HEADSC 5obf SEQCRD H E GLU --- 1 - - - 0 SEQCRD H V VAL VAL 2 2 C C 0 SEQCRD H Q GLN GLN 3 3 E E 0 SEQCRD H L LEU LEU 4 4 E E 0 SEQCRD H Q GLN GLN 5 5 E E 0 SEQCRD H Q GLN GLN 6 6 C C 0 SEQCRD H S SER SER 7 7 C C 0 SEQCRD H G GLY GLY 8 8 C C 0 SEQCRD H A ALA ALA 9 9 E E 0 SEQCRD H E GLU GLU 10 10 E E 0 SEQCRD H L LEU LEU 11 11 E E 0 SEQCRD H V VAL VAL 12 12 E E 0 SEQCRD H E GLU GLU 13 13 C C 0 SEQCRD H P PRO PRO 14 14 C C 0 SEQCRD H G GLY GLY 15 15 C C 0 SEQCRD H A ALA ALA 16 16 C C 0 SEQCRD H S SER SER 17 17 C C 0 SEQCRD H V VAL VAL 18 18 E E 0 SEQCRD H K LYS LYS 19 19 E E 0 SEQCRD H L LEU LEU 20 20 E E 0 SEQCRD H S SER SER 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 G GLY GLY 24 24 E E 0 SEQCRD H S SER SER 25 25 E E 0 SEQCRD H G GLY GLY 26 26 C C 0 SEQCRD H F PHE PHE 27 27 C C 0 SEQCRD H N ASN ASN 28 28 C C 0 SEQCRD H I ILE ILE 29 29 C C 0 SEQCRD H K LYS LYS 30 30 C C 0 SEQCRD H V VAL VAL 31 31 C C 0 SEQCRD H Y TYR TYR 32 32 C C 0 SEQCRD H Y TYR TYR 33 33 C C 0 SEQCRD H V VAL VAL 34 34 E E 0 SEQCRD H H HIS HIS 35 35 E E 0 SEQCRD H W TRP TRP 36 36 E E 0 SEQCRD H L LEU LEU 37 37 E E 0 SEQCRD H K LYS LYS 38 38 E E 0 SEQCRD H Q GLN GLN 39 39 E E 0 SEQCRD H L LEU LEU 40 40 C C 0 SEQCRD H T THR THR 41 41 C C 0 SEQCRD H E GLU GLU 42 42 C C 0 SEQCRD H Q GLN GLN 43 43 C C 0 SEQCRD H G GLY GLY 44 44 C C 0 SEQCRD H L LEU LEU 45 45 C C 0 SEQCRD H E GLU GLU 46 46 E E 0 SEQCRD H W TRP TRP 47 47 E E 0 SEQCRD H I ILE ILE 48 48 E E 0 SEQCRD H G GLY GLY 49 49 E E 0 SEQCRD H R ARG ARG 50 50 E E 0 SEQCRD H I ILE ILE 51 51 E E 0 SEQCRD H D ASP ASP 52 52 C C 0 SEQCRD H P PRO PRO 53 53 C C 0 SEQCRD H E GLU GLU 54 54 C C 0 SEQCRD H N ASN ASN 55 55 C C 0 SEQCRD H G GLY GLY 56 56 C C 0 SEQCRD H E GLU GLU 57 57 C C 0 SEQCRD H T THR THR 58 58 E E 0 SEQCRD H I ILE ILE 59 59 E E 0 SEQCRD H Y TYR TYR 60 60 E E 0 SEQCRD H T THR THR 61 61 C C 0 SEQCRD H P PRO PRO 62 62 H H 0 SEQCRD H K LYS LYS 63 63 H H 0 SEQCRD H F PHE PHE 64 64 H H 0 SEQCRD H Q GLN GLN 65 65 H H 0 SEQCRD H D ASP ASP 66 66 C C 0 SEQCRD H K LYS LYS 67 67 C C 0 SEQCRD H A ALA ALA 68 68 E E 0 SEQCRD H T THR THR 69 69 E E 0 SEQCRD H L LEU LEU 70 70 E E 0 SEQCRD H T THR THR 71 71 E E 0 SEQCRD H V VAL VAL 72 72 E E 0 SEQCRD H D ASP ASP 73 73 E E 0 SEQCRD H T THR THR 74 74 C C 0 SEQCRD H