#PDB cf residue atom bb_p bb_s bb_f chi_p chi_s HB-D HB-I REF pred #--------------------------------------------------------------------------------------------- 1vdj h VAL 132 N 0.00 1.03 -0.99 3.15 2.07 -2.05 -1.30 116.25 118.16 1vdj h VAL 132 Ca 0.00 -0.34 0.12 0.00 0.82 0.00 0.00 66.70 67.30 1vdj h VAL 132 Cb 0.00 -0.04 -0.14 0.00 -1.52 0.00 0.00 31.29 29.59 1vdj h VAL 132 CO 0.00 0.18 -0.48 -0.46 0.02 0.00 0.00 177.57 176.83 1vdj n ASN 133 N -4.61 -0.83 -0.05 0.57 0.23 -1.26 0.15 115.26 109.46 1vdj n ASN 133 Ca 0.13 1.75 -0.12 0.00 -0.53 0.00 0.00 54.58 55.81 1vdj n ASN 133 Cb 0.19 -0.32 -0.07 0.00 -2.08 0.00 0.00 39.78 37.51 1vdj n ASN 133 CO 0.00 0.00 0.00 0.24 -0.93 0.00 0.00 177.26 176.57 1vdj h MET 134 N 0.00 0.28 -1.04 -3.83 2.86 -1.84 -1.43 114.93 109.94 1vdj h MET 134 Ca 0.26 -0.12 0.34 0.00 -2.06 0.00 0.00 59.70 58.12 1vdj h MET 134 Cb 0.51 -0.01 -0.15 0.00 0.06 0.00 0.00 31.60 32.01 1vdj h MET 134 CO -0.96 0.60 0.60 0.22 1.06 0.00 0.00 176.91 178.43 1vdj h ASP 135 N -0.05 0.46 0.11 1.22 1.82 0.38 0.18 116.42 120.55 1vdj h ASP 135 Ca 0.03 0.19 -0.01 0.00 -0.39 0.00 0.00 57.03 56.86 1vdj h ASP 135 Cb 0.51 0.15 0.00 0.00 0.68 0.00 0.00 39.33 40.67 1vdj h ASP 135 CO 0.02 -0.17 -0.05 0.25 -1.61 0.00 0.00 179.24 177.68 1vdj h LEU 136 N 0.27 -0.13 -0.92 2.28 5.85 -0.11 -0.25 115.31 122.30 1vdj h LEU 136 Ca 0.75 -0.37 0.30 0.00 0.84 0.00 0.00 57.88 59.39 1vdj h LEU 136 Cb 1.83 0.03 -0.17 0.00 0.37 0.00 0.00 40.66 42.72 1vdj h LEU 136 CO -0.59 0.49 0.17 0.54 -0.34 0.00 0.00 178.44 178.71 1vdj n ARG 137 N -4.85 -0.07 -0.02 1.25 5.12 0.38 0.81 116.66 119.30 1vdj n ARG 137 Ca -0.06 1.34 -0.16 0.00 -1.93 0.00 0.00 57.85 57.04 1vdj n ARG 137 Cb 0.24 -2.22 -0.13 0.00 -1.16 0.00 0.00 32.46 29.20 1vdj n ARG 137 CO 0.00 0.00 0.00 0.00 -1.93 0.00 0.00 177.63 175.70 1vdj h ALA 138 N 1.84 -0.01 -1.79 7.54 0.00 -0.96 0.16 119.26 126.05 1vdj h ALA 138 Ca 0.63 -0.54 0.52 0.00 0.00 0.00 0.00 54.91 55.52 1vdj h ALA 138 Cb 1.44 0.03 -0.07 0.00 0.00 0.00 0.00 17.79 19.19 1vdj h ALA 138 CO -0.82 0.15 1.29 -0.97 0.00 0.00 0.00 179.25 178.90 1vdj h ASN 139 N -0.60 0.00 0.00 0.00 -1.24 0.23 -0.57 115.58 113.39 1vdj h ASN 139 Ca -0.05 0.00 0.00 0.00 0.71 0.00 0.00 56.30 56.96 1vdj h ASN 139 Cb 1.19 0.00 0.00 0.00 0.73 0.00 