HEADSC 4ri6 SEQCRD A M MET --- 1 - - - 0 SEQCRD A A ALA ALA 2 2 C C 0 SEQCRD A T THR THR 3 3 C C 0 SEQCRD A P PRO PRO 4 4 C C 0 SEQCRD A V VAL VAL 5 5 E E 0 SEQCRD A T THR THR 6 6 E E 0 SEQCRD A I ILE ILE 7 7 E E 0 SEQCRD A Y TYR TYR 8 8 E E 0 SEQCRD A G GLY GLY 9 9 C C 0 SEQCRD A P PRO PRO 10 10 C C 0 SEQCRD A P PRO PRO 11 11 C C 0 SEQCRD A L LEU LEU 12 12 C C 0 SEQCRD A S SER SER 13 13 H H 0 SEQCRD A T THR THR 14 14 H H 0 SEQCRD A A ALA ALA 15 15 H H 0 SEQCRD A V VAL VAL 16 16 H H 0 SEQCRD A S SER SER 17 17 H H 0 SEQCRD A R ARG ARG 18 18 H H 0 SEQCRD A V VAL VAL 19 19 H H 0 SEQCRD A L LEU LEU 20 20 H H 0 SEQCRD A A ALA ALA 21 21 H H 0 SEQCRD A T THR THR 22 22 H H 0 SEQCRD A L LEU LEU 23 23 H H 0 SEQCRD A I ILE ILE 24 24 H H 0 SEQCRD A E GLU GLU 25 25 H H 0 SEQCRD A K LYS LYS 26 26 H H 0 SEQCRD A D ASP ASP 27 27 C C 0 SEQCRD A V VAL VAL 28 28 C C 0 SEQCRD A P PRO PRO 29 29 C C 0 SEQCRD A F PHE PHE 30 30 E E 0 SEQCRD A H HIS HIS 31 31 E E 0 SEQCRD A L LEU LEU 32 32 E E 0 SEQCRD A I ILE ILE 33 33 E E 0 SEQCRD A P PRO PRO 34 34 C C 0 SEQCRD A I ILE ILE 35 35 C C 0 SEQCRD A D ASP ASP 36 36 H H 0 SEQCRD A L LEU LEU 37 37 H H 0 SEQCRD A S SER SER 38 38 H H 0 SEQCRD A K LYS LYS 39 39 H H 0 SEQCRD A G GLY GLY 40 40 H H 0 SEQCRD A E GLU GLU 41 41 H H 0 SEQCRD A Q GLN GLN 42 42 H H 0 SEQCRD A K LYS LYS 43 43 H H 0 SEQCRD A K LYS LYS 44 44 H H 0 SEQCRD A P PRO PRO 45 45 H H 0 SEQCRD A E GLU GLU 46 46 H H 0 SEQCRD A Y TYR TYR 47 47 H H 0 SEQCRD A L LEU LEU 48 48 H H 0 SEQCRD A K LYS LYS 49 49 H H 0 SEQCRD A I ILE ILE 50 50 C C 0 SEQCRD A Q GLN GLN 51 51 C C 0 SEQCRD A P PRO PRO 52 52 C C 0 SEQCRD A F PHE PHE 53 53 C C 0 SEQCRD A G GLY GLY 54 54 C C 0 SEQCRD A Q GLN GLN 55 55 C C 0 SEQCRD A V VAL VAL 56 56 C C 0 SEQCRD A P PRO PRO 57 57 C C 0 SEQCRD A A ALA ALA 58 58 E E 0 SEQCRD A F PHE PHE 59 59 E E 0 SEQCRD A K LYS LYS 60 60 E E 0 SEQCRD A D ASP ASP 61 61 C C 0 SEQCRD A E GLU GLU 62 62 C C 0 SEQCRD A S SER SER 63 63 C C 0 SEQCRD A I ILE ILE 64 64 C C 0 SEQCRD A T THR THR 65 65 E E 0 SEQCRD A L LEU LEU 66 66 E E 0 SEQCRD A F PHE PHE 67 67 E E 0 SEQCRD A E GLU GLU 68 68 H H 0 SEQCRD A S SER SER 69 69 H H 0 SEQCRD A R ARG ARG 70 70 H H 0 SEQCRD A A ALA ALA 71 71 H H 0 SEQCRD A I ILE ILE 72 72 H H 0 SEQCRD A C CYS CYS 73 73 H H 0 SEQCRD A R ARG ARG 74 74 H H 0 SEQCRD A Y TYR TYR 75 