0.014278 0.000000 0.001042 0.000000 0.023446 -0.000001 0.000000 0.000000 0.019077 0.00000 0.00000 0.00000 Weichsel, A. Andersen, J.F. Roberts, S.A. Montfort, W.R. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic 4 90.00 94.18 90.00 70.036 42.652 52.559 C3 H7 N O2 89.093 y ALANINE L-peptide linking C6 H15 N4 O2 1 175.209 y ARGININE L-peptide linking C4 H8 N2 O3 132.118 y ASPARAGINE L-peptide linking C4 H7 N O4 133.103 y ASPARTIC ACID L-peptide linking C6 H8 O7 192.124 CITRIC ACID non-polymer C N -1 26.017 CYANIDE ION non-polymer C3 H7 N O2 S 121.158 y CYSTEINE L-peptide linking C5 H10 N2 O3 146.144 y GLUTAMINE L-peptide linking C5 H9 N O4 147.129 y GLUTAMIC ACID L-peptide linking C2 H5 N O2 75.067 y GLYCINE peptide linking C36 H32 Fe N4 O4 640.509 5,8-DIMETHYL-1,2,3,4-TETRAVINYLPORPHINE-6,7-DIPROPIONIC ACID FERROUS COMPLEX 1,3-DEDIMETHYL-1,3-DIVINYL HEME non-polymer C6 H10 N3 O2 1 156.162 y HISTIDINE L-peptide linking H2 O 18.015 WATER non-polymer C6 H13 N O2 131.173 y ISOLEUCINE L-peptide linking C6 H13 N O2 131.173 y LEUCINE L-peptide linking C6 H15 N2 O2 1 147.195 y LYSINE L-peptide linking C5 H11 N O2 S 149.211 y METHIONINE L-peptide linking C9 H11 N O2 165.189 y PHENYLALANINE L-peptide linking C5 H9 N O2 115.130 y PROLINE L-peptide linking C3 H7 N O3 105.093 y SERINE L-peptide linking C4 H9 N O3 119.119 y THREONINE L-peptide linking C11 H12 N2 O2 204.225 y TRYPTOPHAN L-peptide linking C9 H11 N O3 181.189 y TYROSINE L-peptide linking C5 H11 N O2 117.146 y VALINE L-peptide linking US Nat.Struct.Biol. NSBIEW 2024 1072-8368 7 551 554 10.1038/76769 10876239 Nitric oxide binding to nitrophorin 4 induces complete distal pocket burial. 2000 UK Structure STRUE6 2005 0969-2126 6 1315 1327 10.1016/S0969-2126(98)00131-2 The crystal structure of nitrophorin 4 at 1.5 A resolution: transport of nitric oxide by a lipocalin-based heme protein. 1998 US Nat.Struct.Biol. NSBIEW 2024 1072-8368 5 304 309 Crystal structure of a nitric oxide transport protein from a blood-sucking insect. 