0.00 38.32 40.24 1vdj h ASN 139 CO 0.06 0.00 -0.48 0.18 -1.29 0.00 0.00 177.43 175.90 1vdj n LEU 140 N -3.99 1.00 0.00 0.34 4.32 0.24 -4.71 117.00 114.20 1vdj n LEU 140 Ca 0.40 0.21 0.00 0.00 -0.02 0.00 0.00 56.01 56.60 1vdj n LEU 140 Cb 1.83 -0.63 0.00 0.00 -1.62 0.00 0.00 43.42 43.00 1vdj n LEU 140 CO 0.44 -0.40 0.23 1.17 -1.22 0.00 0.00 177.39 177.61 1vdj n LYS 141 N -3.51 0.00 -1.80 3.23 4.81 0.55 -4.91 118.16 116.53 1vdj n LYS 141 Ca -0.07 0.45 0.00 0.00 -0.87 0.00 0.00 58.31 57.83 1vdj n LYS 141 Cb 0.25 -0.79 0.00 0.00 0.02 0.00 0.00 35.03 34.51 1vdj n LYS 141 CO 0.00 0.00 0.00 1.04 1.17 0.00 0.00 177.40 179.61 1vdj n GLN 142 N -1.49 -5.00 -1.55 1.64 1.13 -0.29 -4.76 117.38 107.06 1vdj n GLN 142 Ca 0.00 3.69 0.00 0.00 -1.94 0.00 0.00 57.00 58.75 1vdj n GLN 142 Cb 0.00 -4.14 0.00 0.00 0.11 0.00 0.00 30.24 26.21 1vdj n GLN 142 CO 0.00 0.00 0.00 1.55 -1.44 0.00 0.00 177.06 177.17 1vdj n VAL 143 N -0.40 -0.67 -3.62 5.09 3.14 -1.26 -4.83 118.33 115.77 1vdj n VAL 143 Ca 0.00 0.11 -0.37 0.00 -2.96 0.00 0.00 64.34 61.12 1vdj n VAL 143 Cb 0.00 -1.24 -0.06 0.00 -1.06 0.00 0.00 33.84 31.48 1vdj n VAL 143 CO 0.00 0.00 0.00 -1.59 -6.46 0.00 0.00 176.83 168.78 1vdj s LYS 144 N -0.22 3.24 0.23 1.45 -2.85 -0.95 -5.03 119.74 115.61 1vdj s LYS 144 Ca 0.00 -3.15 0.10 0.00 -1.00 0.00 0.00 55.97 51.92 1vdj s LYS 144 Cb 0.00 -3.97 -0.05 0.00 -2.06 0.00 0.00 37.83 31.75 1vdj s LYS 144 CO 0.00 -1.25 -0.18 -1.59 0.10 0.00 0.00 175.35 172.43 1vdj s LYS 145 N -1.12 1.48 0.00 1.78 -2.85 -1.26 -1.14 119.74 116.63 1vdj s LYS 145 Ca 0.26 -1.65 0.00 0.00 -1.00 0.00 0.00 55.97 53.58 1vdj s LYS 145 Cb -0.09 -1.45 0.00 0.00 -2.06 0.00 0.00 37.83 34.23 1vdj s LYS 145 CO -0.11 0.26 0.44 -1.91 0.10 0.00 0.00 175.35 174.13 1vdj n GLU 146 N -0.41 -0.44 -0.79 1.78 2.13 -0.49 -4.98 120.64 117.44 1vdj n GLU 146 Ca -0.07 -0.44 0.11 0.00 0.66 0.00 0.00 57.16 57.42 1vdj n GLU 146 Cb 0.60 -0.93 -0.03 0.00 0.27 0.00 0.00 31.44 31.34 1vdj n GLU 146 CO 0.00 0.00 0.00 -0.25 -0.41 0.00 0.00 177.13 176.47 1vdj n ASP 147 N -0.06 -4.71 0.00 4.31 9.92 -1.12 -4.85 116.55 120.04 1vdj n ASP 147 Ca 0.00 0.38 0.00 0.00 -0.53 0.00 0.00 54.79 54.64 1vdj n ASP 147 Cb 0.02 -2.44 0.00 0.00 -0.64 0.00 0.00 41.12 38.06 1vdj n ASP 147 CO 0.00 0.00 0.00 1.07 0.13 0.00 