HEADSC 2ajs SEQCRD L D ASP ASP 1 1 C C 0 SEQCRD L I ILE ILE 2 2 C C 0 SEQCRD L V VAL VAL 3 3 C C 0 SEQCRD L I ILE ILE 4 4 E E 0 SEQCRD L T THR THR 5 5 E E 0 SEQCRD L Q GLN GLN 6 6 E E 0 SEQCRD L D ASP ASP 7 7 C C 0 SEQCRD L E GLU GLU 8 8 C C 0 SEQCRD L L LEU LEU 9 9 C C 0 SEQCRD L S SER SER 10 10 C C 0 SEQCRD L N ASN ASN 11 11 C C 0 SEQCRD L P PRO PRO 12 12 C C 0 SEQCRD L V VAL VAL 13 13 E E 0 SEQCRD L T THR THR 14 14 E E 0 SEQCRD L S SER SER 15 15 C C 0 SEQCRD L G GLY GLY 16 16 C C 0 SEQCRD L E GLU GLU 17 17 C C 0 SEQCRD L S SER SER 18 18 C C 0 SEQCRD L V VAL VAL 19 19 E E 0 SEQCRD L S SER SER 20 20 E E 0 SEQCRD L I ILE ILE 21 21 E E 0 SEQCRD L S SER SER 22 22 E E 0 SEQCRD L C CYS CYS 23 23 E E 0 SEQCRD L R ARG ARG 24 24 E E 0 SEQCRD L S SER SER 25 25 E E 0 SEQCRD L S SER SER 26 26 C C 0 SEQCRD L R ARG ARG 27 27 C C 0 SEQCRD L S SER SER 28 27A C C 0 SEQCRD L L LEU LEU 29 27B C C 0 SEQCRD L L LEU LEU 30 27C C C 0 SEQCRD L Y TYR TYR 31 27D C C 0 SEQCRD L K LYS LYS 32 27E C C 0 SEQCRD L D ASP ASP 33 28 C C 0 SEQCRD L G GLY GLY 34 29 C C 0 SEQCRD L R ARG ARG 35 30 C C 0 SEQCRD L T THR THR 36 31 C C 0 SEQCRD L Y TYR TYR 37 32 C C 0 SEQCRD L L LEU LEU 38 33 E E 0 SEQCRD L N ASN ASN 39 34 E E 0 SEQCRD L W TRP TRP 40 35 E E 0 SEQCRD L F PHE PHE 41 36 E E 0 SEQCRD L L LEU LEU 42 37 E E 0 SEQCRD L Q GLN GLN 43 38 E E 0 SEQCRD L R ARG ARG 44 39 C C 0 SEQCRD L P PRO PRO 45 40 C C 0 SEQCRD L G GLY GLY 46 41 C C 0 SEQCRD L Q GLN GLN 47 42 C C 0 SEQCRD L S SER SER 48 43 C C 0 SEQCRD L P PRO PRO 49 44 C C 0 SEQCRD L Q GLN GLN 50 45 E E 0 SEQCRD L L LEU LEU 51 46 E E 0 SEQCRD L L LEU LEU 52 47 E E 0 SEQCRD L I ILE ILE 53 48 E E 0 SEQCRD L Y TYR TYR 54 49 E E 0 SEQCRD L L LEU LEU 55 50 C C 0 SEQCRD L M MET MET 56 51 C C 0 SEQCRD L S SER SER 57 52 C C 0 SEQCRD L T THR THR 58 53 E E 0 SEQCRD L R ARG ARG 59 54 E E 0 SEQCRD L A ALA ALA 60 55 C C 0 SEQCRD L S SER SER 61 56 C C 0 SEQCRD L G GLY GLY 62 57 C C 0 SEQCRD L V VAL VAL 63 58 C C 0 SEQCRD L S SER SER 64 59 C C 0 SEQCRD L D ASP ASP 65 60 C C 0 SEQCRD L R ARG ARG 66 61 C C 0 SEQCRD L F PHE PHE 67 62 E E 0 SEQCRD L S SER SER 68 63 E E 0 SEQCRD L G GLY GLY 69 64 E E 0 SEQCRD L S SER SER 70 65 E E 0 SEQCRD L G GLY GLY 71 66 E E 0 SEQCRD L S SER SER 72 67 C C 0 SEQCRD L G GLY GLY 73 68 C C 0 SEQCRD L T THR THR 74 69 C C 0 SEQCRD L D ASP ASP 75 70 E E 0 SEQCRD L F PHE