1A4I - Sequence, Chains, Asymmetric and Biological Units

• Title: HUMAN TETRAHYDROFOLATE DEHYDROGENASE / CYCLOHYDROLASE
• Keywords: THF, BIFUNCTIONAL, DEHYDROGENASE, CYCLOHYDROLASE, FOLATE, OXIDOREDUCTASE
• Experiment: X-ray diffraction
• Number of Models: 1

Database	ID code	Status	Coordinate files
			Header	Asymmetric unit	Biological unit
PDB	1A4I	released	available	available	Quaternary Structure Server

Asymmetric unit from PDB

Unit	Type	Name	Chain ID	Residues	Atoms	Hetatoms
1	Protein	METHYLENETETRAHYDROFOLATE DEHYDROGENASE / METHENYLTETRAHYDROFOLATE CYCLOHYDROLASE	A	285	2159	0
2	Protein	METHYLENETETRAHYDROFOLATE DEHYDROGENASE / METHENYLTETRAHYDROFOLATE CYCLOHYDROLASE	B	295	2237	0
3	Ligand	METHYLENETETRAHYDROFOLATE DEHYDROGENASE / METHENYLTETRAHYDROFOLATE CYCLOHYDROLASE	A	1	0	48
4	Ligand	METHYLENETETRAHYDROFOLATE DEHYDROGENASE / METHENYLTETRAHYDROFOLATE CYCLOHYDROLASE	B	1	0	48
5	Water			407	0	407
total				989	4396	503

Proteins

Unit 1

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

Unit 2

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

Ligands

Unit 3	NDP 302
Unit 4	NDP 302