75 H H 0 SEQCRD A I ILE ILE 76 76 H H 0 SEQCRD A C CYS CYS 77 77 H H 0 SEQCRD A D ASP ASP 78 78 H H 0 SEQCRD A K LYS LYS 79 79 H H 0 SEQCRD A Y TYR TYR 80 80 H H 0 SEQCRD A A ALA ALA 81 81 C C 0 SEQCRD A D ASP ASP 82 82 C C 0 SEQCRD A K LYS LYS 83 83 C C 0 SEQCRD A G GLY GLY 84 84 C C 0 SEQCRD A N ASN ASN 85 85 C C 0 SEQCRD A K LYS LYS 86 86 C C 0 SEQCRD A S SER SER 87 87 C C 0 SEQCRD A L LEU LEU 88 88 C C 0 SEQCRD A Y TYR TYR 89 89 C C 0 SEQCRD A G GLY GLY 90 90 C C 0 SEQCRD A T THR THR 91 91 C C 0 SEQCRD A D ASP ASP 92 92 H H 0 SEQCRD A I ILE ILE 93 93 H H 0 SEQCRD A L LEU LEU 94 94 H H 0 SEQCRD A S SER SER 95 95 H H 0 SEQCRD A K LYS LYS 96 96 H H 0 SEQCRD A A ALA ALA 97 97 H H 0 SEQCRD A N ASN ASN 98 98 H H 0 SEQCRD A I ILE ILE 99 99 H H 0 SEQCRD A D ASP ASP 100 100 H H 0 SEQCRD A Q GLN GLN 101 101 H H 0 SEQCRD A W TRP TRP 102 102 H H 0 SEQCRD A V VAL VAL 103 103 H H 0 SEQCRD A E GLU GLU 104 104 H H 0 SEQCRD A T THR THR 105 105 H H 0 SEQCRD A D ASP ASP 106 106 H H 0 SEQCRD A G GLY GLY 107 107 H H 0 SEQCRD A Q GLN GLN 108 108 H H 0 SEQCRD A T THR THR 109 109 H H 0 SEQCRD A F PHE PHE 110 110 H H 0 SEQCRD A G GLY GLY 111 111 H H 0 SEQCRD A P PRO PRO 112 112 H H 0 SEQCRD A P PRO PRO 113 113 H H 0 SEQCRD A S SER SER 114 114 H H 0 SEQCRD A G GLY GLY 115 115 H H 0 SEQCRD A D ASP ASP 116 116 H H 0 SEQCRD A L LEU LEU 117 117 H H 0 SEQCRD A V VAL VAL 118 118 H H 0 SEQCRD A H HIS HIS 119 119 H H 0 SEQCRD A D ASP ASP 120 120 H H 0 SEQCRD A L LEU LEU 121 121 H H 0 SEQCRD A L LEU LEU 122 122 H H 0 SEQCRD A F PHE PHE 123 123 H H 0 SEQCRD A S SER SER 124 124 C C 0 SEQCRD A S SER SER 125 125 C C 0 SEQCRD A V VAL VAL 126 126 C C 0 SEQCRD A P PRO PRO 127 127 C C 0 SEQCRD A V VAL VAL 128 128 C C 0 SEQCRD A D ASP ASP 129 129 H H 0 SEQCRD A E GLU GLU 130 130 H H 0 SEQCRD A A ALA ALA 131 131 H H 0 SEQCRD A L LEU LEU 132 132 H H 0 SEQCRD A I ILE ILE 133 133 H H 0 SEQCRD A K LYS LYS 134 134 H H 0 SEQCRD A K LYS LYS 135 135 H H 0 SEQCRD A N ASN ASN 136 136 H H 0 SEQCRD A V VAL VAL 137 137 H H 0 SEQCRD A D ASP ASP 138 138 H H 0 SEQCRD A K LYS LYS 139 139 H H 0 SEQCRD A L LEU LEU 140 140 H H 0 SEQCRD A A ALA ALA 141 141 H H 0 SEQCRD A K LYS LYS 142 142 H H 0 SEQCRD A V VAL VAL 143 143 H H 0 SEQCRD A L LEU LEU 144 144 H H 0 SEQCRD A D ASP ASP 145 145 H H 0 SEQCRD A I ILE ILE 146 146 H H 0 SEQCRD