0.031104 0.000000 0.015651 0.000000 0.039231 0.000000 0.000000 0.000000 0.032150 0.00000 0.00000 0.00000 Heinemann, U. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic 4 90.00 116.71 90.00 32.150 25.490 34.820 C10 H14 N5 O6 P 331.222 y 2'-DEOXYADENOSINE-5'-MONOPHOSPHATE DNA linking C9 H14 N3 O7 P 307.197 y 2'-DEOXYCYTIDINE-5'-MONOPHOSPHATE DNA linking C10 H14 N5 O7 P 347.221 y 2'-DEOXYGUANOSINE-5'-MONOPHOSPHATE DNA linking C10 H15 N2 O8 P 322.208 y THYMIDINE-5'-MONOPHOSPHATE DNA linking H2 O 18.015 WATER non-polymer C6 H16 N 1 102.198 TRIETHYLAMMONIUM ION non-polymer N 1 N O N 2 N P N 3 N O N 4 N O N 5 N O N 6 N C N 7 R C N 8 N O N 9 S C N 10 N O N 11 N C N 12 R C Y 13 N N Y 14 N C Y 15 N N Y 16 N C Y 17 N C N 18 N N Y 19 N N Y 20 N C Y 21 N N Y 22 N C N 23 N H N 24 N H N 25 N H N 26 N H N 27 N H N 28 N H N 29 N H N 30 N H N 31 N H N 32 N H N 33 N H N 34 N H N 35 N H N 36 N H N 37 N O N 38 N P N 39 N O N 40 N O N 41 N O N 42 N C N 43 R C N 44 N O N 45 S C N 46 N O N 47 N C N 48 R C N 49 N N N 50 N C N 51 N O N 52 N N N 53 N C N 54 N N N 55 N C N 56 N C N 57 N H N 58 N H N 59 N H N 60 N H N 61 N H N 62 N H N 63 N H N 64 N H N 65 N H N 66 N H N 67 N H N 68 N H N 69 N H N 70 N H N 71 N O N 72 N P N 73 N O N 74 N O N 75 N O N 76 N C N 77 R C N 78 N O N 79 S C N 80 N O N 81 N C N 82 R C Y 83 N N Y 84 N C Y 85 N N Y 86 N C N 87 N C N 88 N O N 89 N N N 90 N C N 91 N N N 92 N N Y 93 N C N 94 N H N 95 N H N 96 N H N 97 N H N 98 N H N 99 N H N 100 N H N 101 N H N 102 N H N 103 N H N 104 N H N 105 N H N 106 N H N 107 N H N 108 N O N 109 N P N 110 N O N 111 N O N 112 N O N 113 N C N 114 R C N 115 N O N 116 S C N 117 N O N 118 N C N 119 R C N 120 N N N 121 N C N 122 N O N 123 N N N 124 N C N 125 N O N 126 N C N 127 N C N 128 N C N 129 N H N 130 N H N 131 N H N 132 N H N 133 N H N 134 N H N 135 N H N 136 N H N 137 N H N 138 N H N 139 N H N 140 N H N 141 N H N 142 N H N 143 N H N 144 N O N 145 N H N 146 N H N 147 N N N 148 N C N 149 N C N 150 N C N 151 N C N 152 N C N 153 N C N 154 N H N 155 N H N 156 N H N 157 N H N 158 N H N 159 N H N 160 N H N 161 N H N 162 N H N 163 N H N 164 N H N 165 N H N 166 N H N 167 N H N 168 N H N 169 N H N 1 N sing N 2 N sing N 3 N doub N 4 N sing N 5 N sing N 6 N sing N 7 N sing N 8 N sing N 9 N sing N 10 N sing N 11 N sing N 12 N sing N 13 N sing N 14 N sing N 15 N sing N 16 N sing N 17 N sing N 18 N sing N 19 N sing N 20 N sing N 21 N sing