0.00 177.20 178.40 1vdj n THR 148 N -2.97 0.00 0.00 -3.53 5.66 -1.26 -3.54 114.28 108.64 1vdj n THR 148 Ca -0.00 0.00 0.00 0.00 -3.05 0.00 0.00 64.05 61.00 1vdj n THR 148 Cb 0.36 0.00 0.00 0.00 -1.55 0.00 0.00 70.33 69.14 1vdj n THR 148 CO 0.00 0.00 0.00 -0.62 -3.05 0.00 0.00 175.07 171.40 1vdj n GLU 149 N 0.00 0.00 -3.45 1.09 1.02 -1.26 -4.97 120.64 113.08 1vdj n GLU 149 Ca 0.00 0.00 -0.06 0.00 -0.02 0.00 0.00 57.16 57.08 1vdj n GLU 149 Cb 0.00 0.00 -0.07 0.00 -0.02 0.00 0.00 31.44 31.35 1vdj n GLU 149 CO 0.00 0.00 0.00 -1.59 1.18 0.00 0.00 177.13 176.72 1vdj s LYS 150 N 0.00 0.39 -0.32 3.49 -2.85 -1.23 -5.07 119.74 114.14 1vdj s LYS 150 Ca 0.00 0.84 -0.01 0.00 -1.00 0.00 0.00 55.97 55.79 1vdj s LYS 150 Cb 0.00 0.04 0.13 0.00 -2.06 0.00 0.00 37.83 35.93 1vdj s LYS 150 CO 0.00 -0.48 0.21 -1.21 0.10 0.00 0.00 175.35 173.97 1vdj s GLU 151 N 2.64 0.39 -0.22 1.78 2.02 -1.26 -1.39 118.70 122.66 1vdj s GLU 151 Ca 0.08 -0.82 -0.24 0.00 0.02 0.00 0.00 54.97 54.00 1vdj s GLU 151 Cb -0.14 -1.10 -0.01 0.00 0.10 0.00 0.00 34.13 32.98 1vdj s GLU 151 CO -0.16 -1.11 0.81 0.15 0.02 0.00 0.00 175.26 174.97 1vdj s LYS 152 N 1.66 4.22 -0.34 1.61 1.02 -0.29 -4.95 119.74 122.67 1vdj s LYS 152 Ca 0.13 0.94 -0.21 0.00 0.02 0.00 0.00 55.97 56.86 1vdj s LYS 152 Cb -0.18 -3.62 0.00 0.00 -0.52 0.00 0.00 37.83 33.51 1vdj s LYS 152 CO -0.18 -0.44 0.65 0.16 -0.92 0.00 0.00 175.35 174.62 1vdj s ASP 153 N 1.27 6.46 0.72 2.83 1.47 -1.26 -2.23 116.67 125.93 1vdj s ASP 153 Ca 0.35 0.25 -0.02 0.00 1.18 0.00 0.00 52.55 54.32 1vdj s ASP 153 Cb -0.16 -2.34 0.12 0.00 -0.34 0.00 0.00 42.92 40.21 1vdj s ASP 153 CO 0.09 -0.58 1.00 -1.48 0.68 0.00 0.00 175.17 174.88 1vdj s LEU 154 N 2.72 2.97 0.00 2.11 -0.00 -1.26 -4.98 118.68 120.24 1vdj s LEU 154 Ca 0.25 -0.23 0.00 0.00 -0.00 0.00 0.00 54.13 54.15 1vdj s LEU 154 Cb -0.14 -2.16 0.00 0.00 -0.00 0.00 0.00 46.19 43.89 1vdj s LEU 154 CO 0.14 -1.85 0.58 -1.14 -0.00 0.00 0.00 176.35 174.09 1vdj n ARG 155 N -2.87 0.00 -1.55 1.48 3.00 -1.26 -3.15 116.66 112.32 1vdj n ARG 155 Ca 0.14 0.58 -0.14 0.00 -0.00 0.00 0.00 57.85 58.43 1vdj n ARG 155 Cb 0.60 -0.89 -0.09 0.00 0.00 0.00 0.00 32.46 32.08 1vdj n ARG 155 CO 0.00 0.00 0.00 -3.47 0.00 0.00 0.00 177.63 174.16 1vdj n ASP 156 N -2.47 1.28 0.01 6.15 2.03 -1.26 -4.43 116.55 117.86 1vdj n ASP 156 Ca 0.00 -1.45 0.00 0.00 0.52 0.00 0.00 54.79 53.86 1vdj n ASP 156 Cb 0.00 -1.51 0.00 0.00 -0.72 0.00 0.00 41.12 38.89 1vdj n ASP 156 CO 0.00 0.00 0.00 0.52 -1.92 0.00 0.00 177.20 175.80 1vdj n VAL 157 N 8.33 0.21 0.00 5.18 0.31 -1.19 -4.61 118.33 126.57 1vdj n VAL 157 Ca 0.49 0.07 0.00 0.00 -0.01 0.00 0.00 64.34 64.89 1vdj n VAL 157 Cb 0.40 -1.06 0.00 0.00 -0.91 0.00 0.00 33.84 32.26 1vdj n VAL 157 CO 0.00 0.00 0.00 0.61 -1.32 0.00 0.00 176.83 176.12 1vdj n GLY 158 N 3.41 1.34 0.20 2.92 0.00 -1.26 0.42 105.19 112.21 1vdj n GLY 158 Ca 0.00 0.24 -0.11 0.00 0.00 0.00 0.00 46.02 46.15 1vdj n GLY 158 CO 0.00 0.00 0.00 -1.80 0.00 0.00 0.00 173.32 171.52 1vdj h ASP 159 N 0.00 -0.34 -0.56 1.61 1.82 -1.99 -2.48 116.42 114.49 1vdj h ASP 159 Ca 0.00 -0.19 0.11 0.00 -0.39 0.00 0.00 57.03 56.56 1vdj h ASP 159 Cb 0.00 0.09 -0.11 0.00 0.68 0.00 0.00 39.33 39.99 1vdj h ASP 159 CO 0.00 0.12 -0.14 1.87 -1.61 0.00 0.00 179.24 179.48 1vdj n TRP 160 N -5.07 0.20 0.11 0.28 -0.00 0.12 0.43 117.44 113.51 1vdj n TRP 160 Ca -0.08 0.68 -0.04 0.00 -0.00 0.00 0.00 57.50 58.05 1vdj n TRP 160 Cb 0.26 -0.82 -0.02 0.00 -0.00 0.00 0.00 31.31 30.73 1vdj n TRP 160 CO 0.00 0.00 0.00 -0.09 -0.00 0.00 0.00 177.69 177.60 1vdj h ARG 161 N 0.00 -0.27 -0.38 5.87 2.43 -0.02 -2.50 114.38 119.50 1vdj h ARG 161 Ca 0.27 0.02 0.13 0.00 -0.81 0.00 0.00 59.98 59.58 1vdj h ARG 161 Cb 0.40 0.06 -0.07 0.00 -0.42 0.00 0.00 29.97 29.95 1vdj h ARG 161 CO -0.57 -0.18 0.09 1.17 -1.51 0.00 0.00 179.97 178.96 1vdj n LYS 162 N -2.93 -0.03 0.00 0.20 0.00 0.17 0.27 118.16 115.84 1vdj n LYS 162 Ca -0.04 0.55 0.00 0.00 0.00 0.00 0.00 58.31 58.83 1vdj n LYS 162 Cb 0.11 -0.92 0.00 0.00 0.00 0.00 0.00 35.03 34.22 1vdj n LYS 162 CO 0.00 0.00 0.00 0.09 0.00 0.00 0.00 177.40 177.49 1vdj n ASN 163 N -4.16 0.00 -0.00 3.14 3.02 -0.12 -1.91 115.26 115.23 1vdj n ASN 163 Ca 0.11 0.62 -0.10 0.00 -0.03 0.00 0.00 54.58 55.18 1vdj n ASN 163 Cb 0.38 -0.24 -0.04 0.00 -0.61 0.00 0.00 39.78 39.27 1vdj n ASN 163 CO 0.00 0.00 0.00 0.16 -2.62 0.00 0.00 177.26 174.80 1vdj h ILE 164 N 0.00 0.33 -0.86 2.41 -0.00 0.48 -1.10 117.51 118.77 1vdj h ILE 164 Ca 0.00 0.00 0.16 0.00 -0.00 0.00 0.00 64.86 65.02 1vdj h ILE 164 Cb 0.00 0.33 -0.16 0.00 -0.00 0.00 0.00 