A Y TYR TYR 147 147 H H 0 SEQCRD A E GLU GLU 148 148 H H 0 SEQCRD A Q GLN GLN 149 149 H H 0 SEQCRD A K LYS LYS 150 150 H H 0 SEQCRD A L LEU LEU 151 151 H H 0 SEQCRD A G GLY GLY 152 152 C C 0 SEQCRD A Q GLN GLN 153 153 C C 0 SEQCRD A T THR THR 154 154 C C 0 SEQCRD A R ARG ARG 155 155 C C 0 SEQCRD A F PHE PHE 156 156 C C 0 SEQCRD A L LEU LEU 157 157 C C 0 SEQCRD A A ALA ALA 158 158 C C 0 SEQCRD A G GLY GLY 159 159 C C 0 SEQCRD A D ASP ASP 160 160 C C 0 SEQCRD A E GLU GLU 161 161 C C 0 SEQCRD A F PHE PHE 162 162 C C 0 SEQCRD A S SER SER 163 163 H H 0 SEQCRD A F PHE PHE 164 164 H H 0 SEQCRD A A ALA ALA 165 165 H H 0 SEQCRD A D ASP ASP 166 166 H H 0 SEQCRD A L LEU LEU 167 167 H H 0 SEQCRD A S SER SER 168 168 H H 0 SEQCRD A H HIS HIS 169 169 H H 0 SEQCRD A L LEU LEU 170 170 H H 0 SEQCRD A P PRO PRO 171 171 H H 0 SEQCRD A N ASN ASN 172 172 H H 0 SEQCRD A G GLY GLY 173 173 H H 0 SEQCRD A D ASP ASP 174 174 H H 0 SEQCRD A Y TYR TYR 175 175 H H 0 SEQCRD A L LEU LEU 176 176 H H 0 SEQCRD A V VAL VAL 177 177 H H 0 SEQCRD A N ASN ASN 178 178 H H 0 SEQCRD A S SER SER 179 179 H H 0 SEQCRD A T THR THR 180 180 H H 0 SEQCRD A D ASP ASP 181 181 C C 0 SEQCRD A K LYS LYS 182 182 C C 0 SEQCRD A G GLY GLY 183 183 H H 0 SEQCRD A Y TYR TYR 184 184 H H 0 SEQCRD A L LEU LEU 185 185 H H 0 SEQCRD A F PHE PHE 186 186 H H 0 SEQCRD A T THR THR 187 187 H H 0 SEQCRD A S SER SER 188 188 H H 0 SEQCRD A R ARG ARG 189 189 H H 0 SEQCRD A K LYS LYS 190 190 H H 0 SEQCRD A N ASN ASN 191 191 H H 0 SEQCRD A V VAL VAL 192 192 H H 0 SEQCRD A N ASN ASN 193 193 H H 0 SEQCRD A R ARG ARG 194 194 H H 0 SEQCRD A W TRP TRP 195 195 H H 0 SEQCRD A W TRP TRP 196 196 H H 0 SEQCRD A T THR THR 197 197 H H 0 SEQCRD A E GLU GLU 198 198 H H 0 SEQCRD A I ILE ILE 199 199 H H 0 SEQCRD A S SER SER 200 200 H H 0 SEQCRD A N ASN ASN 201 201 H H 0 SEQCRD A R ARG ARG 202 202 H H 0 SEQCRD A E GLU GLU 203 203 H H 0 SEQCRD A S SER SER 204 204 H H 0 SEQCRD A W TRP TRP 205 205 H H 0 SEQCRD A K LYS LYS 206 206 H H 0 SEQCRD A K LYS LYS 207 207 H H 0 SEQCRD A V VAL VAL 208 208 H H 0 SEQCRD A L LEU LEU 209 209 H H 0 SEQCRD A E GLU GLU 210 210 H H 0 SEQCRD A M MET MET 211 211 H H 0 SEQCRD A R ARG ARG 212 212 H H 0 SEQCRD A K LYS LYS 213 213 H H 0 SEQCRD A N ASN ASN 214 214 H H 0 SEQCRD A A ALA ALA 215 215 H H 0 SEQCRD B M MET --- 1 - - - 0 SEQCRD B A