0.036914 0.000000 0.000000 0.000000 0.036914 0.000000 0.000000 0.000000 0.012212 0.00000 0.00000 0.00000 Peek, M.E. Lipscomb, L.A. Bertrand, J.A. Gao, Q. Roques, B.P. Garbay-Jaureguiberry, C. Williams, L.D. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic 16 90.00 90.00 90.00 27.090 27.090 81.890 C9 H13 Br N3 O7 P 386.093 n 5-BROMO-2'-DEOXY-CYTIDINE-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 C42 H48 N6 O2 4 668.870 BIS-(N-ETHYLPYRIDINIUM-(3-METHOXYCARBAZOLE))HEXANE-1,6-DIAMINE FLEXI-DI non-polymer H2 O 18.015 WATER non-polymer N 1 N BR N 2 N P N 3 N O N 4 N O N 5 N O N 6 N N N 7 N C N 8 N C N 9 N O N 10 N N N 11 N C N 12 N N N 13 N C N 14 N C N 15 N C N 16 R C N 17 N O N 18 R C N 19 S C N 20 N O N 21 N O N 22 N H 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 O N 36 N P N 37 N O N 38 N O N 39 N O N 40 N C N 41 R C N 42 N O N 43 S C N 44 N O N 45 N C N 46 R C N 47 N N N 48 N C N 49 N O N 50 N N N 51 N C N 52 N N N 53 N C N 54 N C N 55 N H N 56 N H 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 O N 70 N P N 71 N O N 72 N O N 73 N O N 74 N C N 75 R C N 76 N O N 77 S C N 78 N O N 79 N C N 80 R C Y 81 N N Y 82 N C Y 83 N N Y 84 N C N 85 N C N 86 N O N 87 N N N 88 N C N 89 N N N 90 N N Y 91 N C N 92 N H N 93 N H 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 Y 106 N C Y 107 N N Y 108 N C Y 109 N C Y 110 N C Y 111 N C Y 112 N N Y 113 N C Y 114 N C Y 115 N C N 116 N O Y 117 N C Y 118 N C Y 119 N C Y 120 N C Y 121 N C Y 122 N C Y 123 N C N 124 N C N 125 N C N 126 N C N 127 N N N 128 N C N 129 N C N 130 N C Y 131 N C Y 132 N N Y 133 N C Y 134 N C Y 135 N C Y 136 N C Y 137 N N Y 138 N C Y 139 N C Y 140 N C N 141 N O Y 142 N C Y 143 N C Y 144 N C Y 145 N C Y 146 N C Y 147 N C Y 148 N C N 149 N C N 150 N C N 151 N C N 152 N N N 153 N C N 154 N C N 155 N C 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 170 N H N 171 N H N 172 N H N 173 N H N 174 N H N 175 N H N 176 N H N 177 N H N 178 N H N 179 N H N 180 N H N 181 N H N 182 N H N 183 N H N 184 N H N 185 N H N 186 N H N 187 N H N 188 N H N 189 N H N 190 N H N 191 N H N 192 N H N 193 N H N 194 N H N 195 N H N 196 N H N 197 N H N 198 N H N 199 N H N 200 N H N 201 N H N 202 N H N 203 N H N 204 N O N 205 N H N 206 N H N 1 N sing N 2 N doub N 3 N sing 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 doub N 12 N sing N 13 N doub N 14 N sing N 15 N doub 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 N 24 N sing N 25 N sing N 26 N sing N 27 N sing N 28 N sing N 29 N sing N 30 N sing N 31 N sing N 32 N sing N 33 N sing N 34 N sing N 35 N sing N 36 N sing N 37 N sing N 38 N doub N 39 N sing N 40 N sing N 41 N sing 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 doub N 62 