S SER SER 75 75 C C 0 SEQCRD H S SER SER 76 76 C C 0 SEQCRD H N ASN ASN 77 77 C C 0 SEQCRD H T THR THR 78 78 E E 0 SEQCRD H A ALA ALA 79 79 E E 0 SEQCRD H Y TYR TYR 80 80 E E 0 SEQCRD H L LEU LEU 81 81 E E 0 SEQCRD H Q GLN GLN 82 82 E E 0 SEQCRD H L LEU LEU 83 83 E E 0 SEQCRD H S SER SER 84 84 C C 0 SEQCRD H S SER SER 85 85 C C 0 SEQCRD H L LEU LEU 86 86 C C 0 SEQCRD H T THR THR 87 87 H H 0 SEQCRD H S SER SER 88 88 H H 0 SEQCRD H E GLU GLU 89 89 H H 0 SEQCRD H D ASP ASP 90 90 H H 0 SEQCRD H A ALA ALA 91 91 H H 0 SEQCRD H A ALA ALA 92 92 E E 0 SEQCRD H V VAL VAL 93 93 E E 0 SEQCRD H Y TYR TYR 94 94 E E 0 SEQCRD H Y TYR TYR 95 95 E E 0 SEQCRD H C CYS CYS 96 96 E E 0 SEQCRD H V VAL VAL 97 97 E E 0 SEQCRD H S SER SER 98 98 E E 0 SEQCRD H S SER SER 99 99 C C 0 SEQCRD H G GLY GLY 100 100 C C 0 SEQCRD H Y TYR TYR 101 101 E E 0 SEQCRD H W TRP TRP 102 102 E E 0 SEQCRD H G GLY GLY 103 103 C C 0 SEQCRD H Q GLN GLN 104 104 C C 0 SEQCRD H G GLY GLY 105 105 C C 0 SEQCRD H T THR THR 106 106 E E 0 SEQCRD H T THR THR 107 107 E E 0 SEQCRD H L LEU LEU 108 108 E E 0 SEQCRD H T THR THR 109 109 E E 0 SEQCRD H V VAL VAL 110 110 E E 0 SEQCRD H S SER SER 111 111 C C 0 SEQCRD H S SER SER 112 112 C C 0 SEQCRD H A ALA ALA 113 113 C C 0 SEQCRD H K LYS LYS 114 114 C C 0 SEQCRD H T THR THR 115 115 C C 0 SEQCRD H T THR THR 116 116 C C 0 SEQCRD H A ALA ALA 117 117 C C 0 SEQCRD H P PRO PRO 118 118 C C 0 SEQCRD H S SER SER 119 119 E E 0 SEQCRD H V VAL VAL 120 120 E E 0 SEQCRD H Y TYR TYR 121 121 E E 0 SEQCRD H P PRO PRO 122 122 E E 0 SEQCRD H L LEU LEU 123 123 E E 0 SEQCRD H A ALA ALA 124 124 C C 0 SEQCRD H P PRO PRO 125 125 C C 0 SEQCRD H V VAL VAL 126 126 C C 0 SEQCRD H C CYS CYS 127 127 C C 0 SEQCRD H G GLY --- 128 - - - 0 SEQCRD H D ASP --- 129 - - - 0 SEQCRD H T THR --- 130 - - - 0 SEQCRD H T THR --- 131 - - - 0 SEQCRD H G GLY GLY 132 132 C C 0 SEQCRD H S SER SER 133 133 C C 0 SEQCRD H S SER SER 134 134 E E 0 SEQCRD H V VAL VAL 135 135 E E 0 SEQCRD H T THR THR 136 136 E E 0 SEQCRD H L LEU LEU 137 137 E E 0 SEQCRD H G GLY GLY 138 138 E E 0 SEQCRD H C CYS CYS 139 139 E E 0 SEQCRD H L LEU LEU 140 140 E E 0 SEQCRD H V VAL VAL 141 141 E E 0 SEQCRD H K LYS LYS 142 142 E E 0 SEQCRD H G GLY GLY 143 143 E E 0 SEQCRD H Y TYR TYR 144 144 E E 0 SEQCRD H F PHE PHE 145 