ALA ALA 2 2 C C 0 SEQCRD B T THR THR 3 3 C C 0 SEQCRD B P PRO PRO 4 4 C C 0 SEQCRD B V VAL VAL 5 5 E E 0 SEQCRD B T THR THR 6 6 E E 0 SEQCRD B I ILE ILE 7 7 E E 0 SEQCRD B Y TYR TYR 8 8 E E 0 SEQCRD B G GLY GLY 9 9 C C 0 SEQCRD B P PRO PRO 10 10 C C 0 SEQCRD B P PRO PRO 11 11 C C 0 SEQCRD B L LEU LEU 12 12 C C 0 SEQCRD B S SER SER 13 13 H H 0 SEQCRD B T THR THR 14 14 H H 0 SEQCRD B A ALA ALA 15 15 H H 0 SEQCRD B V VAL VAL 16 16 H H 0 SEQCRD B S SER SER 17 17 H H 0 SEQCRD B R ARG ARG 18 18 H H 0 SEQCRD B V VAL VAL 19 19 H H 0 SEQCRD B L LEU LEU 20 20 H H 0 SEQCRD B A ALA ALA 21 21 H H 0 SEQCRD B T THR THR 22 22 H H 0 SEQCRD B L LEU LEU 23 23 H H 0 SEQCRD B I ILE ILE 24 24 H H 0 SEQCRD B E GLU GLU 25 25 H H 0 SEQCRD B K LYS LYS 26 26 H H 0 SEQCRD B D ASP ASP 27 27 C C 0 SEQCRD B V VAL VAL 28 28 C C 0 SEQCRD B P PRO PRO 29 29 C C 0 SEQCRD B F PHE PHE 30 30 E E 0 SEQCRD B H HIS HIS 31 31 E E 0 SEQCRD B L LEU LEU 32 32 E E 0 SEQCRD B I ILE ILE 33 33 E E 0 SEQCRD B P PRO PRO 34 34 C C 0 SEQCRD B I ILE ILE 35 35 C C 0 SEQCRD B D ASP ASP 36 36 H H 0 SEQCRD B L LEU LEU 37 37 H H 0 SEQCRD B S SER SER 38 38 H H 0 SEQCRD B K LYS LYS 39 39 H H 0 SEQCRD B G GLY GLY 40 40 H H 0 SEQCRD B E GLU GLU 41 41 H H 0 SEQCRD B Q GLN GLN 42 42 H H 0 SEQCRD B K LYS LYS 43 43 H H 0 SEQCRD B K LYS LYS 44 44 H H 0 SEQCRD B P PRO PRO 45 45 H H 0 SEQCRD B E GLU GLU 46 46 H H 0 SEQCRD B Y TYR TYR 47 47 H H 0 SEQCRD B L LEU LEU 48 48 H H 0 SEQCRD B K LYS LYS 49 49 H H 0 SEQCRD B I ILE ILE 50 50 C C 0 SEQCRD B Q GLN GLN 51 51 C C 0 SEQCRD B P PRO PRO 52 52 C C 0 SEQCRD B F PHE PHE 53 53 C C 0 SEQCRD B G GLY GLY 54 54 C C 0 SEQCRD B Q GLN GLN 55 55 C C 0 SEQCRD B V VAL VAL 56 56 C C 0 SEQCRD B P PRO PRO 57 57 C C 0 SEQCRD B A ALA ALA 58 58 E E 0 SEQCRD B F PHE PHE 59 59 E E 0 SEQCRD B K LYS LYS 60 60 E E 0 SEQCRD B D ASP ASP 61 61 C C 0 SEQCRD B E GLU GLU 62 62 C C 0 SEQCRD B S SER SER 63 63 C C 0 SEQCRD B I ILE ILE 64 64 C C 0 SEQCRD B T THR THR 65 65 E E 0 SEQCRD B L LEU LEU 66 66 E E 0 SEQCRD B F PHE PHE 67 67 E E 0 SEQCRD B E GLU GLU 68 68 H H 0 SEQCRD B S SER SER 69 69 H H 0 SEQCRD B R ARG ARG 70 70 H H 0 SEQCRD B A ALA ALA 71 71 H H 0 SEQCRD B I ILE ILE 72 72 H H 0 SEQCRD B C CYS CYS 73 73 H H 0 SEQCRD B R ARG ARG 74 74 H H 0 SEQCRD B Y TYR TYR 75 75 H H 0 SEQCRD B I ILE ILE 76 76 H H 0 SEQCRD B C