N 22 N sing N 23 N sing Y 24 N sing Y 25 N sing Y 26 N doub N 27 N sing Y 28 N sing Y 29 N sing Y 30 N doub N 31 N sing Y 32 N doub N 33 N sing N 34 N sing Y 35 N sing Y 36 N doub N 37 N sing Y 38 N sing N 39 N sing N 40 N sing N 41 N doub N 42 N sing N 43 N sing N 44 N sing N 45 N sing N 46 N sing N 47 N sing N 48 N sing N 49 N sing N 50 N sing N 51 N sing N 52 N sing N 53 N sing N 54 N sing N 55 N sing N 56 N sing N 57 N sing N 58 N sing N 59 N sing N 60 N sing N 61 N sing N 62 N sing N 63 N sing N 64 N doub N 65 N sing N 66 N doub N 67 N sing N 68 N sing N 69 N sing N 70 N sing N 71 N doub N 72 N sing N 73 N sing N 74 N sing N 75 N sing N 76 N doub N 77 N sing N 78 N sing N 79 N sing N 80 N sing N 81 N sing N 82 N sing N 83 N sing N 84 N sing N 85 N sing N 86 N sing N 87 N sing N 88 N sing N 89 N sing N 90 N sing N 91 N sing N 92 N sing N 93 N sing N 94 N sing N 95 N sing N 96 N sing Y 97 N sing Y 98 N sing Y 99 N doub N 100 N sing Y 101 N sing N 102 N sing Y 103 N doub N 104 N doub N 105 N sing N 106 N sing N 107 N sing N 108 N sing N 109 N doub N 110 N sing N 111 N sing N 112 N sing N 113 N sing N 114 N sing N 115 N doub N 116 N sing N 117 N sing N 118 N sing N 119 N sing N 120 N sing N 121 N sing N 122 N sing N 123 N sing N 124 N sing N 125 N sing N 126 N sing N 127 N sing N 128 N sing N 129 N sing N 130 N sing N 131 N sing N 132 N sing N 133 N sing N 134 N sing N 135 N sing N 136 N sing N 137 N sing N 138 N doub N 139 N sing N 140 N sing N 141 N sing N 142 N doub N 143 N sing N 144 N sing N 145 N doub N 146 N sing N 147 N sing N 148 N sing N 149 N sing N 150 N sing N 151 N sing N 152 N sing N 153 N sing N 154 N sing N 155 N sing N 156 N sing N 157 N sing N 158 N sing N 159 N sing N 160 N sing N 161 N sing N 162 N sing N 163 N sing N 164 N sing N 165 N sing N 166 N sing N 167 N sing N 168 N sing N 169 N sing N 170 N sing N 171 N sing N 172 N sing N 173 N sing UK J.Mol.Biol. JMOBAK 0070 0022-2836 210 369 381 10.1016/0022-2836(89)90337-9 2600970 Crystallographic study of one turn of G/C-rich B-DNA. 1989 Adenine Press, Albany, NY Structure and Methods. DNA and RNA 0810 0-940030-31-4 3 39 53 Structural Features of G/C-Rich DNA Going A or B 1989 US Nucleosides and Nucleotides NUNUD5 0653 0732-8311 9 349 354 X-Ray Studies of DNA Aiming at Elucidating the Sequence-Structure Code 1990 10.2210/pdb1bd1/pdb pdb_00001bd1 0.031104 0.000000 0.015651 0.000000 0.039231 