1998 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 140 1 DIFFRACTOMETER 1999-10-21 ENRAF-NONIUS FAST SINGLE WAVELENGTH M x-ray 1 1.5418 1.0 1.5418 ROTATING ANODE ENRAF-NONIUS FR571 20292.664 NITROPHORIN 4 1 nat polymer 26.017 CYANIDE ION 1 syn non-polymer 640.509 5,8-DIMETHYL-1,2,3,4-TETRAVINYLPORPHINE-6,7-DIPROPIONIC ACID FERROUS COMPLEX 1 syn non-polymer 192.124 CITRIC ACID 1 syn non-polymer 18.015 water 200 nat water no no ACTKNAIAQTGFNKDKYFNGDVWYVTDYLDLEPDDVPKRYCAALAAGTASGKLKEALYHYDPKTQDTFYDVSELQVESLG KYTANFKKVDKNGNVKVAVTAGNYYTFTVMYADDSSALIHTCLHKGNKDLGDLYAVLNRNKDAAAGDKVKSAVSAATLEF SKFISTKENNCAYDNDSLKSLLTK ACTKNAIAQTGFNKDKYFNGDVWYVTDYLDLEPDDVPKRYCAALAAGTASGKLKEALYHYDPKTQDTFYDVSELQVESLG KYTANFKKVDKNGNVKVAVTAGNYYTFTVMYADDSSALIHTCLHKGNKDLGDLYAVLNRNKDAAAGDKVKSAVSAATLEF SKFISTKENNCAYDNDSLKSLLTK A polypeptide(L) n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n SALIVA Rhodnius sample 13249 Rhodnius prolixus 1 1.93 36.23 VAPOR DIFFUSION, HANGING DROP 5.6 PEG 4000, sodium citrate, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K 298 software citation_author diffrn_detector repository Initial release Version format compliance Version format compliance Refinement description Database references Data collection 1 0 2000-05-03 1 1 2008-04-27 1 2 2011-07-13 1 3 2017-10-04 1 4 2018-01-31 1 5 2018-04-18 _software.name _citation_author.name _diffrn_detector.detector 1D3S contains the same protein with H2O bound to the heme CRYSTAL STRUCTURE OF NITROPHORIN 4 COMPLEXED WITH NO RCSB Y RCSB 2000-04-03 REL CYN CYANIDE ION HEV 5,8-DIMETHYL-1,2,3,4-TETRAVINYLPORPHINE-6,7-DIPROPIONIC ACID FERROUS COMPLEX CIT CITRIC ACID HOH water CYN 186 2 CYN CYN 186 A HEV 185 3 HEV HEV 185 A CIT 187 4 CIT CIT 187 A HOH 188 5 HOH HOH 188 A HOH 189 5 HOH HOH 189 A HOH 190 5 HOH HOH 190 A HOH 191 5 HOH HOH 191 A HOH 192 5 HOH HOH 192 A HOH 193 5 HOH HOH 193 A HOH 194 5 HOH HOH 194 A HOH 195 5 HOH HOH 195 A HOH 196 5 HOH HOH 196 A HOH 197 5 HOH HOH 197 A HOH 198 5 HOH HOH 198 A HOH 199 5 HOH HOH 199 A HOH 200 5 HOH HOH 200 A HOH 201 5 HOH HOH 201 A HOH 202 5 HOH HOH 202 A HOH 203 5 HOH HOH 203 A HOH 204 5 HOH HOH 204 A HOH 205 5 HOH HOH 205 A HOH 206 5 HOH HOH 206 A HOH 207 5 HOH HOH 207 A HOH 208 5 HOH HOH 208 A HOH 209 5 HOH HOH 209 A HOH 210 5 HOH HOH 210 A HOH 211 5 HOH HOH 211 A HOH 212 5 HOH HOH 212 A HOH 213 5 HOH HOH 213 A HOH 214 5 HOH HOH 214 A HOH 215 5 