CYS CYS 77 77 H H 0 SEQCRD B D ASP ASP 78 78 H H 0 SEQCRD B K LYS LYS 79 79 H H 0 SEQCRD B Y TYR TYR 80 80 H H 0 SEQCRD B A ALA ALA 81 81 C C 0 SEQCRD B D ASP ASP 82 82 C C 0 SEQCRD B K LYS LYS 83 83 C C 0 SEQCRD B G GLY GLY 84 84 C C 0 SEQCRD B N ASN ASN 85 85 C C 0 SEQCRD B K LYS LYS 86 86 C C 0 SEQCRD B S SER SER 87 87 C C 0 SEQCRD B L LEU LEU 88 88 C C 0 SEQCRD B Y TYR TYR 89 89 C C 0 SEQCRD B G GLY GLY 90 90 C C 0 SEQCRD B T THR THR 91 91 C C 0 SEQCRD B D ASP ASP 92 92 H H 0 SEQCRD B I ILE ILE 93 93 H H 0 SEQCRD B L LEU LEU 94 94 H H 0 SEQCRD B S SER SER 95 95 H H 0 SEQCRD B K LYS LYS 96 96 H H 0 SEQCRD B A ALA ALA 97 97 H H 0 SEQCRD B N ASN ASN 98 98 H H 0 SEQCRD B I ILE ILE 99 99 H H 0 SEQCRD B D ASP ASP 100 100 H H 0 SEQCRD B Q GLN GLN 101 101 H H 0 SEQCRD B W TRP TRP 102 102 H H 0 SEQCRD B V VAL VAL 103 103 H H 0 SEQCRD B E GLU GLU 104 104 H H 0 SEQCRD B T THR THR 105 105 H H 0 SEQCRD B D ASP ASP 106 106 H H 0 SEQCRD B G GLY GLY 107 107 H H 0 SEQCRD B Q GLN GLN 108 108 H H 0 SEQCRD B T THR THR 109 109 H H 0 SEQCRD B F PHE PHE 110 110 H H 0 SEQCRD B G GLY GLY 111 111 H H 0 SEQCRD B P PRO PRO 112 112 H H 0 SEQCRD B P PRO PRO 113 113 H H 0 SEQCRD B S SER SER 114 114 H H 0 SEQCRD B G GLY GLY 115 115 H H 0 SEQCRD B D ASP ASP 116 116 H H 0 SEQCRD B L LEU LEU 117 117 H H 0 SEQCRD B V VAL VAL 118 118 H H 0 SEQCRD B H HIS HIS 119 119 H H 0 SEQCRD B D ASP ASP 120 120 H H 0 SEQCRD B L LEU LEU 121 121 H H 0 SEQCRD B L LEU LEU 122 122 H H 0 SEQCRD B F PHE PHE 123 123 H H 0 SEQCRD B S SER SER 124 124 C C 0 SEQCRD B S SER SER 125 125 C C 0 SEQCRD B V VAL VAL 126 126 C C 0 SEQCRD B P PRO PRO 127 127 C C 0 SEQCRD B V VAL VAL 128 128 C C 0 SEQCRD B D ASP ASP 129 129 H H 0 SEQCRD B E GLU GLU 130 130 H H 0 SEQCRD B A ALA ALA 131 131 H H 0 SEQCRD B L LEU LEU 132 132 H H 0 SEQCRD B I ILE ILE 133 133 H H 0 SEQCRD B K LYS LYS 134 134 H H 0 SEQCRD B K LYS LYS 135 135 H H 0 SEQCRD B N ASN ASN 136 136 H H 0 SEQCRD B V VAL VAL 137 137 H H 0 SEQCRD B D ASP ASP 138 138 H H 0 SEQCRD B K LYS LYS 139 139 H H 0 SEQCRD B L LEU LEU 140 140 H H 0 SEQCRD B A ALA ALA 141 141 H H 0 SEQCRD B K LYS LYS 142 142 H H 0 SEQCRD B V VAL VAL 143 143 H H 0 SEQCRD B L LEU LEU 144 144 H H 0 SEQCRD B D ASP ASP 145 145 H H 0 SEQCRD B I ILE ILE 146 146 H H 0 SEQCRD B Y TYR TYR 147 147 H H 0 SEQCRD B E GLU GLU 148 148 