N sing N 63 N doub N 64 N sing N 65 N sing N 66 N sing N 67 N sing N 68 N doub N 69 N sing N 70 N sing N 71 N sing N 72 N sing N 73 N doub N 74 N sing N 75 N sing N 76 N sing 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 Y 94 N sing Y 95 N sing Y 96 N doub N 97 N sing Y 98 N sing N 99 N sing Y 100 N doub N 101 N doub N 102 N sing N 103 N sing N 104 N sing N 105 N sing N 106 N doub N 107 N sing N 108 N sing N 109 N sing Y 110 N doub Y 111 N sing N 112 N sing Y 113 N sing N 114 N sing Y 115 N doub N 116 N sing Y 117 N sing N 118 N sing Y 119 N doub Y 120 N sing N 121 N sing Y 122 N sing N 123 N sing Y 124 N sing Y 125 N sing N 126 N sing Y 127 N sing Y 128 N doub N 129 N sing Y 130 N doub N 131 N sing N 132 N sing Y 133 N sing N 134 N sing Y 135 N doub N 136 N sing Y 137 N doub Y 138 N doub Y 139 N sing Y 140 N sing Y 141 N sing N 142 N sing N 143 N sing N 144 N sing N 145 N sing 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 Y 163 N doub Y 164 N sing N 165 N sing Y 166 N sing N 167 N sing Y 168 N doub N 169 N sing Y 170 N sing N 171 N sing Y 172 N doub Y 173 N sing N 174 N sing Y 175 N sing N 176 N sing Y 177 N sing Y 178 N sing N 179 N sing Y 180 N sing Y 181 N doub N 182 N sing Y 183 N doub N 184 N sing N 185 N sing Y 186 N sing N 187 N sing Y 188 N doub N 189 N sing Y 190 N doub Y 191 N doub Y 192 N sing Y 193 N sing Y 194 N sing N 195 N sing N 196 N sing N 197 N sing N 198 N sing N 199 N sing N 200 N sing N 201 N sing N 202 N sing N 203 N sing N 204 N sing N 205 N sing N 206 N sing N 207 N sing N 208 N sing N 209 N sing N 210 N sing N 211 N sing N 212 N sing N 213 N sing N 214 N sing N 215 N sing N 216 N sing US Biochemistry BICHAW 0033 0006-2960 33 3794 3800 10.1021/bi00179a002 8142381 DNA distortion in bis-intercalated complexes. 1994 10.2210/pdb154d/pdb pdb_0000154d 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 293.00 1 AREA DETECTOR SDMS x-ray 1 1.0 ROTATING ANODE RIGAKU RU200 1270.714 DNA (5'-D(*(CBR)P*GP*CP*G)-3') 2 syn polymer 668.870 BIS-(N-ETHYLPYRIDINIUM-(3-METHOXYCARBAZOLE))HEXANE-1,6-DIAMINE 1 syn non-polymer 18.015 water 27 nat water no yes (CBR)(DG)(DC)(DG) CGCG A,B polydeoxyribonucleotide n n n n 2.96 58.39 VAPOR DIFFUSION, SITTING DROP 7.00 pH 7.00, VAPOR DIFFUSION, SITTING DROP ROOM TEMPERATURE WATER 1 MPD 1 NA CACODYLATE 1 MGCL2 1 WATER 2 MPD 2 2.524 1 19 A 1 B 8 1.747 A_CBR1:DG8_B 1 -4.268 0.357 0.177 -0.348 -7.802 1 19 A 2 B 7 -2.794 A_DG2:DC7_B 2 3.583 -0.465 -0.277 -0.433 3.921 1 19 A 3 B 6 -0.516 A_DC3:DG6_B 3 7.024 -0.242 -0.139 -0.305 -4.085 1 19 A 4 B 5 4.106 A_DG4:CBR5_B 4 -6.668 -0.132 0.106 -0.212 6.877 18.469 A A 1 2 3.424 B B 8 7 6.996 1.076 0.953 -0.131 AA_CBR1DG2:DC7DG8_BB 1 6.392 -20.343 17.303 -1.697 4.695 3.152 26.808 A A 2 3 -18.881 B B 7 6 3.368 -8.598 0.521 0.014 AA_DG2DC3:DG6DC7_BB 2 -1.695 3.723 25.360 2.309 -1.574 6.992 24.603 A A 3 4 -0.583 B B 6 5 6.919 -0.247 -0.985 -0.380 AA_DC3DG4:CBR5DG6_BB 3 -3.829 9.021 24.306 -0.730 -0.206 chem_comp_atom chem_comp_bond database_2 struct_conn struct_site repository Initial release Version format compliance Version format compliance Data collection Database references Derived calculations 1 0 1994-08-31 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_conn.pdbx_leaving_atom_flag _struct_site.pdbx_auth_asym_id _struct_site.pdbx_auth_comp_id _struct_site.pdbx_auth_seq_id BNL Y NDB 1993-12-14 REL FLD BIS-(N-ETHYLPYRIDINIUM-(3-METHOXYCARBAZOLE))HEXANE-1,6-DIAMINE HOH water FLD 9 2 FLD FLD 9 B HOH 12 3 HOH HOH 12 A HOH 17 3 HOH HOH 17 A HOH 18 3 HOH HOH 18 A HOH 20 3 HOH HOH 20 A HOH 24 3 HOH HOH 24 A HOH 26 3 HOH HOH 26 A HOH 27 3 HOH HOH 27 A HOH 28 3 HOH HOH 28 A HOH 32 3 HOH HOH 32 A HOH 34 3 HOH HOH 34 A HOH 10 3 HOH HOH 10 B HOH 11 3 HOH HOH 11 B HOH 13 3 HOH HOH 13 B HOH 14 3 HOH HOH 14 B HOH 15 3 HOH HOH 15 B HOH 16 3 HOH HOH 16 B HOH 19 3 HOH HOH 19 B HOH 21 3 HOH HOH 21 B HOH 22 3 HOH HOH 22 B HOH 23 3 HOH HOH 23 B HOH 25 3 HOH HOH 25 B HOH 29 3 HOH HOH 29 B HOH 30 3 HOH HOH 30 B HOH 31 3 HOH HOH 31 B HOH 33 3 HOH HOH 33 B HOH 35 3 HOH HOH 35 B HOH 36 3 HOH HOH 36 B C 1 n 1 CBR 1 A G 2 n 2 DG 2 A C 3 n 3 DC 3 A G 4 n 4 DG 4 A C 5 n 1 CBR 5 B G 6 n 2 DG 6 B C 7 n 3 DC 7 B G 8 n 4 DG 8 B author_defined_assembly 2 dimeric A CBR 1 A CBR 1 DC B CBR 5 B CBR 1 DC 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 -6.95 0.90 105.70 98.75 A A A O5' P OP2 DG DG DG 2 2 2 N 1 -14.62 1.60 120.90 106.28 A A A P O5' C5' DG DG DG 2 2 2 N 1 4.34 0.30 108.30 112.64 A A A O4' C1' N9 DG DG DG 2 2 2 N 1 -4.92 0.60 125.10 120.18 A A A C6 N1 C2 DG DG DG 2 2 2 N 1 5.12 0.60 123.90 129.02 A A A N1 C2 N3 DG DG DG 2 2 2 N 1 -3.08 0.50 111.90 108.82 A A A C2 N3 C4 DG DG DG 2 2 2 N 1 4.80 0.50 111.50 116.30 A A A C5 C6 N1 DG DG DG 2 2 2 N 1 5.64 0.90 116.20 121.84 A A A N1 C2 N2 DG DG DG 2 2 2 N 1 -10.77 0.70 119.90 109.13 A A A N3 C2 N2 DG DG DG 2 2 2 N 1 -5.03 0.60 128.60 123.57 A A A C5 C6 O6 DG DG DG 2 2 2 N 1 14.10 1.20 119.70 133.80 A A A C3' O3' P DG DG DC 2 2 3 Y 1 -8.60 0.90 105.70 97.10 A A A O5' P OP1 DC DC DC 3 3 3 N 1 -11.00 0.80 109.40 98.40 A A A O5' C5' C4' DC DC DC 3 3 3 N 1 -21.19 1.60 120.90 99.71 A A A P O5' C5' DC DC DC 3 3 3 N 1 -8.68 0.40 104.50 95.82 A A A O4' C4' C3' DC DC DC 3 3 3 N 1 -15.72 1.00 110.10 94.38 A A A C1' O4' C4' DC DC DC 3 3 3 N 1 -4.87 0.80 105.90 101.03 A A A O4' C1' C2' DC DC DC 3 3 3 N 1 4.69 0.50 119.90 124.59 A A A C2 N3 C4 DC DC DC 3 3 3 N 1 -4.96 0.40 121.90 116.94 A A