0.000000 0.000000 0.000000 0.032150 0.00000 0.00000 0.00000 ROOM TEMPERATURE 1 DIFFRACTOMETER x-ray 1 1.0 SEALED TUBE 3045.992 DNA (5'-D(*CP*CP*AP*GP*GP*CP*CP*TP*GP*G)-3') 1 syn polymer 102.198 TRIETHYLAMMONIUM ION 2 syn non-polymer 18.015 water 41 nat water no no (DC)(DC)(DA)(DG)(DG)(DC)(DC)(DT)(DG)(DG) CCAGGCCTGG A polydeoxyribonucleotide n n n n n n n n n n 2.09 41.21 MICRODIALYSIS MICRODIALYSIS, temperature 277.00K 277.00 WATER 1 ISOPROPANOL OR MPD 1 BIS-TRIS-PROPANE_HCL 1 MGCL2 1 ISOPROPANOL OR MPD 1 -9.128 1 19 A 1 A 10 -2.548 A_DC1:DG10_A 1 -6.889 0.051 0.312 -0.111 0.481 1 19 A 2 A 9 -1.059 A_DC2:DG9_A 2 -9.219 0.088 0.085 -0.117 -2.052 1 20 A 3 A 8 -0.527 A_DA3:DT8_A 3 -7.919 -0.016 0.169 -0.154 9.269 1 19 A 4 A 7 -1.528 A_DG4:DC7_A 4 -5.332 0.048 0.434 -0.119 2.626 1 19 A 5 A 6 -1.725 A_DG5:DC6_A 5 -13.075 -0.048 0.105 -0.173 -2.626 1 19 A 6 A 5 -1.725 A_DC6:DG5_A 6 -13.075 0.048 0.105 -0.173 -9.269 1 19 A 7 A 4 -1.528 A_DC7:DG4_A 7 -5.332 -0.048 0.434 -0.119 2.052 1 20 A 8 A 3 -0.527 A_DT8:DA3_A 8 -7.920 0.016 0.169 -0.154 -0.481 1 19 A 9 A 2 -1.059 A_DG9:DC2_A 9 -9.219 -0.088 0.085 -0.117 9.128 1 19 A 10 A 1 -2.548 A_DG10:DC1_A 10 -6.889 -0.051 0.312 -0.111 3.155 28.709 A A 1 2 13.876 A A 10 9 3.170 6.797 -0.273 0.589 AA_DC1DC2:DG9DG10_AA 1 3.861 -7.882 27.646 -0.321 1.406 2.912 51.207 A A 2 3 -10.202 A A 9 8 3.407 -8.779 -0.032 2.814 AA_DC2DA3:DT8DG9_AA 2 -0.851 0.989 50.493 3.846 -0.020 3.176 24.908 A A 3 4 14.295 A A 8 7 3.164 6.099 0.724 0.697 AA_DA3DG4:DC7DT8_AA 3 -1.877 4.399 24.089 -0.186 -2.233 3.645 36.557 A A 4 5 5.872 A A 7 6 3.634 3.675 -0.436 0.600 AA_DG4DG5:DC6DC7_AA 4 2.124 -3.393 36.318 0.392 1.023 3.407 41.893 A A 5 6 -0.715 A A 6 5 3.405 -0.511 0.000 -0.211 AA_DG5DC6:DG5DC6_AA 5 0.000 0.000 41.890 -0.239 0.000 3.645 36.557 A A 6 7 5.872 A A 5 4 3.634 3.675 0.436 0.600 AA_DC6DC7:DG4DG5_AA 6 -2.124 3.393 36.318 0.392 -1.023 3.176 24.908 A A 7 8 14.295 A A 4 3 3.164 6.099 -0.724 0.697 AA_DC7DT8:DA3DG4_AA 7 1.877 -4.399 24.089 -0.186 2.233 2.912 51.207 A A 8 9 -10.202 A A 3 2 3.407 -8.779 0.032 2.814 AA_DT8DG9:DC2DA3_AA 8 0.851 -0.989 50.493 3.846 0.020 3.155 28.709 A A 9 10 13.876 A A 2 1 3.170 6.797 0.273 0.589 AA_DG9DG10:DC1DC2_AA 9 -3.861 7.882 27.646 -0.321 -1.406 chem_comp_atom chem_comp_bond database_2 struct_site repository Initial release Version format compliance Version format compliance Data collection Database references