36.82 36.99 1vdj h ILE 164 CO 0.00 0.00 -0.25 1.21 -0.00 0.00 0.00 178.15 179.11 1vdj n GLU 165 N -5.40 -0.11 0.00 0.16 4.07 0.76 0.25 120.64 120.37 1vdj n GLU 165 Ca -0.03 1.34 0.00 0.00 -0.06 0.00 0.00 57.16 58.41 1vdj n GLU 165 Cb 0.31 -2.00 0.00 0.00 -0.06 0.00 0.00 31.44 29.70 1vdj n GLU 165 CO 0.00 0.00 0.00 0.39 -0.06 0.00 0.00 177.13 177.46 1vdj n GLU 166 N -5.37 0.00 -0.41 5.31 -0.58 -0.52 -3.90 120.64 115.18 1vdj n GLU 166 Ca 0.12 0.12 -0.09 0.00 -0.42 0.00 0.00 57.16 56.89 1vdj n GLU 166 Cb 0.41 -0.97 -0.08 0.00 -0.57 0.00 0.00 31.44 30.23 1vdj n GLU 166 CO 0.00 0.00 0.00 0.36 -0.48 0.00 0.00 177.13 177.01 1vdj n LYS 167 N -0.85 -0.40 -0.85 3.49 2.85 -0.62 -4.29 118.16 117.49 1vdj n LYS 167 Ca 0.00 1.49 -0.34 0.00 -1.05 0.00 0.00 58.31 58.41 1vdj n LYS 167 Cb 0.00 -2.19 0.10 0.00 -0.65 0.00 0.00 35.03 32.29 1vdj n LYS 167 CO 0.00 0.00 0.00 0.45 -0.05 0.00 0.00 177.40 177.80 1vdj n SER 168 N -5.26 -3.32 0.00 -5.58 2.88 0.69 -1.97 113.62 101.07 1vdj n SER 168 Ca 0.03 0.21 0.00 0.00 -1.33 0.00 0.00 58.87 57.78 1vdj n SER 168 Cb 0.28 -1.01 0.00 0.00 -0.75 0.00 0.00 64.21 62.73 1vdj n SER 168 CO 0.00 0.00 0.00 0.61 -1.23 0.00 0.00 175.04 174.42 1vdj n GLY 169 N 2.26 1.60 0.53 0.46 0.00 -1.26 -4.05 105.19 104.72 1vdj n GLY 169 Ca 0.03 0.20 0.43 0.00 0.00 0.00 0.00 46.02 46.68 1vdj n GLY 169 CO 0.00 0.00 0.00 0.00 0.00 0.00 0.00 173.32 173.32 1vdj h MET 170 N 0.00 0.01 0.01 1.61 -0.00 -1.75 0.24 114.93 115.05 1vdj h MET 170 Ca 0.00 -0.00 0.02 0.00 -0.00 0.00 0.00 59.70 59.72 1vdj h MET 170 Cb 0.00 -0.00 -0.05 0.00 -0.00 0.00 0.00 31.60 31.55 1vdj h MET 170 CO 0.00 0.01 -0.47 1.49 -0.00 0.00 0.00 176.91 177.94 1vdj h GLU 171 N 0.01 -0.57 -0.37 -0.10 4.22 -1.54 -1.28 114.58 114.96 1vdj h GLU 171 Ca 0.89 0.04 -0.07 0.00 0.08 0.00 0.00 59.36 60.30 1vdj h GLU 171 Cb 3.04 0.13 -0.01 0.00 0.50 0.00 0.00 28.75 32.40 1vdj h GLU 171 CO -0.35 -0.38 -0.04 0.78 -2.18 0.00 0.00 179.01 176.84 1vdj h GLY 172 N -0.59 0.73 -0.98 1.92 0.00 -0.89 -1.04 103.07 102.23 1vdj h GLY 172 Ca 0.01 -0.57 0.16 0.00 0.00 0.00 0.00 47.33 46.93 1vdj h GLY 172 CO -0.31 0.52 -0.36 -0.09 0.00 0.00 0.00 176.54 176.30 1vdj h ARG 173 N 0.49 -0.01 -0.03 4.80 1.12 -0.83 0.21 114.38 120.14 1vdj h ARG 173 Ca 0.10 0.00 -0.04 0.00 -1.11 0.00 0.00 