HOH HOH 215 A HOH 216 5 HOH HOH 216 A HOH 217 5 HOH HOH 217 A HOH 218 5 HOH HOH 218 A HOH 219 5 HOH HOH 219 A HOH 220 5 HOH HOH 220 A HOH 221 5 HOH HOH 221 A HOH 222 5 HOH HOH 222 A HOH 223 5 HOH HOH 223 A HOH 224 5 HOH HOH 224 A HOH 225 5 HOH HOH 225 A HOH 226 5 HOH HOH 226 A HOH 227 5 HOH HOH 227 A HOH 228 5 HOH HOH 228 A HOH 229 5 HOH HOH 229 A HOH 230 5 HOH HOH 230 A HOH 231 5 HOH HOH 231 A HOH 232 5 HOH HOH 232 A HOH 233 5 HOH HOH 233 A HOH 234 5 HOH HOH 234 A HOH 235 5 HOH HOH 235 A HOH 236 5 HOH HOH 236 A HOH 237 5 HOH HOH 237 A HOH 238 5 HOH HOH 238 A HOH 239 5 HOH HOH 239 A HOH 240 5 HOH HOH 240 A HOH 241 5 HOH HOH 241 A HOH 242 5 HOH HOH 242 A HOH 243 5 HOH HOH 243 A HOH 244 5 HOH HOH 244 A HOH 245 5 HOH HOH 245 A HOH 246 5 HOH HOH 246 A HOH 247 5 HOH HOH 247 A HOH 248 5 HOH HOH 248 A HOH 249 5 HOH HOH 249 A HOH 250 5 HOH HOH 250 A HOH 251 5 HOH HOH 251 A HOH 252 5 HOH HOH 252 A HOH 253 5 HOH HOH 253 A HOH 254 5 HOH HOH 254 A HOH 255 5 HOH HOH 255 A HOH 256 5 HOH HOH 256 A HOH 257 5 HOH HOH 257 A HOH 258 5 HOH HOH 258 A HOH 259 5 HOH HOH 259 A HOH 260 5 HOH HOH 260 A HOH 261 5 HOH HOH 261 A HOH 262 5 HOH HOH 262 A HOH 263 5 HOH HOH 263 A HOH 264 5 HOH HOH 264 A HOH 265 5 HOH HOH 265 A HOH 266 5 HOH HOH 266 A HOH 267 5 HOH HOH 267 A HOH 268 5 HOH HOH 268 A HOH 269 5 HOH HOH 269 A HOH 270 5 HOH HOH 270 A HOH 271 5 HOH HOH 271 A HOH 272 5 HOH HOH 272 A HOH 273 5 HOH HOH 273 A HOH 274 5 HOH HOH 274 A HOH 275 5 HOH HOH 275 A HOH 276 5 HOH HOH 276 A HOH 277 5 HOH HOH 277 A HOH 278 5 HOH HOH 278 A HOH 279 5 HOH HOH 279 A HOH 280 5 HOH HOH 280 A HOH 281 5 HOH HOH 281 A HOH 282 5 HOH HOH 282 A HOH 283 5 HOH HOH 283 A HOH 284 5 HOH HOH 284 A HOH 285 5 HOH HOH 285 A HOH 286 5 HOH HOH 286 A HOH 287 5 HOH HOH 287 A HOH 288 5 HOH HOH 288 A HOH 289 5 HOH HOH 289 A HOH 290 5 HOH HOH 290 A HOH 291 5 HOH HOH 291 A HOH 292 5 HOH HOH 292 A HOH 293 5 HOH HOH 293 A HOH 294 5 HOH HOH 294 A HOH 295 5 HOH HOH 295 A HOH 296 5 HOH HOH 296 A HOH 297 5 HOH HOH 297 A HOH 298 5 HOH HOH 298 A HOH 299 5 HOH HOH 299 A HOH 300 5 HOH HOH 300 A HOH 301 5 HOH HOH 301 A HOH 302 5 HOH HOH 302 A HOH 303 5 HOH HOH 303 A HOH 304 5 HOH HOH 304 A HOH 305 5 HOH HOH 305 A HOH 306 5 HOH HOH 306 A HOH 