145 C C 0 SEQCRD H P PRO PRO 146 146 C C 0 SEQCRD H E GLU GLU 147 147 C C 0 SEQCRD H P PRO PRO 148 148 C C 0 SEQCRD H V VAL VAL 149 149 C C 0 SEQCRD H T THR THR 150 150 E E 0 SEQCRD H L LEU LEU 151 151 E E 0 SEQCRD H T THR THR 152 152 E E 0 SEQCRD H W TRP TRP 153 153 E E 0 SEQCRD H N ASN ASN 154 154 C C 0 SEQCRD H S SER SER 155 155 H H 0 SEQCRD H G GLY GLY 156 156 H H 0 SEQCRD H S SER SER 157 157 H H 0 SEQCRD H L LEU LEU 158 158 C C 0 SEQCRD H S SER SER 159 159 C C 0 SEQCRD H S SER SER 160 160 C C 0 SEQCRD H G GLY GLY 161 161 C C 0 SEQCRD H V VAL VAL 162 162 E E 0 SEQCRD H H HIS HIS 163 163 E E 0 SEQCRD H T THR THR 164 164 E E 0 SEQCRD H F PHE PHE 165 165 E E 0 SEQCRD H P PRO PRO 166 166 E E 0 SEQCRD H A ALA ALA 167 167 E E 0 SEQCRD H V VAL VAL 168 168 E E 0 SEQCRD H L LEU LEU 169 169 E E 0 SEQCRD H Q GLN GLN 170 170 E E 0 SEQCRD H S SER SER 171 171 C C 0 SEQCRD H D ASP ASP 172 172 C C 0 SEQCRD H L LEU LEU 173 173 E E 0 SEQCRD H Y TYR TYR 174 174 E E 0 SEQCRD H T THR THR 175 175 E E 0 SEQCRD H L LEU LEU 176 176 E E 0 SEQCRD H S SER SER 177 177 E E 0 SEQCRD H S SER SER 178 178 E E 0 SEQCRD H S SER SER 179 179 E E 0 SEQCRD H V VAL VAL 180 180 E E 0 SEQCRD H T THR THR 181 181 E E 0 SEQCRD H V VAL VAL 182 182 E E 0 SEQCRD H T THR THR 183 183 E E 0 SEQCRD H S SER SER 184 184 C C 0 SEQCRD H S SER SER 185 185 C C 0 SEQCRD H T THR THR 186 186 C C 0 SEQCRD H W TRP TRP 187 187 C C 0 SEQCRD H P PRO PRO 188 188 C C 0 SEQCRD H S SER SER 189 189 C C 0 SEQCRD H Q GLN GLN 190 190 C C 0 SEQCRD H S SER SER 191 191 C C 0 SEQCRD H I ILE ILE 192 192 C C 0 SEQCRD H T THR THR 193 193 E E 0 SEQCRD H C CYS CYS 194 194 E E 0 SEQCRD H N ASN ASN 195 195 E E 0 SEQCRD H V VAL VAL 196 196 E E 0 SEQCRD H A ALA ALA 197 197 E E 0 SEQCRD H H HIS HIS 198 198 E E 0 SEQCRD H P PRO PRO 199 199 H H 0 SEQCRD H A ALA ALA 200 200 H H 0 SEQCRD H S SER SER 201 201 H H 0 SEQCRD H S SER SER 202 202 H H 0 SEQCRD H T THR THR 203 203 E E 0 SEQCRD H K LYS LYS 204 204 E E 0 SEQCRD H V VAL VAL 205 205 E E 0 SEQCRD H D ASP ASP 206 206 E E 0 SEQCRD H K LYS LYS 207 207 E E 0 SEQCRD H K LYS LYS 208 208 E E 0 SEQCRD H I ILE ILE 209 209 C C 0 SEQCRD H E GLU GLU 210 210 C C 0 SEQCRD H P PRO PRO 211 211 C C 0 SEQCRD H R ARG ARG 212 212 C C 0 SEQCRD H G GLY GLY 213 213 C C 0 SEQCRD H P PRO