A N3 C4 C5 DC DC DC 3 3 3 N 1 4.34 0.60 118.90 123.24 A A A N1 C2 O2 DC DC DC 3 3 3 N 1 8.57 1.20 119.70 128.27 A A A C3' O3' P DC DC DG 3 3 4 Y 1 -5.99 0.80 109.40 103.41 A A A O5' C5' C4' DG DG DG 4 4 4 N 1 -6.38 0.40 104.50 98.12 A A A O4' C4' C3' DG DG DG 4 4 4 N 1 7.31 1.10 109.80 117.11 A A A C5' C4' O4' DG DG DG 4 4 4 N 1 -6.38 0.70 102.20 95.82 A A A C4' C3' C2' DG DG DG 4 4 4 N 1 5.48 0.30 108.30 113.78 A A A O4' C1' N9 DG DG DG 4 4 4 N 1 -7.07 0.60 125.10 118.03 A A A C6 N1 C2 DG DG DG 4 4 4 N 1 6.81 0.60 123.90 130.71 A A A N1 C2 N3 DG DG DG 4 4 4 N 1 -3.21 0.50 111.90 108.69 A A A C2 N3 C4 DG DG DG 4 4 4 N 1 5.79 0.50 111.50 117.29 A A A C5 C6 N1 DG DG DG 4 4 4 N 1 -10.84 0.70 119.90 109.06 A A A N3 C2 N2 DG DG DG 4 4 4 N 1 -3.79 0.60 128.60 124.81 A A A C5 C6 O6 DG DG DG 4 4 4 N 1 -10.29 1.60 120.90 110.61 B B B P O5' C5' DG DG DG 6 6 6 N 1 -5.95 0.80 105.90 99.95 B B B O4' C1' C2' DG DG DG 6 6 6 N 1 4.35 0.30 108.30 112.65 B B B O4' C1' N9 DG DG DG 6 6 6 N 1 -6.61 0.60 125.10 118.49 B B B C6 N1 C2 DG DG DG 6 6 6 N 1 6.16 0.60 123.90 130.06 B B B N1 C2 N3 DG DG DG 6 6 6 N 1 5.84 0.50 111.50 117.34 B B B C5 C6 N1 DG DG DG 6 6 6 N 1 -10.52 0.70 119.90 109.38 B B B N3 C2 N2 DG DG DG 6 6 6 N 1 -5.54 0.60 128.60 123.06 B B B C5 C6 O6 DG DG DG 6 6 6 N 1 9.50 1.20 119.70 129.20 B B B C3' O3' P DG DG DC 6 6 7 Y 1 -7.52 0.90 105.70 98.18 B B B O5' P OP1 DC DC DC 7 7 7 N 1 -13.43 1.60 120.90 107.47 B B B P O5' C5' DC DC DC 7 7 7 N 1 -7.83 0.40 104.50 96.67 B B B O4' C4' C3' DC DC DC 7 7 7 N 1 -8.76 1.00 110.10 101.34 B B B C1' O4' C4' DC DC DC 7 7 7 N 1 5.91 0.50 119.90 125.81 B B B C2 N3 C4 DC DC DC 7 7 7 N 1 -5.49 0.40 121.90 116.41 B B B N3 C4 C5 DC DC DC 7 7 7 N 1 5.44 0.60 118.90 124.34 B B B N1 C2 O2 DC DC DC 7 7 7 N 1 11.44 1.20 119.70 131.14 B B B C3' O3' P DC DC DG 7 7 8 Y 1 -5.40 0.90 105.70 100.30 B B B O5' P OP1 DG DG DG 8 8 8 N 1 -3.64 0.40 104.50 100.86 B B B O4' C4' C3' DG DG DG 8 8 8 N 1 10.46 1.10 109.80 120.26 B B B C5' C4' O4' DG DG DG 8 8 8 N 1 -6.09 0.60 125.10 119.01 B B B C6 N1 C2 DG DG DG 8 8 8 N 1 5.38 0.60 123.90 129.28 B B B N1 C2 N3 DG DG DG 8 8 8 N 1 6.61 0.50 111.50 118.11 B B B C5 C6 N1 DG DG DG 8 8 8 N 1 -9.43 0.70 119.90 110.47 B B B N3 C2 N2 DG DG DG 8 8 8 N 1 -3.64 0.60 128.60 124.96 B B B C5 C6 O6 DG DG DG 8 8 8 N 1 A A P O5' DG DG 2 2 0.082 0.010 1.593 1.675 N 1 A A O3' C3' DG DG 2 2 -0.054 0.006 1.419 1.365 N 1 A A C6 N1 DG DG 2 2 -0.064 0.007 1.391 1.327 N 1 A A N7 C8 DG DG 2 2 0.042 0.006 1.305 1.347 N 1 A A C8 N9 DG DG 2 2 -0.047 0.007 1.374 1.327 N 1 A A C2 N2 DG DG 2 2 -0.113 0.010 1.341 1.228 N 1 A A P O5' DC DC 3 3 0.077 0.010 1.593 1.670 N 1 A A O5' C5' DC DC 3 3 0.103 0.016 1.440 1.543 N 1 A A C4' C3' DC DC 3 