2CEX - Sequence, Chains, Asymmetric and Biological Units

• Title: STRUCTURE OF A SIALIC ACID BINDING PROTEIN (SIAP) IN THE PRE THE SIALIC ACID ACID ANALOGUE NEU5AC2EN
• Keywords: ESR, PERIPLASMIC BINDING PROTEIN, TRIPARTITE ATP-INDEPENDENT PERIPLASMIC (TRAP)TRANSPORT, VIRULENCE FACTOR, TRANSPORT, PERIPLASMIC
• Experiment: X-ray diffraction
• Number of Models: 1

Database	ID code	Status	Coordinate files
			Header	Asymmetric unit	Biological unit
PDB	2CEX	released	available	available	Quaternary Structure Server

Asymmetric unit from PDB

Unit	Type	Name	Chain ID	Residues	Atoms	Hetatoms
1	Protein	PROTEIN HI0146	A	304	2362	0
2	Protein	PROTEIN HI0146	B	305	2404	0
3	Protein	PROTEIN HI0146	C	300	2348	0
4	Protein	PROTEIN HI0146	D	305	2401	0
5	Ligand	PROTEIN HI0146	A	1	0	1
6	Ligand	PROTEIN HI0146	B	5	0	34
7	Ligand	PROTEIN HI0146	C	2	0	2
8	Ligand	PROTEIN HI0146	D	2	0	7
9	Water			455	0	455
total				1679	9515	499

Proteins

Unit 1	ASP 2 TYR 3 ASP 4 LEU 5 LYS 6 PHE 7 GLY 8 MET 9 ASN 10 ALA 11 GLY 12 THR 13 SER 14 SER 15 ASN 16 GLU 17 TYR 18 LYS 19 ALA 20 ALA 21 GLU 22 MET 23 PHE 24 ALA 25 LYS 26 GLU 27 VAL 28 LYS 29 GLU 30 LYS 31 SER 32 GLN 33 GLY 34 LYS 35 ILE 36 GLU 37 ILE 38 SER 39 LEU 40 TYR 41 PRO 42 SER 43 SER 44 GLN 45 LEU 46 GLY 47 ASP 48 ASP 49 ARG 50 ALA 51 MET 52 LEU 53 LYS 54 GLN 55 LEU 56 LYS 57 ASP 58 GLY 59 SER 60 LEU 61 ASP 62 PHE 63 THR 64 PHE 65 ALA 66 GLU 67 SER 68 ALA 69 ARG 70 PHE 71 GLN 72 LEU 73 PHE 74 TYR 75 PRO 76 GLU 77 ALA 78 ALA 79 VAL 80 PHE 81 ALA 82 LEU 83 PRO 84 TYR 85 VAL 86 ILE 87 SER 88 ASN 89 TYR 90 ASN 91 VAL 92 ALA 93 GLN 94 LYS 95 ALA 96 LEU 97 PHE 98 ASP 99 THR 100 GLU 101 PHE 102 GLY 103 LYS 104 ASP 105 LEU 106 ILE 107 LYS 108 LYS 109 MET 110 ASP 111 LYS 112 ASP 113 LEU 114 GLY 115 VAL 116 THR 117 LEU 118 LEU 119 SER 120 GLN 121 ALA 122 TYR 123 ASN 124 GLY 125 THR 126 ARG 127 GLN 128 THR 129 THR 130 SER 131 ASN 132 ARG 133 ALA 134 ILE 135 ASN 136 SER 137 ILE 138 ALA 139 ASP 140 MET 141 LYS 142 GLY 143 LEU 144 LYS 145 LEU 146 ARG 147 VAL 148 PRO 149 ASN 150 ALA 151 ALA 152 THR 153 ASN 154 LEU 155 ALA 156 TYR 157 