Derived calculations 1 0 1990-01-15 1 1 2008-05-22 1 2 2011-07-13 1 3 2024-02-07 _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 BNL Y BNL 1989-08-16 REL REL TEA TRIETHYLAMMONIUM ION HOH water TEA 11 2 TEA TEA 11 A TEA 12 2 TEA TEA 12 A HOH 13 3 HOH HOH 13 A HOH 14 3 HOH HOH 14 A HOH 15 3 HOH HOH 15 A HOH 16 3 HOH HOH 16 A HOH 17 3 HOH HOH 17 A HOH 18 3 HOH HOH 18 A HOH 19 3 HOH HOH 19 A HOH 20 3 HOH HOH 20 A HOH 21 3 HOH HOH 21 A HOH 22 3 HOH HOH 22 A HOH 23 3 HOH HOH 23 A HOH 24 3 HOH HOH 24 A HOH 25 3 HOH HOH 25 A HOH 26 3 HOH HOH 26 A HOH 27 3 HOH HOH 27 A HOH 28 3 HOH HOH 28 A HOH 29 3 HOH HOH 29 A HOH 30 3 HOH HOH 30 A HOH 31 3 HOH HOH 31 A HOH 32 3 HOH HOH 32 A HOH 33 3 HOH HOH 33 A HOH 34 3 HOH HOH 34 A HOH 35 3 HOH HOH 35 A HOH 36 3 HOH HOH 36 A HOH 37 3 HOH HOH 37 A HOH 38 3 HOH HOH 38 A HOH 39 3 HOH HOH 39 A HOH 40 3 HOH HOH 40 A HOH 41 3 HOH HOH 41 A HOH 42 3 HOH HOH 42 A HOH 43 3 HOH HOH 43 A HOH 44 3 HOH HOH 44 A HOH 45 3 HOH HOH 45 A HOH 46 3 HOH HOH 46 A HOH 47 3 HOH HOH 47 A HOH 48 3 HOH HOH 48 A HOH 49 3 HOH HOH 49 A HOH 50 3 HOH HOH 50 A HOH 51 3 HOH HOH 51 A HOH 52 3 HOH HOH 52 A HOH 53 3 HOH HOH 53 A C 1 n 1 DC 1 A C 2 n 2 DC 2 A A 3 n 3 DA 3 A G 4 n 4 DG 4 A G 5 n 5 DG 5 A C 6 n 6 DC 6 A C 7 n 7 DC 7 A T 8 n 8 DT 8 A G 9 n 9 DG 9 A G 10 n 10 DG 10 A 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 -1.0000000000 0.0000000000 0.0000000000 0.0000000000 1.0000000000 0.0000000000 0.0000000000 0.0000000000 -1.0000000000 2_555 -x,y,-z crystal symmetry operation 0.0000000000 0.0000000000 0.0000000000 1 A HOH 40 D HOH 1 A C12 TEA 11 B C12 TEA 1 1 N 1 A C22 TEA 11 B C22 TEA 1 1 N 1 A C12 TEA 12 C C12 TEA 1 1 N 1 A C22 TEA 12 C C22 TEA 1 1 N 1 -8.60 0.70 108.00 99.40 A A A O4' C1' N1 DC DC DC 1 1 1 N 1 2.85 0.40 120.30 123.15 A A A C6 N1 C2 DC DC DC 1 1 1 N 1 4.24 0.60 118.90 123.14 A A A N1 C2 O2 DC DC DC 1 1 1 N 1 22.57 1.50 119.60 142.17 A A A OP1 P OP2 DC DC DC 2 2 2 N 1 -4.99 0.80 109.40 104.41 A A A O5' C5' C4' DC DC DC 2 2 2 N 1 -2.45 0.40 104.50 102.05 A A A O4' C4' C3' DC DC DC 2 2 2 N 1 -7.32 0.80 105.90 98.58 A A A O4' C1' C2' DC DC DC 2 2 2 N 1 7.18 1.10 110.50 117.68 A A A O3' P OP1 DC DA DA 2 3 3 Y 1 -5.94 0.70 108.00 102.06 A A A O4' C1' N9 DA DA DA 3 3 3 N 1 7.76 0.60 118.60 126.36 A A A C6 N1 C2 DA DA DA 3 3 3 N 1 -6.13 0.50 129.30 123.17 A A A N1 C2 N3 DA DA DA 3 3 3 N 1 -4.22 0.50 117.70 113.48 A A A C5 C6 N1 DA DA DA 