307 5 HOH HOH 307 A HOH 308 5 HOH HOH 308 A HOH 309 5 HOH HOH 309 A HOH 310 5 HOH HOH 310 A HOH 311 5 HOH HOH 311 A HOH 312 5 HOH HOH 312 A HOH 313 5 HOH HOH 313 A HOH 314 5 HOH HOH 314 A HOH 315 5 HOH HOH 315 A HOH 316 5 HOH HOH 316 A HOH 317 5 HOH HOH 317 A HOH 318 5 HOH HOH 318 A HOH 319 5 HOH HOH 319 A HOH 320 5 HOH HOH 320 A HOH 321 5 HOH HOH 321 A HOH 322 5 HOH HOH 322 A HOH 323 5 HOH HOH 323 A HOH 324 5 HOH HOH 324 A HOH 325 5 HOH HOH 325 A HOH 326 5 HOH HOH 326 A HOH 327 5 HOH HOH 327 A HOH 328 5 HOH HOH 328 A HOH 329 5 HOH HOH 329 A HOH 330 5 HOH HOH 330 A HOH 331 5 HOH HOH 331 A HOH 332 5 HOH HOH 332 A HOH 333 5 HOH HOH 333 A HOH 334 5 HOH HOH 334 A HOH 335 5 HOH HOH 335 A HOH 336 5 HOH HOH 336 A HOH 337 5 HOH HOH 337 A HOH 338 5 HOH HOH 338 A HOH 339 5 HOH HOH 339 A HOH 340 5 HOH HOH 340 A HOH 341 5 HOH HOH 341 A HOH 342 5 HOH HOH 342 A HOH 343 5 HOH HOH 343 A HOH 344 5 HOH HOH 344 A HOH 345 5 HOH HOH 345 A HOH 346 5 HOH HOH 346 A HOH 347 5 HOH HOH 347 A HOH 348 5 HOH HOH 348 A HOH 349 5 HOH HOH 349 A HOH 350 5 HOH HOH 350 A HOH 351 5 HOH HOH 351 A HOH 352 5 HOH HOH 352 A HOH 353 5 HOH HOH 353 A HOH 354 5 HOH HOH 354 A HOH 355 5 HOH HOH 355 A HOH 356 5 HOH HOH 356 A HOH 357 5 HOH HOH 357 A HOH 358 5 HOH HOH 358 A HOH 359 5 HOH HOH 359 A HOH 360 5 HOH HOH 360 A HOH 361 5 HOH HOH 361 A HOH 362 5 HOH HOH 362 A HOH 363 5 HOH HOH 363 A HOH 364 5 HOH HOH 364 A HOH 365 5 HOH HOH 365 A HOH 366 5 HOH HOH 366 A HOH 367 5 HOH HOH 367 A HOH 368 5 HOH HOH 368 A HOH 369 5 HOH HOH 369 A HOH 370 5 HOH HOH 370 A HOH 371 5 HOH HOH 371 A HOH 372 5 HOH HOH 372 A HOH 373 5 HOH HOH 373 A HOH 374 5 HOH HOH 374 A HOH 375 5 HOH HOH 375 A HOH 376 5 HOH HOH 376 A HOH 377 5 HOH HOH 377 A HOH 378 5 HOH HOH 378 A HOH 379 5 HOH HOH 379 A HOH 380 5 HOH HOH 380 A HOH 381 5 HOH HOH 381 A HOH 382 5 HOH HOH 382 A HOH 383 5 HOH HOH 383 A HOH 384 5 HOH HOH 384 A HOH 385 5 HOH HOH 385 A HOH 386 5 HOH HOH 386 A HOH 387 5 HOH HOH 387 A ALA 1 n 1 ALA 1 A CYS 2 n 2 CYS 2 A THR 3 n 3 THR 3 A LYS 4 n 4 LYS 4 A ASN 5 n 5 ASN 5 A ALA 6 n 6 ALA 6 A ILE 7 n 7 ILE 7 A ALA 8 n 8 ALA 8 A GLN 9 n 9 GLN 9 A THR 10 n 10 THR 10 A GLY 11 n 11 GLY 11 A PHE 12 n 12 PHE 12 A ASN 13 n 13 ASN 13 A LYS 14 n 14 