PHE 76 71 E E 0 SEQCRD L T THR THR 77 72 E E 0 SEQCRD L L LEU LEU 78 73 E E 0 SEQCRD L E GLU GLU 79 74 E E 0 SEQCRD L I ILE ILE 80 75 E E 0 SEQCRD L S SER SER 81 76 C C 0 SEQCRD L R ARG ARG 82 77 C C 0 SEQCRD L V VAL VAL 83 78 C C 0 SEQCRD L K LYS LYS 84 79 H H 0 SEQCRD L A ALA ALA 85 80 H H 0 SEQCRD L E GLU GLU 86 81 H H 0 SEQCRD L D ASP ASP 87 82 H H 0 SEQCRD L V VAL VAL 88 83 H H 0 SEQCRD L G GLY GLY 89 84 E E 0 SEQCRD L V VAL VAL 90 85 E E 0 SEQCRD L Y TYR TYR 91 86 E E 0 SEQCRD L Y TYR TYR 92 87 E E 0 SEQCRD L C CYS CYS 93 88 E E 0 SEQCRD L Q GLN GLN 94 89 E E 0 SEQCRD L Q GLN GLN 95 90 E E 0 SEQCRD L F PHE PHE 96 91 C C 0 SEQCRD L V VAL VAL 97 92 C C 0 SEQCRD L E GLU GLU 98 93 C C 0 SEQCRD L Y TYR TYR 99 94 C C 0 SEQCRD L P PRO PRO 100 95 C C 0 SEQCRD L F PHE PHE 101 96 C C 0 SEQCRD L T THR THR 102 97 C C 0 SEQCRD L F PHE PHE 103 98 C C 0 SEQCRD L G GLY GLY 104 99 C C 0 SEQCRD L S SER SER 105 100 C C 0 SEQCRD L G GLY GLY 106 101 C C 0 SEQCRD L T THR THR 107 102 E E 0 SEQCRD L K LYS LYS 108 103 E E 0 SEQCRD L L LEU LEU 109 104 E E 0 SEQCRD L E GLU GLU 110 105 C C 0 SEQCRD L I ILE ILE 111 106 E E 0 SEQCRD L K LYS LYS 112 107 E E 0 SEQCRD L R ARG ARG 113 108 C C 0 SEQCRD L A ALA ALA 114 109 C C 0 SEQCRD L D ASP ASP 115 110 C C 0 SEQCRD L A ALA ALA 116 111 C C 0 SEQCRD L A ALA ALA 117 112 C C 0 SEQCRD L P PRO PRO 118 113 C C 0 SEQCRD L T THR THR 119 114 E E 0 SEQCRD L V VAL VAL 120 115 E E 0 SEQCRD L S SER SER 121 116 E E 0 SEQCRD L I ILE ILE 122 117 E E 0 SEQCRD L F PHE PHE 123 118 E E 0 SEQCRD L P PRO PRO 124 119 C C 0 SEQCRD L P PRO PRO 125 120 C C 0 SEQCRD L S SER SER 126 121 H H 0 SEQCRD L S SER SER 127 122 H H 0 SEQCRD L E GLU GLU 128 123 H H 0 SEQCRD L Q GLN GLN 129 124 H H 0 SEQCRD L L LEU LEU 130 125 H H 0 SEQCRD L T THR THR 131 126 H H 0 SEQCRD L S SER SER 132 127 H H 0 SEQCRD L G GLY GLY 133 128 H H 0 SEQCRD L G GLY GLY 134 129 E E 0 SEQCRD L A ALA ALA 135 130 E E 0 SEQCRD L S SER SER 136 131 E E 0 SEQCRD L V VAL VAL 137 132 E E 0 SEQCRD L V VAL VAL 138 133 E E 0 SEQCRD L C CYS CYS 139 134 E E 0 SEQCRD L F PHE PHE 140 135 E E 0 SEQCRD L L LEU LEU 141 136 E E 0 SEQCRD L N ASN ASN 142 137 E E 0 SEQCRD L N ASN ASN 143 138 E E 0 SEQCRD L F PHE PHE 144 139 E E 0 SEQCRD L Y TYR TYR 145 140 C C 0 SEQCRD L P PRO PRO 146 141 C C 0 SEQCRD L K LYS LYS 147 142 C C 0 SEQCRD L D ASP ASP 148 143 C