ALA 158 LYS 159 TYR 160 VAL 161 GLY 162 ALA 163 SER 164 PRO 165 THR 166 PRO 167 MET 168 ALA 169 PHE 170 SER 171 GLU 172 VAL 173 TYR 174 LEU 175 ALA 176 LEU 177 GLN 178 THR 179 ASN 180 ALA 181 VAL 182 ASP 183 GLY 184 GLN 185 GLU 186 ASN 187 PRO 188 LEU 189 ALA 190 ALA 191 VAL 192 GLN 193 ALA 194 GLN 195 LYS 196 PHE 197 TYR 198 GLU 199 VAL 200 GLN 201 LYS 202 PHE 203 LEU 204 ALA 205 MET 206 THR 207 ASN 208 HIS 209 ILE 210 LEU 211 ASN 212 ASP 213 GLN 214 LEU 215 TYR 216 LEU 217 VAL 218 SER 219 ASN 220 GLU 221 THR 222 TYR 223 LYS 224 GLU 225 LEU 226 PRO 227 GLU 228 ASP 229 LEU 230 GLN 231 LYS 232 VAL 233 VAL 234 LYS 235 ASP 236 ALA 237 ALA 238 GLU 239 ASN 240 ALA 241 ALA 242 LYS 243 TYR 244 HIS 245 THR 246 LYS 247 LEU 248 PHE 249 VAL 250 ASP 251 GLY 252 GLU 253 LYS 254 ASP 255 LEU 256 VAL 257 THR 258 PHE 259 PHE 260 GLU 261 LYS 262 GLN 263 GLY 264 VAL 265 LYS 266 ILE 267 THR 268 HIS 269 PRO 270 ASP 271 LEU 272 VAL 273 PRO 274 PHE 275 LYS 276 GLU 277 SER 278 MET 279 LYS 280 PRO 281 TYR 282 TYR 283 ALA 284 GLU 285 PHE 286 VAL 287 LYS 288 GLN 289 THR 290 GLY 291 GLN 292 LYS 293 GLY 294 GLU 295 SER 296 ALA 297 LEU 298 LYS 299 GLN 300 ILE 301 GLU 302 ALA 303 ILE 304 ASN 305
Unit 2	ASP 2 TYR 3 ASP 4 LEU 5 LYS 6 PHE 7 GLY 8 MET 9 ASN 10 ALA 11 GLY 12 THR 13 SER 14 SER 15 ASN 16 GLU 17 TYR 18 LYS 19 ALA 20 ALA 21 GLU 22 MET 23 PHE 24 ALA 25 LYS 26 GLU 27 VAL 28 LYS 29 GLU 30 LYS 31 SER 32 GLN 33 GLY 34 LYS 35 ILE 36 GLU 37 ILE 38 SER 39 LEU 40 TYR 41 PRO 42 SER 43 SER 44 GLN 45 LEU 46 GLY 47 ASP 48 ASP 49 ARG 50 ALA 51 MET 52 LEU 53 LYS 54 GLN 55 LEU 56 LYS 57 ASP 58 GLY 59 SER 60 LEU 61 ASP 62 PHE 63 THR 64 PHE 65 ALA 66 GLU 67 SER 68 ALA 69 ARG 70 PHE 71 GLN 72 LEU 73 PHE 74 TYR 75 PRO 76 GLU 77 ALA 78 ALA 79 VAL 80 PHE 81 ALA 82 LEU 83 PRO 84 TYR 85 VAL 86 ILE 87 SER 88 ASN 89 TYR 90 ASN 91 VAL 92 ALA 93 GLN 94 LYS 95 ALA 96 LEU 97 PHE 98 ASP 99 THR 100 GLU 101 PHE 102 GLY 103 LYS 104 ASP 105 LEU 106 ILE 107 LYS 108 LYS 109 MET 110 ASP 111 LYS 112 ASP 113 LEU 114 GLY 115 VAL 116 THR 117 LEU 118 LEU 119 SER 120 GLN 121 ALA 122 TYR 123 ASN 124 GLY 