LYS 14 A ASP 15 n 15 ASP 15 A LYS 16 n 16 LYS 16 A TYR 17 n 17 TYR 17 A PHE 18 n 18 PHE 18 A ASN 19 n 19 ASN 19 A GLY 20 n 20 GLY 20 A ASP 21 n 21 ASP 21 A VAL 22 n 22 VAL 22 A TRP 23 n 23 TRP 23 A TYR 24 n 24 TYR 24 A VAL 25 n 25 VAL 25 A THR 26 n 26 THR 26 A ASP 27 n 27 ASP 27 A TYR 28 n 28 TYR 28 A LEU 29 n 29 LEU 29 A ASP 30 n 30 ASP 30 A LEU 31 n 31 LEU 31 A GLU 32 n 32 GLU 32 A PRO 33 n 33 PRO 33 A ASP 34 n 34 ASP 34 A ASP 35 n 35 ASP 35 A VAL 36 n 36 VAL 36 A PRO 37 n 37 PRO 37 A LYS 38 n 38 LYS 38 A ARG 39 n 39 ARG 39 A TYR 40 n 40 TYR 40 A CYS 41 n 41 CYS 41 A ALA 42 n 42 ALA 42 A ALA 43 n 43 ALA 43 A LEU 44 n 44 LEU 44 A ALA 45 n 45 ALA 45 A ALA 46 n 46 ALA 46 A GLY 47 n 47 GLY 47 A THR 48 n 48 THR 48 A ALA 49 n 49 ALA 49 A SER 50 n 50 SER 50 A GLY 51 n 51 GLY 51 A LYS 52 n 52 LYS 52 A LEU 53 n 53 LEU 53 A LYS 54 n 54 LYS 54 A GLU 55 n 55 GLU 55 A ALA 56 n 56 ALA 56 A LEU 57 n 57 LEU 57 A TYR 58 n 58 TYR 58 A HIS 59 n 59 HIS 59 A TYR 60 n 60 TYR 60 A ASP 61 n 61 ASP 61 A PRO 62 n 62 PRO 62 A LYS 63 n 63 LYS 63 A THR 64 n 64 THR 64 A GLN 65 n 65 GLN 65 A ASP 66 n 66 ASP 66 A THR 67 n 67 THR 67 A PHE 68 n 68 PHE 68 A TYR 69 n 69 TYR 69 A ASP 70 n 70 ASP 70 A VAL 71 n 71 VAL 71 A SER 72 n 72 SER 72 A GLU 73 n 73 GLU 73 A LEU 74 n 74 LEU 74 A GLN 75 n 75 GLN 75 A VAL 76 n 76 VAL 76 A GLU 77 n 77 GLU 77 A SER 78 n 78 SER 78 A LEU 79 n 79 LEU 79 A GLY 80 n 80 GLY 80 A LYS 81 n 81 LYS 81 A TYR 82 n 82 TYR 82 A THR 83 n 83 THR 83 A ALA 84 n 84 ALA 84 A ASN 85 n 85 ASN 85 A PHE 86 n 86 PHE 86 A LYS 87 n 87 LYS 87 A LYS 88 n 88 LYS 88 A VAL 89 n 89 VAL 89 A ASP 90 n 90 ASP 90 A LYS 91 n 91 LYS 91 A ASN 92 n 92 ASN 92 A GLY 93 n 93 GLY 93 A ASN 94 n 94 ASN 94 A VAL 95 n 95 VAL 95 A LYS 96 n 96 LYS 96 A VAL 97 n 97 VAL 97 A ALA 98 n 98 ALA 98 A VAL 99 n 99 VAL 99 A THR 100 n 100 THR 100 A ALA 101 n 101 ALA 101 A GLY 102 n 102 GLY 102 A ASN 103 n 103 ASN 103 A TYR 104 n 104 TYR 104 A TYR 105 n 105 TYR 105 A THR 106 n 106 THR 106 A PHE 107 n 107 PHE 107 A THR 108 n 108 THR 108 A VAL 109 n 109 VAL 109 A MET 110 n 110 MET 110 A TYR 111 n 111 TYR 111 A ALA 112 n 112 ALA 112 A ASP 113 n 113 ASP 113 A ASP 114 n 114 ASP 114 A SER 115 n 115 SER 115 A SER 116 n 116 SER 