C 0 SEQCRD L I ILE ILE 149 144 C C 0 SEQCRD L N ASN ASN 150 145 E E 0 SEQCRD L V VAL VAL 151 146 E E 0 SEQCRD L K LYS LYS 152 147 E E 0 SEQCRD L W TRP TRP 153 148 E E 0 SEQCRD L K LYS LYS 154 149 E E 0 SEQCRD L I ILE ILE 155 150 E E 0 SEQCRD L D ASP ASP 156 151 C C 0 SEQCRD L G GLY GLY 157 152 C C 0 SEQCRD L S SER SER 158 153 E E 0 SEQCRD L E GLU GLU 159 154 E E 0 SEQCRD L R ARG ARG 160 155 E E 0 SEQCRD L Q GLN GLN 161 156 C C 0 SEQCRD L N ASN ASN 162 157 C C 0 SEQCRD L G GLY GLY 163 158 C C 0 SEQCRD L V VAL VAL 164 159 E E 0 SEQCRD L L LEU LEU 165 160 E E 0 SEQCRD L N ASN ASN 166 161 E E 0 SEQCRD L S SER SER 167 162 E E 0 SEQCRD L W TRP TRP 168 163 E E 0 SEQCRD L T THR THR 169 164 C C 0 SEQCRD L D ASP ASP 170 165 C C 0 SEQCRD L Q GLN GLN 171 166 C C 0 SEQCRD L D ASP ASP 172 167 C C 0 SEQCRD L S SER SER 173 168 C C 0 SEQCRD L K LYS LYS 174 169 C C 0 SEQCRD L D ASP ASP 175 170 C C 0 SEQCRD L S SER SER 176 171 C C 0 SEQCRD L T THR THR 177 172 C C 0 SEQCRD L Y TYR TYR 178 173 E E 0 SEQCRD L S SER SER 179 174 E E 0 SEQCRD L M MET MET 180 175 E E 0 SEQCRD L S SER SER 181 176 E E 0 SEQCRD L S SER SER 182 177 E E 0 SEQCRD L T THR THR 183 178 E E 0 SEQCRD L L LEU LEU 184 179 E E 0 SEQCRD L T THR THR 185 180 E E 0 SEQCRD L L LEU LEU 186 181 E E 0 SEQCRD L T THR THR 187 182 E E 0 SEQCRD L K LYS LYS 188 183 H H 0 SEQCRD L D ASP ASP 189 184 H H 0 SEQCRD L E GLU GLU 190 185 H H 0 SEQCRD L Y TYR TYR 191 186 H H 0 SEQCRD L E GLU GLU 192 187 H H 0 SEQCRD L R ARG ARG 193 188 H H 0 SEQCRD L H HIS HIS 194 189 C C 0 SEQCRD L N ASN ASN 195 190 C C 0 SEQCRD L S SER SER 196 191 E E 0 SEQCRD L Y TYR TYR 197 192 E E 0 SEQCRD L T THR THR 198 193 E E 0 SEQCRD L C CYS CYS 199 194 E E 0 SEQCRD L E GLU GLU 200 195 E E 0 SEQCRD L A ALA ALA 201 196 E E 0 SEQCRD L T THR THR 202 197 E E 0 SEQCRD L H HIS HIS 203 198 C C 0 SEQCRD L K LYS LYS 204 199 C C 0 SEQCRD L T THR THR 205 200 C C 0 SEQCRD L S SER SER 206 201 C C 0 SEQCRD L T THR THR 207 202 C C 0 SEQCRD L S SER SER 208 203 C C 0 SEQCRD L P PRO PRO 209 204 C C 0 SEQCRD L I ILE ILE 210 205 E E 0 SEQCRD L V VAL VAL 211 206 E E 0 SEQCRD L K LYS LYS 212 207 E E 0 SEQCRD L S SER SER 213 208 E E 0 SEQCRD L F PHE PHE 214 209 E E 0 SEQCRD L N ASN ASN 215 210 E E 0 SEQCRD L R ARG ARG 216 211 C C 0 SEQCRD H E GLU GLU 1 1 C C 0 SEQCRD H V VAL VAL 2 2 C C 0 SEQCRD H K LYS LYS 3 3 E E 0 