125 THR 126 ARG 127 GLN 128 THR 129 THR 130 SER 131 ASN 132 ARG 133 ALA 134 ILE 135 ASN 136 SER 137 ILE 138 ALA 139 ASP 140 MET 141 LYS 142 GLY 143 LEU 144 LYS 145 LEU 146 ARG 147 VAL 148 PRO 149 ASN 150 ALA 151 ALA 152 THR 153 ASN 154 LEU 155 ALA 156 TYR 157 ALA 158 LYS 159 TYR 160 VAL 161 GLY 162 ALA 163 SER 164 PRO 165 THR 166 PRO 167 MET 168 ALA 169 PHE 170 SER 171 GLU 172 VAL 173 TYR 174 LEU 175 ALA 176 LEU 177 GLN 178 THR 179 ASN 180 ALA 181 VAL 182 ASP 183 GLY 184 GLN 185 GLU 186 ASN 187 PRO 188 LEU 189 ALA 190 ALA 191 VAL 192 GLN 193 ALA 194 GLN 195 LYS 196 PHE 197 TYR 198 GLU 199 VAL 200 GLN 201 LYS 202 PHE 203 LEU 204 ALA 205 MET 206 THR 207 ASN 208 HIS 209 ILE 210 LEU 211 ASN 212 ASP 213 GLN 214 LEU 215 TYR 216 LEU 217 VAL 218 SER 219 ASN 220 GLU 221 THR 222 TYR 223 LYS 224 GLU 225 LEU 226 PRO 227 GLU 228 ASP 229 LEU 230 GLN 231 LYS 232 VAL 233 VAL 234 LYS 235 ASP 236 ALA 237 ALA 238 GLU 239 ASN 240 ALA 241 ALA 242 LYS 243 TYR 244 HIS 245 THR 246 LYS 247 LEU 248 PHE 249 VAL 250 ASP 251 GLY 252 GLU 253 LYS 254 ASP 255 LEU 256 VAL 257 THR 258 PHE 259 PHE 260 GLU 261 LYS 262 GLN 263 GLY 264 VAL 265 LYS 266 ILE 267 THR 268 HIS 269 PRO 270 ASP 271 LEU 272 VAL 273 PRO 274 PHE 275 LYS 276 GLU 277 SER 278 MET 279 LYS 280 PRO 281 TYR 282 TYR 283 ALA 284 GLU 285 PHE 286 VAL 287 LYS 288 GLN 289 THR 290 GLY 291 GLN 292 LYS 293 GLY 294 GLU 295 SER 296 ALA 297 LEU 298 LYS 299 GLN 300 ILE 301 GLU 302 ALA 303 ILE 304 ASN 305 PRO 306
Unit 3	ASP 2 TYR 3 ASP 4 LEU 5 LYS 6 PHE 7 GLY 8 MET 9 ASN 10 ALA 11 GLY 12 THR 13 SER 14 SER 15 ASN 16 GLU 17 TYR 18 LYS 19 ALA 20 ALA 21 GLU 22 MET 23 PHE 24 ALA 25 LYS 26 GLU 27 VAL 28 LYS 29 GLU 30 LYS 31 ILE 36 GLU 37 ILE 38 SER 39 LEU 40 TYR 41 PRO 42 SER 43 SER 44 GLN 45 LEU 46 GLY 47 ASP 48 ASP 49 ARG 50 ALA 51 MET 52 LEU 53 LYS 54 GLN 55 LEU 56 LYS 57 ASP 58 GLY 59 SER 60 LEU 61 ASP 62 PHE 63 THR 64 PHE 65 ALA 66 GLU 67 SER 68 ALA 69 ARG 70 PHE 71 GLN 72 LEU 73 PHE 74 TYR 75 PRO 76 GLU 77 ALA 78 ALA 79 VAL 80 PHE 81 ALA 82 LEU 83 PRO 84 TYR 85 VAL 86 ILE 87 SER 88 ASN 89 TYR 90 ASN 91 VAL 92 ALA 93 GLN 