59.98 58.93 1vdj h ARG 173 Cb 0.52 0.00 0.00 0.00 -0.01 0.00 0.00 29.97 30.48 1vdj h ARG 173 CO 0.03 -0.00 -0.15 0.87 -3.11 0.00 0.00 179.97 177.60 1vdj h LYS 174 N -0.01 0.15 -1.69 0.20 1.57 -1.20 0.66 116.57 116.26 1vdj h LYS 174 Ca 0.37 -0.13 0.49 0.00 -1.87 0.00 0.00 60.65 59.51 1vdj h LYS 174 Cb 0.62 0.03 -0.07 0.00 0.08 0.00 0.00 32.23 32.89 1vdj h LYS 174 CO -0.99 0.79 1.35 -0.22 -0.57 0.00 0.00 179.45 179.81 1vdj h LYS 175 N -0.45 0.00 0.00 3.15 3.11 0.58 -0.86 116.57 122.10 1vdj h LYS 175 Ca -0.01 0.00 0.00 0.00 -2.81 0.00 0.00 60.65 57.83 1vdj h LYS 175 Cb 0.83 0.00 0.00 0.00 -1.00 0.00 0.00 32.23 32.06 1vdj h LYS 175 CO 0.03 0.00 -0.64 -0.12 -2.81 0.00 0.00 179.45 175.91 1vdj n MET 176 N -3.75 0.35 -0.16 1.90 1.56 0.47 -4.53 117.12 112.97 1vdj n MET 176 Ca 0.38 0.18 0.06 0.00 -0.27 0.00 0.00 57.70 58.04 1vdj n MET 176 Cb 1.85 -1.16 0.11 0.00 2.15 0.00 0.00 33.22 36.17 1vdj n MET 176 CO 0.00 0.00 0.00 0.34 -0.73 0.00 0.00 175.97 175.58 1vdj n PHE 177 N -3.84 0.25 0.00 1.12 -0.00 0.21 -4.45 117.46 110.76 1vdj n PHE 177 Ca -0.09 0.56 0.00 0.00 -0.00 0.00 0.00 57.45 57.92 1vdj n PHE 177 Cb 0.33 -0.82 0.00 0.00 -0.00 0.00 0.00 39.48 38.99 1vdj n PHE 177 CO 0.00 0.00 0.00 0.39 -0.00 0.00 0.00 176.76 177.15 1vdj n GLU 178 N -4.59 0.00 -2.44 -4.13 1.02 -0.42 -4.40 120.64 105.68 1vdj n GLU 178 Ca 0.10 0.00 -0.34 0.00 -0.02 0.00 0.00 57.16 56.89 1vdj n GLU 178 Cb 0.32 0.00 -0.02 0.00 -0.02 0.00 0.00 31.44 31.71 1vdj n GLU 178 CO 0.00 0.00 0.00 0.00 1.18 0.00 0.00 177.13 178.31 1vdj s ALA 179 N -1.00 2.81 0.00 0.62 0.00 -1.26 -5.03 121.76 117.89 1vdj s ALA 179 Ca 0.00 0.69 0.00 0.00 0.00 0.00 0.00 51.96 52.65 1vdj s ALA 179 Cb 0.00 -3.29 0.00 0.00 0.00 0.00 0.00 23.12 19.83 1vdj s ALA 179 CO 0.00 -0.48 0.00 0.41 0.00 0.00 0.00 175.76 175.69 1vdj n GLY 180 N -0.09 1.11 3.73 0.00 0.00 -1.26 -5.15 105.19 103.52 1vdj n GLY 180 Ca 0.10 0.54 -0.34 0.00 0.00 0.00 0.00 46.02 46.32 1vdj n GLY 180 CO 0.00 0.00 0.00 -1.83 0.00 0.00 0.00 173.32 171.49 1vdj s GLU 181 N 0.00 2.34 0.00 1.61 1.03 -1.26 -5.26 118.70 117.16 1vdj s GLU 181 Ca 0.00 1.72 0.25 0.00 0.03 0.00 0.00 54.97 56.97 1vdj s GLU 181 Cb 0.00 -1.86 0.43 0.00 -0.80 0.00 0.00 34.13 31.90 1vdj s GLU 181 CO 0.00 -1.67 1.39 -1.13 -1.33 0.00 0.00 175.26 172.52