PRO 214 214 C C 0 SEQCRD H T THR THR 215 215 C C 0 SEQCRD H I ILE ILE 216 216 C C 0 SEQCRD H K LYS LYS 217 217 C C 0 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 M MET MET 4 4 E E 0 SEQCRD L T THR THR 5 5 E E 0 SEQCRD L Q GLN GLN 6 6 C C 0 SEQCRD L S SER SER 7 7 C C 0 SEQCRD L A ALA ALA 8 8 C C 0 SEQCRD L F PHE PHE 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 L LEU LEU 15 15 C C 0 SEQCRD L G GLY GLY 16 16 C C 0 SEQCRD L T THR THR 17 17 C C 0 SEQCRD L S SER SER 18 18 C C 0 SEQCRD L A ALA ALA 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 K LYS LYS 27 27 C C 0 SEQCRD L S SER SER 28 28 C C 0 SEQCRD L L LEU LEU 29 29 C C 0 SEQCRD L L LEU LEU 30 30 C C 0 SEQCRD L H HIS HIS 31 31 C C 0 SEQCRD L R ARG ARG 32 32 C C 0 SEQCRD L N ASN ASN 33 33 C C 0 SEQCRD L G GLY GLY 34 34 C C 0 SEQCRD L I ILE ILE 35 35 C C 0 SEQCRD L T THR THR 36 36 C C 0 SEQCRD L Y TYR TYR 37 37 C C 0 SEQCRD L L LEU LEU 38 38 E E 0 SEQCRD L Y TYR TYR 39 39 E E 0 SEQCRD L W TRP TRP 40 40 E E 0 SEQCRD L Y TYR TYR 41 41 E E 0 SEQCRD L L LEU LEU 42 42 E E 0 SEQCRD L Q GLN GLN 43 43 E E 0 SEQCRD L K LYS LYS 44 44 C C 0 SEQCRD L P PRO PRO 45 45 C C 0 SEQCRD L G GLY GLY 46 46 C C 0 SEQCRD L Q GLN GLN 47 47 C C 0 SEQCRD L P PRO PRO 48 48 C C 0 SEQCRD L P PRO PRO 49 49 C C 0 SEQCRD L Q GLN GLN 50 50 E E 0 SEQCRD L L LEU LEU 51 51 E E 0 SEQCRD L L LEU LEU 52 52 E E 0 SEQCRD L I ILE ILE 53 53 E E 0 SEQCRD L Y TYR TYR 54 54 E E 0 SEQCRD L Q GLN GLN 55 55 C C 0 SEQCRD L M MET MET 56 56 C C 0 SEQCRD L S SER SER 57 57 C C 0 SEQCRD L N ASN ASN 58 58 E E 0 SEQCRD L L LEU LEU 59 59 E E 0 SEQCRD L A ALA ALA 60 60 C C 0 SEQCRD L S SER SER 61 61 C C 0 SEQCRD L G GLY GLY 62 62 C C 0 SEQCRD L V VAL VAL 63 63 C C 0 SEQCRD L P PRO PRO 64 64 C C 0 SEQCRD L D ASP ASP 65 65 C C 0 SEQCRD L R ARG ARG 66 66 C C 0 SEQCRD L F PHE PHE 67 67 E E 0 SEQCRD L T THR THR 68 68 E E 0 SEQCRD L S SER SER 69 69 E E 0 SEQCRD L S SER SER 70 70 E E 0 SEQCRD L G GLY GLY 71 71 E E 0 SEQCRD L S SER SER 72 72 C C 0 SEQCRD L G GLY GLY 73 73 C C 0 SEQCRD L T THR THR 74 74 C C 0 SEQCRD L D ASP ASP 75 75 E E 0 SEQCRD L F PHE PHE 76 76 E E 0 SEQCRD L T THR THR 77 77 E E 0 SEQCRD L L LEU LEU 78 78 E E 0 SEQCRD L K LYS LYS 79 79 E E 0 SEQCRD L I ILE ILE 80 80 E E 0 SEQCRD L S SER SER 81 81 C C 0 SEQCRD