94 LYS 95 ALA 96 LEU 97 PHE 98 ASP 99 THR 100 GLU 101 PHE 102 GLY 103 LYS 104 ASP 105 LEU 106 ILE 107 LYS 108 LYS 109 MET 110 ASP 111 LYS 112 ASP 113 LEU 114 GLY 115 VAL 116 THR 117 LEU 118 LEU 119 SER 120 GLN 121 ALA 122 TYR 123 ASN 124 GLY 125 THR 126 ARG 127 GLN 128 THR 129 THR 130 SER 131 ASN 132 ARG 133 ALA 134 ILE 135 ASN 136 SER 137 ILE 138 ALA 139 ASP 140 MET 141 LYS 142 GLY 143 LEU 144 LYS 145 LEU 146 ARG 147 VAL 148 PRO 149 ASN 150 ALA 151 ALA 152 THR 153 ASN 154 LEU 155 ALA 156 TYR 157 ALA 158 LYS 159 TYR 160 VAL 161 GLY 162 ALA 163 SER 164 PRO 165 THR 166 PRO 167 MET 168 ALA 169 PHE 170 SER 171 GLU 172 VAL 173 TYR 174 LEU 175 ALA 176 LEU 177 GLN 178 THR 179 ASN 180 ALA 181 VAL 182 ASP 183 GLY 184 GLN 185 GLU 186 ASN 187 PRO 188 LEU 189 ALA 190 ALA 191 VAL 192 GLN 193 ALA 194 GLN 195 LYS 196 PHE 197 TYR 198 GLU 199 VAL 200 GLN 201 LYS 202 PHE 203 LEU 204 ALA 205 MET 206 THR 207 ASN 208 HIS 209 ILE 210 LEU 211 ASN 212 ASP 213 GLN 214 LEU 215 TYR 216 LEU 217 VAL 218 SER 219 ASN 220 GLU 221 THR 222 TYR 223 LYS 224 GLU 225 LEU 226 PRO 227 GLU 228 ASP 229 LEU 230 GLN 231 LYS 232 VAL 233 VAL 234 LYS 235 ASP 236 ALA 237 ALA 238 GLU 239 ASN 240 ALA 241 ALA 242 LYS 243 TYR 244 HIS 245 THR 246 LYS 247 LEU 248 PHE 249 VAL 250 ASP 251 GLY 252 GLU 253 LYS 254 ASP 255 LEU 256 VAL 257 THR 258 PHE 259 PHE 260 GLU 261 LYS 262 GLN 263 GLY 264 VAL 265 LYS 266 ILE 267 THR 268 HIS 269 PRO 270 ASP 271 LEU 272 VAL 273 PRO 274 PHE 275 LYS 276 GLU 277 SER 278 MET 279 LYS 280 PRO 281 TYR 282 TYR 283 ALA 284 GLU 285 PHE 286 VAL 287 LYS 288 GLN 289 THR 290 GLY 291 GLN 292 LYS 293 GLY 294 GLU 295 SER 296 ALA 297 LEU 298 LYS 299 GLN 300 ILE 301 GLU 302 ALA 303 ILE 304 ASN 305
Unit 4	ALA 1 ASP 2 TYR 3 ASP 4 LEU 5 LYS 6 PHE 7 GLY 8 MET 9 ASN 10 ALA 11 GLY 12 THR 13 SER 14 SER 15 ASN 16 GLU 17 TYR 18 LYS 19 ALA 20 ALA 21 GLU 22 MET 23 PHE 24 ALA 25 LYS 26 GLU 27 VAL 28 LYS 29 GLU 30 LYS 31 SER 32 GLN 33 GLY 34 LYS 35 ILE 36 GLU 37 ILE 38 SER 39 LEU 40 TYR 41 PRO 42 SER 43 SER 44 GLN 45 LEU 46 GLY 47 ASP 48 ASP 49 ARG 50 ALA 51 MET 52 LEU 53 LYS 54 GLN 55 LEU 