3 3 3 N 1 3.73 0.60 118.60 122.33 A A A N1 C6 N6 DA DA DA 3 3 3 N 1 8.51 1.20 119.70 128.21 A A A C3' O3' P DA DA DG 3 3 4 Y 1 -7.41 0.80 102.40 94.99 A A A C3' C2' C1' DG DG DG 4 4 4 N 1 -4.80 0.80 105.90 101.10 A A A O4' C1' C2' DG DG DG 4 4 4 N 1 4.42 0.30 108.30 112.72 A A A O4' C1' N9 DG DG DG 4 4 4 N 1 -4.56 0.60 128.60 124.04 A A A C5 C6 O6 DG DG DG 4 4 4 N 1 10.37 1.20 110.70 121.07 A A A O5' P OP1 DG DG DG 5 5 5 N 1 2.41 0.30 108.30 110.71 A A A O4' C1' N9 DG DG DG 5 5 5 N 1 14.26 1.20 119.70 133.96 A A A C3' O3' P DG DG DC 5 5 6 Y 1 17.33 1.60 120.90 138.23 A A A P O5' C5' DC DC DC 6 6 6 N 1 7.80 1.20 119.70 127.50 A A A C3' O3' P DC DC DC 6 6 7 Y 1 21.79 1.50 119.60 141.39 A A A OP1 P OP2 DC DC DC 7 7 7 N 1 -5.34 0.80 109.40 104.06 A A A O5' C5' C4' DC DC DC 7 7 7 N 1 -6.20 0.70 108.00 101.80 A A A O4' C1' N1 DC DC DC 7 7 7 N 1 1.91 0.30 108.30 110.21 A A A O4' C1' N1 DT DT DT 8 8 8 N 1 4.61 0.60 114.60 119.21 A A A N1 C2 N3 DT DT DT 8 8 8 N 1 -7.13 0.60 127.20 120.07 A A A C2 N3 C4 DT DT DT 8 8 8 N 1 5.35 0.60 115.20 120.55 A A A N3 C4 C5 DT DT DT 8 8 8 N 1 -3.65 0.60 122.30 118.65 A A A N3 C2 O2 DT DT DT 8 8 8 N 1 12.78 1.20 119.70 132.48 A A A C3' O3' P DT DT DG 8 8 9 Y 1 -10.92 1.50 119.60 108.68 A A A OP1 P OP2 DG DG DG 9 9 9 N 1 -4.84 0.40 104.50 99.66 A A A O4' C4' C3' DG DG DG 9 9 9 N 1 4.28 0.70 110.30 114.58 A A A C1' O4' C4' DG DG DG 9 9 9 N 1 -3.17 0.50 128.60 125.43 A A A N3 C4 C5 DG DG DG 9 9 9 N 1 3.97 0.50 111.50 115.47 A A A C5 C6 N1 DG DG DG 9 9 9 N 1 -3.08 0.40 110.80 107.72 A A A C4 C5 N7 DG DG DG 9 9 9 N 1 -5.64 0.70 119.90 114.26 A A A N3 C2 N2 DG DG DG 9 9 9 N 1 4.56 0.30 108.30 112.86 A A A O4' C1' N9 DG DG DG 10 10 10 N 1 3.20 0.50 113.10 116.30 A A A N7 C8 N9 DG DG DG 10 10 10 N 1 A A O3' P DC DA 2 3 -0.078 0.012 1.607 1.529 Y 1 A A P O5' DA DA 3 3 0.082 0.010 1.593 1.675 N 1 A A P O5' DG DG 4 4 -0.096 0.010 1.593 1.497 N 1 A A P OP1 DG DG 5 5 -0.110 0.017 1.485 1.375 N 1 A A O3' P DG DC 5 6 0.093 0.012 1.607 1.700 Y 1 A A P O5' DC DC 7 7 0.139 0.010 1.593 1.732 N 1 A A P O5' DG DG 9 9 -0.062 0.010 1.593 1.531 N 1 A A P O5' DG DG 10 10 0.082 0.010 1.593 1.675 N 0.1600000 1.600 10.000 2106 1 3.000 TR isotropic TR isotropic TR isotropic 1.600 10.000 41 253 10 202 0 3.430 5.000 4.390 7.500 3.750 7.500 3.620 7.500 0.014 0.025 0.043 0.050 0.050 0.050 0.073 0.075 0.025 0.030 0.066 0.100 0.128 0.250 0.232 0.250 fix fix fix 1.400 