3 0.078 0.010 1.529 1.607 N 1 A A C2' C1' DC DC 3 3 0.071 0.010 1.519 1.590 N 1 A A O3' C3' DC DC 3 3 -0.054 0.006 1.419 1.365 N 1 A A N3 C4 DC DC 3 3 0.049 0.007 1.335 1.384 N 1 A A C4' C3' DG DG 4 4 0.081 0.010 1.529 1.610 N 1 A A C2' C1' DG DG 4 4 0.070 0.010 1.519 1.589 N 1 A A O3' C3' DG DG 4 4 -0.043 0.006 1.419 1.376 N 1 A A C6 N1 DG DG 4 4 -0.057 0.007 1.391 1.334 N 1 A A N7 C8 DG DG 4 4 0.037 0.006 1.305 1.342 N 1 A A C2 N2 DG DG 4 4 -0.094 0.010 1.341 1.247 N 1 B B C2' C1' DG DG 6 6 0.086 0.010 1.519 1.605 N 1 B B C6 N1 DG DG 6 6 -0.059 0.007 1.391 1.332 N 1 B B C2 N2 DG DG 6 6 -0.116 0.010 1.341 1.225 N 1 B B C4' C3' DC DC 7 7 0.066 0.010 1.529 1.595 N 1 B B O4' C1' DC DC 7 7 0.068 0.011 1.420 1.488 N 1 B B O3' C3' DC DC 7 7 -0.041 0.006 1.419 1.378 N 1 B B C4' C3' DG DG 8 8 0.068 0.010 1.529 1.597 N 1 B B C6 N1 DG DG 8 8 -0.063 0.007 1.391 1.328 N 1 B B N7 C8 DG DG 8 8 0.044 0.006 1.305 1.349 N 1 B B C8 N9 DG DG 8 8 -0.062 0.007 1.374 1.312 N 1 B B C2 N2 DG DG 8 8 -0.097 0.010 1.341 1.244 N 0.239 2.500 7.100 1183 99.700 1 2.000 TR isotropic TR isotropic 2.500 7.100 27 237 52 158 0 0.021 fix fix 2.500 154D 2139 1183 2.000 1 refinement PROLSQ (MODIFIED BY G.J.QUIGLEY) refinement MODIFIED BY G.J.QUIGLEY DNA DISTORTION IN BIS-INTERCALATED COMPLEXES 1 N N 1 N N 2 N N 3 N N 3 N N covale 1.606 both A CBR 1 A O3' CBR 1 1_555 A DG 2 A P DG 2 1_555 covale 1.597 both B CBR 5 B O3' CBR 1 1_555 B DG 6 B P DG 2 1_555 hydrog WATSON-CRICK A CBR 1 A N3 CBR 1 1_555 B DG 8 B N1 DG 4 1_555 hydrog WATSON-CRICK A CBR 1 A N4 CBR 1 1_555 B DG 8 B O6 DG 4 1_555 hydrog WATSON-CRICK A CBR 1 A O2 CBR 1 1_555 B DG 8 B N2 DG 4 1_555 hydrog WATSON-CRICK A DG 2 A N1 DG 2 1_555 B DC 7 B N3 DC 3 1_555 hydrog WATSON-CRICK A DG 2 A N2 DG 2 1_555 B DC 7 B O2 DC 3 1_555 hydrog WATSON-CRICK A DG 2 A O6 DG 2 1_555 B DC 7 B N4 DC 3 1_555 hydrog WATSON-CRICK A DC 3 A N3 DC 3 1_555 B DG 6 B N1 DG 2 1_555 hydrog WATSON-CRICK A DC 3 A N4 DC 3 1_555 B DG 6 B O6 DG 2 1_555 hydrog WATSON-CRICK A DC 3 A O2 DC 3 1_555 B DG 6 B N2 DG 2 1_555 hydrog WATSON-CRICK A DG 4 A N1 DG 4 1_555 B CBR 5 B N3 CBR 1 1_555 hydrog WATSON-CRICK A DG 4 A N2 DG 4 1_555 B CBR 5 B O2 CBR 1 1_555 hydrog WATSON-CRICK A DG 4 A O6 DG 4 1_555 B CBR 5 B N4 CBR 1 1_555 DNA RIGHT HANDED DNA, DOUBLE HELIX, COMPLEXED WITH DRUG, MODIFIED, DNA 154D PDB 1 154D 1 4 154D 1 4 154D A 1 1 4 5 8 154D 5 8 154D B 1 1 4 BINDING SITE FOR RESIDUE FLD B 9 B FLD 9 Software 11 A CBR 1 A CBR 1 11 1_555 A DG 2 A DG 2 11 1_555 A DC 3 A DC 3 11 1_555 A DG 4 A DG 4 11 1_555 B CBR 5 B CBR 1 11 1_555 B DG 6 B DG 2 11 1_555 B DC 7 B DC 3 11 6_455 B DC 7 B DC 3 11 1_555 B DG 8 B DG 4 11 1_555 B HOH 11 E HOH 11 1_555 B HOH 33 E HOH 11 1_555 92 P 41 21 2