56 LYS 57 ASP 58 GLY 59 SER 60 LEU 61 ASP 62 PHE 63 THR 64 PHE 65 ALA 66 GLU 67 SER 68 ALA 69 ARG 70 PHE 71 GLN 72 LEU 73 PHE 74 TYR 75 PRO 76 GLU 77 ALA 78 ALA 79 VAL 80 PHE 81 ALA 82 LEU 83 PRO 84 TYR 85 VAL 86 ILE 87 SER 88 ASN 89 TYR 90 ASN 91 VAL 92 ALA 93 GLN 94 LYS 95 ALA 96 LEU 97 PHE 98 ASP 99 THR 100 GLU 101 PHE 102 GLY 103 LYS 104 ASP 105 LEU 106 ILE 107 LYS 108 LYS 109 MET 110 ASP 111 LYS 112 ASP 113 LEU 114 GLY 115 VAL 116 THR 117 LEU 118 LEU 119 SER 120 GLN 121 ALA 122 TYR 123 ASN 124 GLY 125 THR 126 ARG 127 GLN 128 THR 129 THR 130 SER 131 ASN 132 ARG 133 ALA 134 ILE 135 ASN 136 SER 137 ILE 138 ALA 139 ASP 140 MET 141 LYS 142 GLY 143 LEU 144 LYS 145 LEU 146 ARG 147 VAL 148 PRO 149 ASN 150 ALA 151 ALA 152 THR 153 ASN 154 LEU 155 ALA 156 TYR 157 ALA 158 LYS 159 TYR 160 VAL 161 GLY 162 ALA 163 SER 164 PRO 165 THR 166 PRO 167 MET 168 ALA 169 PHE 170 SER 171 GLU 172 VAL 173 TYR 174 LEU 175 ALA 176 LEU 177 GLN 178 THR 179 ASN 180 ALA 181 VAL 182 ASP 183 GLY 184 GLN 185 GLU 186 ASN 187 PRO 188 LEU 189 ALA 190 ALA 191 VAL 192 GLN 193 ALA 194 GLN 195 LYS 196 PHE 197 TYR 198 GLU 199 VAL 200 GLN 201 LYS 202 PHE 203 LEU 204 ALA 205 MET 206 THR 207 ASN 208 HIS 209 ILE 210 LEU 211 ASN 212 ASP 213 GLN 214 LEU 215 TYR 216 LEU 217 VAL 218 SER 219 ASN 220 GLU 221 THR 222 TYR 223 LYS 224 GLU 225 LEU 226 PRO 227 GLU 228 ASP 229 LEU 230 GLN 231 LYS 232 VAL 233 VAL 234 LYS 235 ASP 236 ALA 237 ALA 238 GLU 239 ASN 240 ALA 241 ALA 242 LYS 243 TYR 244 HIS 245 THR 246 LYS 247 LEU 248 PHE 249 VAL 250 ASP 251 GLY 252 GLU 253 LYS 254 ASP 255 LEU 256 VAL 257 THR 258 PHE 259 PHE 260 GLU 261 LYS 262 GLN 263 GLY 264 VAL 265 LYS 266 ILE 267 THR 268 HIS 269 PRO 270 ASP 271 LEU 272 VAL 273 PRO 274 PHE 275 LYS 276 GLU 277 SER 278 MET 279 LYS 280 PRO 281 TYR 282 TYR 283 ALA 284 GLU 285 PHE 286 VAL 287 LYS 288 GLN 289 THR 290 GLY 291 GLN 292 LYS 293 GLY 294 GLU 295 SER 296 ALA 297 LEU 298 LYS 299 GLN 300 ILE 301 GLU 302 ALA 303 ILE 304 ASN 305

Ligands

Unit 5	ZN 1306
Unit 6	DAN 1307 GOL 1308 GOL 1309 ZN 1310 ZN 1311
Unit 7	ZN 1306 ZN 1307
Unit 8	GOL 1306 ZN 1307