116 A ALA 117 n 117 ALA 117 A LEU 118 n 118 LEU 118 A ILE 119 n 119 ILE 119 A HIS 120 n 120 HIS 120 A THR 121 n 121 THR 121 A CYS 122 n 122 CYS 122 A LEU 123 n 123 LEU 123 A HIS 124 n 124 HIS 124 A LYS 125 n 125 LYS 125 A GLY 126 n 126 GLY 126 A ASN 127 n 127 ASN 127 A LYS 128 n 128 LYS 128 A ASP 129 n 129 ASP 129 A LEU 130 n 130 LEU 130 A GLY 131 n 131 GLY 131 A ASP 132 n 132 ASP 132 A LEU 133 n 133 LEU 133 A TYR 134 n 134 TYR 134 A ALA 135 n 135 ALA 135 A VAL 136 n 136 VAL 136 A LEU 137 n 137 LEU 137 A ASN 138 n 138 ASN 138 A ARG 139 n 139 ARG 139 A ASN 140 n 140 ASN 140 A LYS 141 n 141 LYS 141 A ASP 142 n 142 ASP 142 A ALA 143 n 143 ALA 143 A ALA 144 n 144 ALA 144 A ALA 145 n 145 ALA 145 A GLY 146 n 146 GLY 146 A ASP 147 n 147 ASP 147 A LYS 148 n 148 LYS 148 A VAL 149 n 149 VAL 149 A LYS 150 n 150 LYS 150 A SER 151 n 151 SER 151 A ALA 152 n 152 ALA 152 A VAL 153 n 153 VAL 153 A SER 154 n 154 SER 154 A ALA 155 n 155 ALA 155 A ALA 156 n 156 ALA 156 A THR 157 n 157 THR 157 A LEU 158 n 158 LEU 158 A GLU 159 n 159 GLU 159 A PHE 160 n 160 PHE 160 A SER 161 n 161 SER 161 A LYS 162 n 162 LYS 162 A PHE 163 n 163 PHE 163 A ILE 164 n 164 ILE 164 A SER 165 n 165 SER 165 A THR 166 n 166 THR 166 A LYS 167 n 167 LYS 167 A GLU 168 n 168 GLU 168 A ASN 169 n 169 ASN 169 A ASN 170 n 170 ASN 170 A CYS 171 n 171 CYS 171 A ALA 172 n 172 ALA 172 A TYR 173 n 173 TYR 173 A ASP 174 n 174 ASP 174 A ASN 175 n 175 ASN 175 A ASP 176 n 176 ASP 176 A SER 177 n 177 SER 177 A LEU 178 n 178 LEU 178 A LYS 179 n 179 LYS 179 A SER 180 n 180 SER 180 A LEU 181 n 181 LEU 181 A LEU 182 n 182 LEU 182 A THR 183 n 183 THR 183 A LYS 184 n 184 LYS 184 A author_defined_assembly 1 monomeric A HIS 59 A NE2 HIS 59 1_555 A HEV 185 C FE HEV 1_555 A HEV 185 C NA HEV 1_555 87.5 A HIS 59 A NE2 HIS 59 1_555 A HEV 185 C FE HEV 1_555 A HEV 185 C NB HEV 1_555 82.6 A HEV 185 C NA HEV 1_555 A HEV 185 C FE HEV 1_555 A HEV 185 C NB HEV 1_555 90.9 A HIS 59 A NE2 HIS 59 1_555 A HEV 185 C FE HEV 1_555 A HEV 185 C NC HEV 1_555 95.0 A HEV 185 C NA HEV 1_555 A HEV 185 C FE HEV 1_555 A HEV 185 C NC HEV 1_555 177.5 A HEV 185 C NB HEV 1_555 A HEV 185 C FE HEV 1_555 A HEV 185 C NC HEV 1_555 89.3 A HIS 59 A NE2 HIS 59 1_555 A HEV 