L R ARG ARG 82 82 C C 0 SEQCRD L V VAL VAL 83 83 C C 0 SEQCRD L E GLU GLU 84 84 H H 0 SEQCRD L A ALA ALA 85 85 H H 0 SEQCRD L E GLU GLU 86 86 H H 0 SEQCRD L D ASP ASP 87 87 H H 0 SEQCRD L V VAL VAL 88 88 H H 0 SEQCRD L G GLY GLY 89 89 E E 0 SEQCRD L V VAL VAL 90 90 E E 0 SEQCRD L Y TYR TYR 91 91 E E 0 SEQCRD L Y TYR TYR 92 92 E E 0 SEQCRD L C CYS CYS 93 93 E E 0 SEQCRD L A ALA ALA 94 94 E E 0 SEQCRD L Q GLN GLN 95 95 E E 0 SEQCRD L N ASN ASN 96 96 C C 0 SEQCRD L L LEU LEU 97 97 C C 0 SEQCRD L E GLU GLU 98 98 C C 0 SEQCRD L L LEU LEU 99 99 C C 0 SEQCRD L W TRP TRP 100 100 C C 0 SEQCRD L T THR THR 101 101 E E 0 SEQCRD L F PHE PHE 102 102 E E 0 SEQCRD L G GLY GLY 103 103 C C 0 SEQCRD L G GLY GLY 104 104 C C 0 SEQCRD L G GLY GLY 105 105 C C 0 SEQCRD L T THR THR 106 106 E E 0 SEQCRD L K LYS LYS 107 107 E E 0 SEQCRD L L LEU LEU 108 108 E E 0 SEQCRD L E GLU GLU 109 109 C C 0 SEQCRD L I ILE ILE 110 110 E E 0 SEQCRD L K LYS LYS 111 111 E E 0 SEQCRD L R ARG ARG 112 112 C C 0 SEQCRD L A ALA ALA 113 113 C C 0 SEQCRD L D ASP ASP 114 114 C C 0 SEQCRD L A ALA ALA 115 115 C C 0 SEQCRD L A ALA ALA 116 116 C C 0 SEQCRD L P PRO PRO 117 117 C C 0 SEQCRD L T THR THR 118 118 E E 0 SEQCRD L V VAL VAL 119 119 E E 0 SEQCRD L S SER SER 120 120 E E 0 SEQCRD L I ILE ILE 121 121 E E 0 SEQCRD L F PHE PHE 122 122 E E 0 SEQCRD L P PRO PRO 123 123 C C 0 SEQCRD L P PRO PRO 124 124 C C 0 SEQCRD L S SER SER 125 125 H H 0 SEQCRD L S SER SER 126 126 H H 0 SEQCRD L E GLU GLU 127 127 H H 0 SEQCRD L Q GLN GLN 128 128 H H 0 SEQCRD L L LEU LEU 129 129 H H 0 SEQCRD L T THR THR 130 130 H H 0 SEQCRD L S SER SER 131 131 H H 0 SEQCRD L G GLY GLY 132 132 C C 0 SEQCRD L G GLY GLY 133 133 E E 0 SEQCRD L A ALA ALA 134 134 E E 0 SEQCRD L S SER SER 135 135 E E 0 SEQCRD L V VAL VAL 136 136 E E 0 SEQCRD L V VAL VAL 137 137 E E 0 SEQCRD L C CYS CYS 138 138 E E 0 SEQCRD L F PHE PHE 139 139 E E 0 SEQCRD L L LEU LEU 140 140 E E 0 SEQCRD L N ASN ASN 141 141 E E 0 SEQCRD L N ASN ASN 142 142 E E 0 SEQCRD L F PHE PHE 143 143 E E 0 SEQCRD L Y TYR TYR 144 144 C C 0 SEQCRD L P PRO PRO 145 145 C C 0 SEQCRD L K LYS LYS 146 146 C C 0 SEQCRD L D ASP ASP 147 147 C C 0 SEQCRD L I ILE ILE 148 148 C C 0 SEQCRD L N ASN ASN 149 149 E E 0 SEQCRD L V VAL VAL 150 150 E E 0 SEQCRD L K LYS LYS 151 151 E E 