1BD1 3062 1 refinement NUCLSQ CRYSTALLOGRAPHIC STUDY OF ONE TURN OF G/C-RICH B-DNA 1 N N 2 N N 2 N N 3 N N hydrog WATSON-CRICK A DC 1 A N3 DC 1 1_555 A DG 10 A N1 DG 10 2_555 hydrog WATSON-CRICK A DC 1 A N4 DC 1 1_555 A DG 10 A O6 DG 10 2_555 hydrog WATSON-CRICK A DC 1 A O2 DC 1 1_555 A DG 10 A N2 DG 10 2_555 hydrog WATSON-CRICK A DC 2 A N3 DC 2 1_555 A DG 9 A N1 DG 9 2_555 hydrog WATSON-CRICK A DC 2 A N4 DC 2 1_555 A DG 9 A O6 DG 9 2_555 hydrog WATSON-CRICK A DC 2 A O2 DC 2 1_555 A DG 9 A N2 DG 9 2_555 hydrog WATSON-CRICK A DA 3 A N1 DA 3 1_555 A DT 8 A N3 DT 8 2_555 hydrog WATSON-CRICK A DA 3 A N6 DA 3 1_555 A DT 8 A O4 DT 8 2_555 hydrog WATSON-CRICK A DG 4 A N1 DG 4 1_555 A DC 7 A N3 DC 7 2_555 hydrog WATSON-CRICK A DG 4 A N2 DG 4 1_555 A DC 7 A O2 DC 7 2_555 hydrog WATSON-CRICK A DG 4 A O6 DG 4 1_555 A DC 7 A N4 DC 7 2_555 hydrog WATSON-CRICK A DG 5 A N1 DG 5 1_555 A DC 6 A N3 DC 6 2_555 hydrog WATSON-CRICK A DG 5 A N2 DG 5 1_555 A DC 6 A O2 DC 6 2_555 hydrog WATSON-CRICK A DG 5 A O6 DG 5 1_555 A DC 6 A N4 DC 6 2_555 hydrog WATSON-CRICK A DC 6 A N3 DC 6 1_555 A DG 5 A N1 DG 5 2_555 hydrog WATSON-CRICK A DC 6 A N4 DC 6 1_555 A DG 5 A O6 DG 5 2_555 hydrog WATSON-CRICK A DC 6 A O2 DC 6 1_555 A DG 5 A N2 DG 5 2_555 hydrog WATSON-CRICK A DC 7 A N3 DC 7 1_555 A DG 4 A N1 DG 4 2_555 hydrog WATSON-CRICK A DC 7 A N4 DC 7 1_555 A DG 4 A O6 DG 4 2_555 hydrog WATSON-CRICK A DC 7 A O2 DC 7 1_555 A DG 4 A N2 DG 4 2_555 hydrog WATSON-CRICK A DT 8 A N3 DT 8 1_555 A DA 3 A N1 DA 3 2_555 hydrog WATSON-CRICK A DT 8 A O4 DT 8 1_555 A DA 3 A N6 DA 3 2_555 hydrog WATSON-CRICK A DG 9 A N1 DG 9 1_555 A DC 2 A N3 DC 2 2_555 hydrog WATSON-CRICK A DG 9 A N2 DG 9 1_555 A DC 2 A O2 DC 2 2_555 hydrog WATSON-CRICK A DG 9 A O6 DG 9 1_555 A DC 2 A N4 DC 2 2_555 hydrog WATSON-CRICK A DG 10 A N1 DG 10 1_555 A DC 1 A N3 DC 1 2_555 hydrog WATSON-CRICK A DG 10 A N2 DG 10 1_555 A DC 1 A O2 DC 1 2_555 hydrog WATSON-CRICK A DG 10 A O6 DG 10 1_555 A DC 1 A N4 DC 1 2_555 DNA B-DNA, DOUBLE HELIX, DNA 1BD1 PDB 1 1BD1 1 10 1BD1 1 10 1BD1 A 1 1 10 BINDING SITE FOR RESIDUE TEA A 11 A TEA 11 Software 7 BINDING SITE FOR RESIDUE TEA A 12 A TEA 12 Software 4 A DC 2 A DC 2 7 4_445 A DG 5 A DG 5 7 2_555 A DT 8 A DT 8 7 1_555 A DG 9 A DG 9 7 1_555 A HOH 13 D HOH 7 2_555 A HOH 19 D HOH 7 2_555 A HOH 29 D HOH 7 1_555 A DA 3 A DA 3 4 3_545 A DC 6 A DC 6 4 1_555 A DC 7 A DC 7 4 1_555 A HOH 50 D HOH 4 4_545 5 C 1 2 1