185 C FE HEV 1_555 A HEV 185 C ND HEV 1_555 98.9 A HEV 185 C NA HEV 1_555 A HEV 185 C FE HEV 1_555 A HEV 185 C ND HEV 1_555 91.7 A HEV 185 C NB HEV 1_555 A HEV 185 C FE HEV 1_555 A HEV 185 C ND HEV 1_555 177.0 A HEV 185 C NC HEV 1_555 A HEV 185 C FE HEV 1_555 A HEV 185 C ND HEV 1_555 88.0 A HIS 59 A NE2 HIS 59 1_555 A HEV 185 C FE HEV 1_555 A CYN 186 B C CYN 1_555 172.7 A HEV 185 C NA HEV 1_555 A HEV 185 C FE HEV 1_555 A CYN 186 B C CYN 1_555 98.9 A HEV 185 C NB HEV 1_555 A HEV 185 C FE HEV 1_555 A CYN 186 B C CYN 1_555 93.6 A HEV 185 C NC HEV 1_555 A HEV 185 C FE HEV 1_555 A CYN 186 B C CYN 1_555 78.6 A HEV 185 C ND HEV 1_555 A HEV 185 C FE HEV 1_555 A CYN 186 B C CYN 1_555 84.6 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 A N LEU 29 A N LEU 29 A O TYR 134 A O TYR 134 A N LEU 137 A N LEU 137 A O ALA 117 A O ALA 117 A N HIS 124 A N HIS 124 A O TYR 104 A O TYR 104 A N PHE 107 A N PHE 107 A O TYR 82 A O TYR 82 A N VAL 89 A N VAL 89 A O TYR 69 A O TYR 69 A N LEU 74 A N LEU 74 A O LEU 53 A O LEU 53 A N TYR 60 A N TYR 60 A O CYS 41 A O CYS 41 A O ALA 46 A O ALA 46 A N GLY 20 A N GLY 20 A O LYS 88 A O LYS 88 A N LYS 96 A N LYS 96 1 A HOH 198 E HOH 1 A HOH 333 E HOH 1 -3.77 0.60 121.00 117.23 A A A CB CG CD2 TYR TYR TYR 82 82 82 N 1 3.74 0.60 121.00 124.74 A A A CB CG CD2 TYR TYR TYR 111 111 111 N 1 A A CB CG PHE PHE 107 107 -0.107 0.017 1.509 1.402 B N 1 A ASP 34 -103.94 -144.55 1 A ASP 35 -97.47 45.12 1 A VAL 36 -28.99 142.05 1 A PRO 37 -66.10 85.93 0.26 0.2 0.2 0.2 1.6 11.0 926 19393 18061 random 1 0.0 0.0 Engh & Huber 1.6 11.0 200 1688 60 0 1428 0.01 0.035 13.3 1.6 11.0 1EQD 32484 31409 0.0 0.0 0.05 1 11.5 1.65 87 0.16 1.6 1.7 1 1.5 76 data collection MADNESS data scaling SCALA model building X-PLOR refinement SHELXL-97 data reduction MADNESS data scaling CCP4 (SCALA) phasing X-PLOR NITROPHORIN 4 CRYSTAL STRUCTURE OF NITROPHORIN 4 COMPLEXED WITH CN 1 N N 2 N N 3 N N 4 N N 5 N N A ASN 13 A ASN 13 HELX_P A PHE 18 A PHE 18 1 1 6 A GLY 146 A GLY 146 HELX_P A ALA 156 A ALA 156 1 2 11 A GLU 159 A GLU 159 HELX_P A PHE 163 A PHE 163 5 3 5 A LYS 167 A LYS 167 HELX_P A ASN 170 A ASN 170 5 4 4 A ASP 174 A ASP 174 HELX_P A LEU 182 A LEU 182 1 5 9 disulf 2.042 A CYS 2 