 1_555 A HOH 134 D O HOH 1_555 91.9 A ASP 84 A O ASP 84 1_555 A CA 124 B CA CA 1_555 A HOH 134 D O HOH 1_555 88.8 A ASP 87 A OD1 ASP 87 1_555 A CA 124 B CA CA 1_555 A HOH 134 D O HOH 1_555 137.9 A ASP 88 A OD1 ASP 88 1_555 A CA 124 B CA CA 1_555 A HOH 134 D O HOH 1_555 70.7 A HOH 150 D O HOH 1_555 A CA 124 B CA CA 1_555 A HOH 134 D O HOH 1_555 147.7 A LYS 79 A O LYS 79 1_555 A CA 124 B CA CA 1_555 A ASP 82 A OD1 ASP 82 1_555 89.5 A ASP 84 A O ASP 84 1_555 A CA 124 B CA CA 1_555 A ASP 82 A OD1 ASP 82 1_555 84.0 A ASP 87 A OD1 ASP 87 1_555 A CA 124 B CA CA 1_555 A ASP 82 A OD1 ASP 82 1_555 147.7 A ASP 88 A OD1 ASP 88 1_555 A CA 124 B CA CA 1_555 A ASP 82 A OD1 ASP 82 1_555 144.4 A HOH 150 D O HOH 1_555 A CA 124 B CA CA 1_555 A ASP 82 A OD1 ASP 82 1_555 73.4 A HOH 134 D O HOH 1_555 A CA 124 B CA CA 1_555 A ASP 82 A OD1 ASP 82 1_555 74.3 A ASP 83 A OD1 ASP 83 1_555 A CA 125 C CA CA 1_555 A GLN 39 A OE1 GLN 39 1_555 113.0 A ASP 83 A OD1 ASP 83 1_555 A CA 125 C CA CA 1_555 A LEU 81 A O LEU 81 1_555 134.0 A GLN 39 A OE1 GLN 39 1_555 A CA 125 C CA CA 1_555 A LEU 81 A O LEU 81 1_555 95.6 A ASP 83 A OD1 ASP 83 1_555 A CA 125 C CA CA 1_555 A THR 38 A OG1 THR 38 1_555 103.7 A GLN 39 A OE1 GLN 39 1_555 A CA 125 C CA CA 1_555 A THR 38 A OG1 THR 38 1_555 112.8 A LEU 81 A O LEU 81 1_555 A CA 125 C CA CA 1_555 A THR 38 A OG1 THR 38 1_555 96.7 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 O VAL 42 A O VAL 42 A N GLU 49 A N GLU 49 1 14.50 2.30 115.30 129.80 A A A CA CB CG LEU LEU LEU 23 23 23 N 1 16.62 2.30 115.30 131.92 A A A CA CB CG LEU LEU LEU 59 59 59 N 1 14.88 2.30 115.30 130.18 A A A CA CB CG LEU LEU LEU 105 105 105 N 1 A A NE2 O GLN HOH 39 209 2.00 1_555 4_556 1 A ASN 44 -137.65 -110.50 1 A ASN 45 -92.86 -85.33 1 A LEU 59 -146.15 -33.46 1 A ASP 102 -65.49 1.08 1 A GLU 121 -62.60 -104.70 PARAM19X.PRO TOPOW.WATER PARAM.WATER TOP.CAL PARAM.CAL TOPH19X.PRO 16.8 0.263 0.012 0.21 0.21 1.8 8.0 424 8907 5.4 82.0 RANDOM 10000000.00 0.001 1 ISOTROPIC THROUGHOUT 2.0 0.26 0.20 5.0 0.22 0.17 1.8 8.0 321 1415 2 0 1092 0.011 1.4 24.4 2.15 0.178 0.067 0.243 1.86 7 161 10 4.2 15.5 5.6 1.80 8.0 1A4V 9928 -3 0.0699 1 14.33 4.1 82 1.8 1.9 1.03 0.337 0.31 64 data collection XENGEN data reduction XENGEN model building X-PLOR 3.1 refinement X-PLOR 3.1 data scaling XENGEN phasing X-PLOR 3.1 ALPHA-LACTALBUMIN ALPHA-LACTALBUMIN 1 N N 2 N N 2 N N 3 N N A LYS 5 A LYS 5 HELX_P A ILE 15 A ILE 15 1 1 11 A TYR 18 A TYR 18 HELX_P A GLY 20 A GLY 20 5 2 3 A LEU 23 A LEU 23 HELX_P A SER 34 A SER 34 1 3 12 A CYS 77 