SEQCRD H L LEU LEU 4 4 E E 0 SEQCRD H S SER SER 5 5 E E 0 SEQCRD H E GLU GLU 6 6 E E 0 SEQCRD H S SER SER 7 7 E E 0 SEQCRD H G GLY GLY 8 8 C C 0 SEQCRD H P PRO PRO 9 9 C C 0 SEQCRD H G GLY GLY 10 10 C C 0 SEQCRD H L LEU LEU 11 11 E E 0 SEQCRD H V VAL VAL 12 12 E E 0 SEQCRD H K LYS LYS 13 13 C C 0 SEQCRD H P PRO PRO 14 14 C C 0 SEQCRD H S SER SER 15 15 C C 0 SEQCRD H Q GLN GLN 16 16 C C 0 SEQCRD H S SER SER 17 17 C C 0 SEQCRD H L LEU LEU 18 18 E E 0 SEQCRD H S SER SER 19 19 E E 0 SEQCRD H L LEU LEU 20 20 E E 0 SEQCRD H T THR THR 21 21 E E 0 SEQCRD H C CYS CYS 22 22 E E 0 SEQCRD H T THR THR 23 23 E E 0 SEQCRD H V VAL VAL 24 24 E E 0 SEQCRD H T THR THR 25 25 E E 0 SEQCRD H G GLY GLY 26 26 C C 0 SEQCRD H Y TYR TYR 27 27 C C 0 SEQCRD H S SER SER 28 28 C C 0 SEQCRD H I ILE ILE 29 29 C C 0 SEQCRD H T THR THR 30 30 C C 0 SEQCRD H T THR THR 31 31 C C 0 SEQCRD H N ASN ASN 32 32 C C 0 SEQCRD H Y TYR TYR 33 33 C C 0 SEQCRD H A ALA ALA 34 34 E E 0 SEQCRD H W TRP TRP 35 35 E E 0 SEQCRD H T THR THR 36 35A E E 0 SEQCRD H W TRP TRP 37 36 E E 0 SEQCRD H I ILE ILE 38 37 E E 0 SEQCRD H R ARG ARG 39 38 E E 0 SEQCRD H Q GLN GLN 40 39 E E 0 SEQCRD H F PHE PHE 41 40 C C 0 SEQCRD H P PRO PRO 42 41 C C 0 SEQCRD H G GLY GLY 43 42 C C 0 SEQCRD H N ASN ASN 44 43 C C 0 SEQCRD H K LYS LYS 45 44 C C 0 SEQCRD H L LEU LEU 46 45 E E 0 SEQCRD H E GLU GLU 47 46 E E 0 SEQCRD H W TRP TRP 48 47 E E 0 SEQCRD H M MET MET 49 48 E E 0 SEQCRD H G GLY GLY 50 49 E E 0 SEQCRD H Y TYR TYR 51 50 E E 0 SEQCRD H I ILE ILE 52 51 E E 0 SEQCRD H R ARG ARG 53 52 E E 0 SEQCRD H S SER SER 54 53 C C 0 SEQCRD H S SER SER 55 54 C C 0 SEQCRD H V VAL VAL 56 55 C C 0 SEQCRD H I ILE ILE 57 56 E E 0 SEQCRD H T THR THR 58 57 E E 0 SEQCRD H R ARG ARG 59 58 E E 0 SEQCRD H Y TYR TYR 60 59 E E 0 SEQCRD H N ASN ASN 61 60 C C 0 SEQCRD H P PRO PRO 62 61 H H 0 SEQCRD H S SER SER 63 62 H H 0 SEQCRD H L LEU LEU 64 63 H H 0 SEQCRD H K LYS LYS 65 64 H H 0 SEQCRD H S SER SER 66 65 C C 0 SEQCRD H R ARG ARG 67 66 C C 0 SEQCRD H I ILE ILE 68 67 E E 0 SEQCRD H S SER SER 69 68 E E 0 SEQCRD H I ILE ILE 70 69 E E 0 SEQCRD H T THR THR 71 70 E E 0 SEQCRD H Q GLN GLN 72 71 E E 0 SEQCRD H D ASP ASP 73 72 E E 0 SEQCRD H T THR THR 74 73 C C 0 SEQCRD H S SER SER 75 74 C C 0 SEQCRD H K LYS LYS 76 75 C C 0 SEQCRD H N ASN ASN 77 76 C C 0 SEQCRD H Q GLN GLN 78 77 E E 0 SEQCRD H F PHE PHE 79 78 