2Q3B - Sequence, Chains, Asymmetric and Biological Units

• Title: 1.8 A RESOLUTION CRYSTAL STRUCTURE OF O-ACETYLSERINE SULFHYD (OASS) HOLOENZYME FROM MYCOBACTERIUM TUBERCULOSIS
• Keywords: MYCOBACTERIUM TUBERCULOSIS, PYRIDOXAL-5'-PHOSPHATE, SULPHUR METABOLISM, CYSTEINE BIOSYNTHESIS, TRANSFERASE
• Experiment: X-ray diffraction
• Number of Models: 1

Database	ID code	Status	Coordinate files
			Header	Asymmetric unit	Biological unit
PDB	2Q3B	released	available	available	Quaternary Structure Server

Asymmetric unit from PDB

Unit	Type	Name	Chain ID	Residues	Atoms	Hetatoms
1	Protein	CYSTEINE SYNTHASE A	A	300	2218	24
2	Ligand	CYSTEINE SYNTHASE A	A	5	0	33
3	Water			203	0	203
total				508	2218	260

Proteins

Unit 1

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

Ligands

Unit 2

CL 400 MPD 401 MPD 402 MPD 403 MPD 404