H H 0 SEQCRD B Q GLN GLN 149 149 H H 0 SEQCRD B K LYS LYS 150 150 H H 0 SEQCRD B L LEU LEU 151 151 H H 0 SEQCRD B G GLY GLY 152 152 C C 0 SEQCRD B Q GLN GLN 153 153 C C 0 SEQCRD B T THR THR 154 154 C C 0 SEQCRD B R ARG ARG 155 155 C C 0 SEQCRD B F PHE PHE 156 156 C C 0 SEQCRD B L LEU LEU 157 157 C C 0 SEQCRD B A ALA ALA 158 158 C C 0 SEQCRD B G GLY GLY 159 159 C C 0 SEQCRD B D ASP ASP 160 160 C C 0 SEQCRD B E GLU GLU 161 161 C C 0 SEQCRD B F PHE PHE 162 162 C C 0 SEQCRD B S SER SER 163 163 H H 0 SEQCRD B F PHE PHE 164 164 H H 0 SEQCRD B A ALA ALA 165 165 H H 0 SEQCRD B D ASP ASP 166 166 H H 0 SEQCRD B L LEU LEU 167 167 H H 0 SEQCRD B S SER SER 168 168 H H 0 SEQCRD B H HIS HIS 169 169 H H 0 SEQCRD B L LEU LEU 170 170 H H 0 SEQCRD B P PRO PRO 171 171 H H 0 SEQCRD B N ASN ASN 172 172 H H 0 SEQCRD B G GLY GLY 173 173 H H 0 SEQCRD B D ASP ASP 174 174 H H 0 SEQCRD B Y TYR TYR 175 175 H H 0 SEQCRD B L LEU LEU 176 176 H H 0 SEQCRD B V VAL VAL 177 177 H H 0 SEQCRD B N ASN ASN 178 178 H H 0 SEQCRD B S SER SER 179 179 H H 0 SEQCRD B T THR THR 180 180 H H 0 SEQCRD B D ASP ASP 181 181 C C 0 SEQCRD B K LYS LYS 182 182 C C 0 SEQCRD B G GLY GLY 183 183 H H 0 SEQCRD B Y TYR TYR 184 184 H H 0 SEQCRD B L LEU LEU 185 185 H H 0 SEQCRD B F PHE PHE 186 186 H H 0 SEQCRD B T THR THR 187 187 H H 0 SEQCRD B S SER SER 188 188 H H 0 SEQCRD B R ARG ARG 189 189 H H 0 SEQCRD B K LYS LYS 190 190 H H 0 SEQCRD B N ASN ASN 191 191 H H 0 SEQCRD B V VAL VAL 192 192 H H 0 SEQCRD B N ASN ASN 193 193 H H 0 SEQCRD B R ARG ARG 194 194 H H 0 SEQCRD B W TRP TRP 195 195 H H 0 SEQCRD B W TRP TRP 196 196 H H 0 SEQCRD B T THR THR 197 197 H H 0 SEQCRD B E GLU GLU 198 198 H H 0 SEQCRD B I ILE ILE 199 199 H H 0 SEQCRD B S SER SER 200 200 H H 0 SEQCRD B N ASN ASN 201 201 H H 0 SEQCRD B R ARG ARG 202 202 H H 0 SEQCRD B E GLU GLU 203 203 H H 0 SEQCRD B S SER SER 204 204 H H 0 SEQCRD B W TRP TRP 205 205 H H 0 SEQCRD B K LYS LYS 206 206 H H 0 SEQCRD B K LYS LYS 207 207 H H 0 SEQCRD B V VAL VAL 208 208 H H 0 SEQCRD B L LEU LEU 209 209 H H 0 SEQCRD B E GLU GLU 210 210 H H 0 SEQCRD B M MET MET 211 211 H H 0 SEQCRD B R ARG ARG 212 212 H H 0 SEQCRD B K LYS LYS 213 213 H H 0 SEQCRD B N ASN ASN 214 214 H H 0 SEQCRD B A ALA ALA 215 215 C C 0 PARAME method XRAY PARAME resolution 1.523 PARAME R-factor 0.1528 PARAME FreeR-factor 0.1827