A CYS 77 HELX_P A PHE 80 A PHE 80 5 4 4 A THR 86 A THR 86 HELX_P A ILE 98 A ILE 98 1 5 13 A ILE 101 A ILE 101 HELX_P A TYR 103 A TYR 103 5 6 3 A LEU 105 A LEU 105 HELX_P A LEU 110 A LEU 110 1 7 6 A LEU 115 A LEU 115 HELX_P A TRP 118 A TRP 118 5 8 4 disulf 2.029 A CYS 6 A SG CYS 6 1_555 A CYS 120 A SG CYS 120 1_555 disulf 2.008 A CYS 28 A SG CYS 28 1_555 A CYS 111 A SG CYS 111 1_555 disulf 2.047 A CYS 61 A SG CYS 61 1_555 A CYS 77 A SG CYS 77 1_555 disulf 2.009 A CYS 73 A SG CYS 73 1_555 A CYS 91 A SG CYS 91 1_555 metalc 2.276 A CA 124 B CA CA 1_555 A LYS 79 A O LYS 79 1_555 metalc 2.197 A CA 124 B CA CA 1_555 A ASP 84 A O ASP 84 1_555 metalc 2.489 A CA 124 B CA CA 1_555 A ASP 87 A OD1 ASP 87 1_555 metalc 2.520 A CA 124 B CA CA 1_555 A ASP 88 A OD1 ASP 88 1_555 metalc 2.503 A CA 124 B CA CA 1_555 A HOH 150 D O HOH 1_555 metalc 2.552 A CA 124 B CA CA 1_555 A HOH 134 D O HOH 1_555 metalc 2.463 A CA 124 B CA CA 1_555 A ASP 82 A OD1 ASP 82 1_555 metalc 2.839 A CA 125 C CA CA 1_555 A ASP 83 A OD1 ASP 83 1_555 metalc 3.059 A CA 125 C CA CA 1_555 A GLN 39 A OE1 GLN 39 1_555 metalc 2.755 A CA 125 C CA CA 1_555 A LEU 81 A O LEU 81 1_555 metalc 2.674 A CA 125 C CA CA 1_555 A THR 38 A OG1 THR 38 1_555 LACTOSE SYNTHASE LACTOSE SYNTHASE, CALCIUM BINDING, ALPHA-LACTALBUMIN LALBA_HUMAN UNP 1 1 P00709 MRFFVPLFLVGILFPAILAKQFTKCELSQLLKDIDGYGGIALPELICTMFHTSGYDTQAIVENNESTEYGLFQISNKLWC KSSQVPQSRNICDISCDKFLDDDITDDIMCAKKILDIKGIDYWLAHKALCTEKLEQWLCEKL 20 142 1A4V 1 123 P00709 A 1 1 123 2 anti-parallel A ILE 41 A ILE 41 A GLU 43 A GLU 43 A THR 48 A THR 48 A TYR 50 A TYR 50 CALCIUM BINDING SITE IN THE CALCIUM-BINDING-ELBOW REGION IS REFERRED TO AS THE PRIMARY CALCIUM BINDING SITE. AT THIS SITE THE CALCIUM IS HAVING PENTAGONAL BYPYRAMIDAL COORDINATION. Unknown 5 THIS IS THE SECONDARY CALCIUM BINDING SITE. AT THIS SITE THE CALCIUM ION HAS TETRAHEDRAL COORDINATION. Unknown 4 BINDING SITE FOR RESIDUE CA A 124 Software 7 BINDING SITE FOR RESIDUE CA A 125 Software 5 A LYS 79 A LYS 79 5 1_555 A ASP 82 A ASP 82 5 1_555 A ASP 84 A ASP 84 5 1_555 A ASP 87 A ASP 87 5 1_555 A ASP 88 A ASP 88 5 1_555 A THR 38 A THR 38 4 1_555 A GLN 39 A GLN 39 4 1_555 A LEU 81 A LEU 81 4 1_555 A ASP 83 A ASP 83 4 1_555 A LYS 79 A LYS 79 7 1_555 A ASP 82 A ASP 82 7 1_555 A ASP 84 A ASP 84 7 1_555 A ASP 87 A ASP 87 7 1_555 A ASP 88 A ASP 88 7 1_555 A HOH 134 D HOH 7 1_555 A HOH 150 D HOH 7 1_555 A THR 38 A THR 38 5 1_555 A GLN 39 A GLN 39 5 1_555 A LEU 81 A LEU 81 5 1_555 A ASP 82 A ASP 82 5 1_555 A ASP 83 A ASP 83 5 1_555 18 P 21 21 2