A SG CYS 2 1_555 A CYS 122 A SG CYS 122 1_555 disulf 2.009 A CYS 41 A SG CYS 41 1_555 A CYS 171 A SG CYS 171 1_555 metalc 1.949 A HIS 59 A NE2 HIS 59 1_555 A HEV 185 C FE HEV 1_555 metalc 1.929 A CYN 186 B C CYN 1_555 A HEV 185 C FE HEV 1_555 SIGNALING PROTEIN beta barrel, lipocalin fold, ferric heme, cyanide, SIGNALING PROTEIN NP4_RHOPR UNP 1 22 Q94734 ACTKNAIAQTGFNKDKYFNGDVWYVTDYLDLEPDDVPKRYCAALAAGTASGKLKEALYHYDPKTQDTFYDVSELQVESLG KYTANFKKVDKNGNVKVAVTAGNYYTFTVMYADDSSALIHTCLHKGNKDLGDLYAVLNRNKDAAAGDKVKSAVSAATLEF SKFISTKENNCAYDNDSLKSLLTK 22 205 1EQD 1 184 Q94734 A 1 1 184 9 anti-parallel anti-parallel anti-parallel anti-parallel anti-parallel anti-parallel anti-parallel anti-parallel anti-parallel A ASN 19 A ASN 19 A ASP 30 A ASP 30 A ASP 132 A ASP 132 A ASN 138 A ASN 138 A SER 116 A SER 116 A HIS 124 A HIS 124 A TYR 104 A TYR 104 A ALA 112 A ALA 112 A LYS 81 A LYS 81 A VAL 89 A VAL 89 A THR 67 A THR 67 A SER 78 A SER 78 A LYS 52 A LYS 52 A TYR 60 A TYR 60 A CYS 41 A CYS 41 A ALA 49 A ALA 49 A ASN 19 A ASN 19 A ASP 30 A ASP 30 A LYS 81 A LYS 81 A VAL 89 A VAL 89 A VAL 95 A VAL 95 A VAL 97 A VAL 97 BINDING SITE FOR RESIDUE CYN A 186 Software 3 BINDING SITE FOR RESIDUE HEV A 185 Software 19 BINDING SITE FOR RESIDUE CIT A 187 Software 13 A HEV 185 C HEV 3 1_555 A HOH 216 E HOH 3 1_555 A HOH 301 E HOH 3 1_555 A VAL 25 A VAL 25 19 1_555 A TYR 28 A TYR 28 19 1_555 A TYR 40 A TYR 40 19 1_555 A ALA 42 A ALA 42 19 1_555 A LEU 44 A LEU 44 19 1_555 A LEU 57 A LEU 57 19 1_555 A HIS 59 A HIS 59 19 1_555 A PHE 68 A PHE 68 19 1_555 A ASP 70 A ASP 70 19 1_555 A PHE 86 A PHE 86 19 1_555 A LYS 88 A LYS 88 19 1_555 A TYR 105 A TYR 105 19 1_555 A PHE 107 A PHE 107 19 1_555 A LEU 123 A LEU 123 19 1_555 A LYS 125 A LYS 125 19 1_555 A LYS 128 A LYS 128 19 1_555 A LEU 133 A LEU 133 19 1_555 A CYN 186 B CYN 19 1_555 A HOH 287 E HOH 19 1_555 A GLU 77 A GLU 77 13 1_555 A GLU 77 A GLU 77 13 2_556 A LYS 81 A LYS 81 13 2_556 A THR 83 A THR 83 13 2_556 A THR 83 A THR 83 13 1_555 A THR 106 A THR 106 13 2_556 A THR 106 A THR 106 13 1_555 A HOH 190 E HOH 13 1_555 A HOH 190 E HOH 13 2_556 A HOH 201 E HOH 13 2_556 A HOH 244 E HOH 13 2_556 A HOH 270 E HOH 13 1_555 A HOH 270 E HOH 13 2_556 5 C 1 2 1