E E 0 SEQCRD H F PHE PHE 80 79 E E 0 SEQCRD H L LEU LEU 81 80 E E 0 SEQCRD H Q GLN GLN 82 81 E E 0 SEQCRD H L LEU LEU 83 82 E E 0 SEQCRD H N ASN ASN 84 82A C C 0 SEQCRD H S SER SER 85 82B C C 0 SEQCRD H V VAL VAL 86 82C C C 0 SEQCRD H T THR THR 87 83 H H 0 SEQCRD H T THR THR 88 84 H H 0 SEQCRD H E GLU GLU 89 85 H H 0 SEQCRD H D ASP ASP 90 86 H H 0 SEQCRD H T THR THR 91 87 H H 0 SEQCRD H A ALA ALA 92 88 E E 0 SEQCRD H T THR THR 93 89 E E 0 SEQCRD H Y TYR TYR 94 90 E E 0 SEQCRD H Y TYR TYR 95 91 E E 0 SEQCRD H C CYS CYS 96 92 E E 0 SEQCRD H A ALA ALA 97 93 E E 0 SEQCRD H R ARG ARG 98 94 E E 0 SEQCRD H Y TYR TYR 99 95 E E 0 SEQCRD H D ASP ASP 100 96 C C 0 SEQCRD H Y TYR TYR 101 97 C C 0 SEQCRD H Y TYR TYR 102 98 C C 0 SEQCRD H G GLY GLY 103 99 C C 0 SEQCRD H N ASN ASN 104 100 C C 0 SEQCRD H T THR THR 105 100A C C 0 SEQCRD H G GLY GLY 106 100B C C 0 SEQCRD H D ASP ASP 107 101 C C 0 SEQCRD H Y TYR TYR 108 102 C C 0 SEQCRD H W TRP TRP 109 103 C C 0 SEQCRD H G GLY GLY 110 104 C C 0 SEQCRD H Q GLN GLN 111 105 C C 0 SEQCRD H G GLY GLY 112 106 C C 0 SEQCRD H T THR THR 113 107 E E 0 SEQCRD H S SER SER 114 108 E E 0 SEQCRD H V VAL VAL 115 109 E E 0 SEQCRD H T THR THR 116 110 E E 0 SEQCRD H V VAL VAL 117 111 E E 0 SEQCRD H S SER SER 118 112 C C 0 SEQCRD H S SER SER 119 113 C C 0 SEQCRD H A ALA ALA 120 114 C C 0 SEQCRD H K LYS LYS 121 115 C C 0 SEQCRD H T THR THR 122 116 C C 0 SEQCRD H T THR THR 123 117 C C 0 SEQCRD H P PRO PRO 124 118 C C 0 SEQCRD H P PRO PRO 125 119 C C 0 SEQCRD H S SER SER 126 120 E E 0 SEQCRD H V VAL VAL 127 121 E E 0 SEQCRD H Y TYR TYR 128 122 E E 0 SEQCRD H P PRO PRO 129 123 E E 0 SEQCRD H L LEU LEU 130 124 E E 0 SEQCRD H A ALA ALA 131 125 C C 0 SEQCRD H P PRO PRO 132 126 C C 0 SEQCRD H G GLY GLY 133 127 C C 0 SEQCRD H T THR THR 134 128 C C 0 SEQCRD H A ALA ALA 135 129 C C 0 SEQCRD H A ALA ALA 136 130 C C 0 SEQCRD H L LEU LEU 137 133 C C 0 SEQCRD H K LYS LYS 138 134 C C 0 SEQCRD H S SER SER 139 135 C C 0 SEQCRD H S SER SER 140 136 C C 0 SEQCRD H M MET MET 141 137 E E 0 SEQCRD H V VAL VAL 142 138 E E 0 SEQCRD H T THR THR 143 139 E E 0 SEQCRD H L LEU LEU 144 140 E E 0 SEQCRD H G GLY GLY 145 141 E E 0 SEQCRD H C CYS CYS 146 142 E E 0 SEQCRD H L LEU LEU 147 143 E E 0 SEQCRD H V VAL VAL 148 144 E E 0 SEQCRD H K LYS LYS 149 145 E E 0 SEQCRD H G GLY GLY 150 146 E E 0 SEQCRD H Y TYR TYR 151 147 E