0 SEQCRD L W TRP TRP 152 152 E E 0 SEQCRD L K LYS LYS 153 153 E E 0 SEQCRD L I ILE ILE 154 154 E E 0 SEQCRD L D ASP ASP 155 155 C C 0 SEQCRD L G GLY GLY 156 156 C C 0 SEQCRD L S SER SER 157 157 E E 0 SEQCRD L E GLU GLU 158 158 E E 0 SEQCRD L R ARG ARG 159 159 E E 0 SEQCRD L Q GLN GLN 160 160 C C 0 SEQCRD L N ASN ASN 161 161 C C 0 SEQCRD L G GLY GLY 162 162 C C 0 SEQCRD L V VAL VAL 163 163 E E 0 SEQCRD L L LEU LEU 164 164 E E 0 SEQCRD L N ASN ASN 165 165 E E 0 SEQCRD L S SER SER 166 166 E E 0 SEQCRD L W TRP TRP 167 167 E E 0 SEQCRD L T THR THR 168 168 C C 0 SEQCRD L D ASP ASP 169 169 C C 0 SEQCRD L Q GLN GLN 170 170 C C 0 SEQCRD L D ASP ASP 171 171 C C 0 SEQCRD L S SER SER 172 172 C C 0 SEQCRD L K LYS LYS 173 173 C C 0 SEQCRD L D ASP ASP 174 174 C C 0 SEQCRD L S SER SER 175 175 C C 0 SEQCRD L T THR THR 176 176 C C 0 SEQCRD L Y TYR TYR 177 177 E E 0 SEQCRD L S SER SER 178 178 E E 0 SEQCRD L M MET MET 179 179 E E 0 SEQCRD L S SER SER 180 180 E E 0 SEQCRD L S SER SER 181 181 E E 0 SEQCRD L T THR THR 182 182 E E 0 SEQCRD L L LEU LEU 183 183 E E 0 SEQCRD L T THR THR 184 184 E E 0 SEQCRD L L LEU LEU 185 185 E E 0 SEQCRD L T THR THR 186 186 E E 0 SEQCRD L K LYS LYS 187 187 H H 0 SEQCRD L D ASP ASP 188 188 H H 0 SEQCRD L E GLU GLU 189 189 H H 0 SEQCRD L Y TYR TYR 190 190 H H 0 SEQCRD L E GLU GLU 191 191 H H 0 SEQCRD L R ARG ARG 192 192 C C 0 SEQCRD L H HIS HIS 193 193 C C 0 SEQCRD L N ASN ASN 194 194 C C 0 SEQCRD L S SER SER 195 195 E E 0 SEQCRD L Y TYR TYR 196 196 E E 0 SEQCRD L T THR THR 197 197 E E 0 SEQCRD L C CYS CYS 198 198 E E 0 SEQCRD L E GLU GLU 199 199 E E 0 SEQCRD L A ALA ALA 200 200 E E 0 SEQCRD L T THR THR 201 201 E E 0 SEQCRD L H HIS HIS 202 202 C C 0 SEQCRD L K LYS LYS 203 203 C C 0 SEQCRD L T THR THR 204 204 C C 0 SEQCRD L S SER SER 205 205 C C 0 SEQCRD L T THR THR 206 206 C C 0 SEQCRD L S SER SER 207 207 C C 0 SEQCRD L P PRO PRO 208 208 C C 0 SEQCRD L I ILE ILE 209 209 E E 0 SEQCRD L V VAL VAL 210 210 E E 0 SEQCRD L K LYS LYS 211 211 E E 0 SEQCRD L S SER SER 212 212 E E 0 SEQCRD L F PHE PHE 213 213 E E 0 SEQCRD L N ASN ASN 214 214 E E 0 SEQCRD L R ARG ARG 215 215 C C 0 SEQCRD L N ASN ASN 216 216 C C 0 SEQCRD L E GLU GLU 217 217 C C 0 PARAME method XRAY PARAME resolution 1.92 PARAME R-factor 0.175 PARAME FreeR-factor 0.210