E 0 SEQCRD H F PHE PHE 152 148 C C 0 SEQCRD H P PRO PRO 153 149 C C 0 SEQCRD H E GLU GLU 154 150 C C 0 SEQCRD H P PRO PRO 155 151 C C 0 SEQCRD H V VAL VAL 156 152 C C 0 SEQCRD H T THR THR 157 153 E E 0 SEQCRD H V VAL VAL 158 154 E E 0 SEQCRD H T THR THR 159 156 E E 0 SEQCRD H W TRP TRP 160 157 E E 0 SEQCRD H N ASN ASN 161 162 C C 0 SEQCRD H S SER SER 162 163 H H 0 SEQCRD H G GLY GLY 163 164 H H 0 SEQCRD H S SER SER 164 165 H H 0 SEQCRD H L LEU LEU 165 166 C C 0 SEQCRD H S SER SER 166 167 C C 0 SEQCRD H S SER SER 167 168 C C 0 SEQCRD H G GLY GLY 168 169 C C 0 SEQCRD H V VAL VAL 169 171 E E 0 SEQCRD H H HIS HIS 170 172 E E 0 SEQCRD H T THR THR 171 173 E E 0 SEQCRD H F PHE PHE 172 174 C C 0 SEQCRD H P PRO PRO 173 175 C C 0 SEQCRD H A ALA ALA 174 176 C C 0 SEQCRD H V VAL VAL 175 177 E E 0 SEQCRD H L LEU LEU 176 178 E E 0 SEQCRD H Q GLN GLN 177 179 E E 0 SEQCRD H S SER SER 178 180 C C 0 SEQCRD H D ASP ASP 179 183 C C 0 SEQCRD H L LEU LEU 180 184 E E 0 SEQCRD H Y TYR TYR 181 185 E E 0 SEQCRD H T THR THR 182 186 E E 0 SEQCRD H L LEU LEU 183 187 E E 0 SEQCRD H T THR THR 184 188 E E 0 SEQCRD H S SER SER 185 189 E E 0 SEQCRD H S SER SER 186 190 E E 0 SEQCRD H V VAL VAL 187 191 E E 0 SEQCRD H T THR THR 188 192 E E 0 SEQCRD H V VAL VAL 189 193 E E 0 SEQCRD H P PRO PRO 190 194 E E 0 SEQCRD H S SER SER 191 195 C C 0 SEQCRD H S SER SER 192 196 C C 0 SEQCRD H T THR THR 193 199 C C 0 SEQCRD H W TRP TRP 194 200 C C 0 SEQCRD H P PRO PRO 195 202 C C 0 SEQCRD H S SER SER 196 203 C C 0 SEQCRD H Q GLN GLN 197 204 C C 0 SEQCRD H T THR THR 198 205 C C 0 SEQCRD H V VAL VAL 199 206 C C 0 SEQCRD H T THR THR 200 207 E E 0 SEQCRD H C CYS CYS 201 208 E E 0 SEQCRD H N ASN ASN 202 209 E E 0 SEQCRD H V VAL VAL 203 210 E E 0 SEQCRD H A ALA ALA 204 211 E E 0 SEQCRD H H HIS HIS 205 212 E E 0 SEQCRD H P PRO PRO 206 213 H H 0 SEQCRD H A ALA ALA 207 214 H H 0 SEQCRD H S SER SER 208 215 H H 0 SEQCRD H S SER SER 209 216 H H 0 SEQCRD H T THR THR 210 217 E E 0 SEQCRD H K LYS LYS 211 218 E E 0 SEQCRD H V VAL VAL 212 219 E E 0 SEQCRD H D ASP ASP 213 220 E E 0 SEQCRD H K LYS LYS 214 221 E E 0 SEQCRD H K LYS LYS 215 222 E E 0 SEQCRD H I ILE ILE 216 223 C C 0 SEQCRD H V VAL VAL 217 226 C C 0 SEQCRD H P PRO PRO 218 227 C C 0 SEQCRD H R ARG ARG 219 228 C C 0 PARAME method XRAY PARAME resolution 1.700 PARAME R-factor 0.21 PARAME FreeR-factor 0.233