1O23 - Sequence, Chains, Asymmetric and Biological Units

• Title: CRYSTAL STRUCTURE OF LACTOSE SYNTHASE IN THE PRESENCE OF UDP
• Keywords: ALPHA-LACTALBUMIN; BETA,1,4-GALACTOSYLTRANSFERASE; UDP-GLUCO TRANSFERASE ACTIVATOR-TRANSFERASE COMPLEX
• Experiment: X-ray diffraction
• Number of Models: 1

Database	ID code	Status	Coordinate files
			Header	Asymmetric unit	Biological unit
PDB	1O23	released	available	available	Quaternary Structure Server

Asymmetric unit from PDB

Unit	Type	Name	Chain ID	Residues	Atoms	Hetatoms
1	Protein	ALPHA-LACTALBUMIN	A	123	980	0
2	Protein	BETA-1,4-GALACTOSYLTRANSFERASE	B	272	2218	0
3	Protein	ALPHA-LACTALBUMIN	C	123	980	0
4	Protein	BETA-1,4-GALACTOSYLTRANSFERASE	D	272	2218	0
5	Ligand	ALPHA-LACTALBUMIN	A	3	0	26
6	Ligand	BETA-1,4-GALACTOSYLTRANSFERASE	B	3	0	62
7	Ligand	ALPHA-LACTALBUMIN	C	2	0	14
8	Ligand	BETA-1,4-GALACTOSYLTRANSFERASE	D	3	0	62
9	Water			412	0	412
total				1213	6396	576

Proteins

Unit 1	THR 1 GLU 2 LEU 3 THR 4 LYS 5 CYS 6 LYS 7 VAL 8 SER 9 HIS 10 ALA 11 ILE 12 LYS 13 ASP 14 ILE 15 ASP 16 GLY 17 TYR 18 GLN 19 GLY 20 ILE 21 SER 22 LEU 23 LEU 24 GLU 25 TRP 26 ALA 27 CYS 28 VAL 29 LEU 30 PHE 31 HIS 32 THR 33 SER 34 GLY 35 TYR 36 ASP 37 THR 38 GLN 39 ALA 40 VAL 41 VAL 42 ASN 43 ASP 44 ASN 45 GLY 46 SER 47 THR 48 GLU 49 TYR 50 GLY 51 LEU 52 PHE 53 GLN 54 ILE 55 SER 56 ASP 57 ARG 58 PHE 59 TRP 60 CYS 61 LYS 62 SER 63 SER 64 GLU 65 PHE 66 PRO 67 GLU 68 SER 69 GLU 70 ASN 71 ILE 72 CYS 73 GLY 74 ILE 75 SER 76 CYS 77 ASP 78 LYS 79 LEU 80 LEU 81 ASP 82 ASP 83 GLU 84 LEU 85 ASP 86 ASP 87 ASP 88 ILE 89 ALA 90 CYS 91 ALA 92 LYS 93 LYS 94 ILE 95 LEU 96 ALA 97 ILE 98 LYS 99 GLY 100 ILE 101 ASP 102 TYR 103 TRP 104 LYS 105 ALA 106 TYR 107 LYS 108 PRO 109 MET 110 CYS 111 SER 112 GLU 113 LYS 114 LEU 115 GLU 116 GLN 117 TRP 118 ARG 119 CYS 120 GLU 121 LYS 122 PRO 123
Unit 2	LEU 131 THR 132 ALA 133 CYS 134 PRO 135 GLU 136 GLU 137 SER 138 PRO 139 LEU 140 LEU 141 VAL 142 GLY 143 PRO 144 MET 145 LEU 146 ILE 147 GLU 148 PHE 149 ASN 150 ILE 151 PRO 152 VAL 153 ASP 154 LEU 155 LYS 156 LEU 157 VAL 158 GLU 159 GLN 160 GLN 161 ASN 162 PRO 163 LYS 164 VAL 165 LYS 166 LEU 167 GLY 168 GLY 169 ARG 170 TYR 171 THR 172 PRO 173 MET 174 ASP 175 CYS 176 ILE 177 SER 178 PRO 179 HIS 180 LYS 181 VAL 182 ALA 183 ILE 184 ILE 185 ILE 186 PRO 187 PHE 188 ARG 189 ASN 190 ARG 191 GLN 192 GLU 193 HIS 194 LEU 195 LYS 196 TYR 197 TRP 198 LEU 199 TYR 200 TYR 201 LEU 202 HIS 203 PRO 204 ILE 205 LEU 206 GLN 207 ARG 208 GLN 209 GLN 210 LEU 211 ASP 212 TYR 213 GLY 214 ILE 215 TYR 216 VAL 217 ILE 218 ASN 219 GLN 220 ALA 221 GLY 222 GLU 223 SER 224 MET 225 PHE 226 ASN 227 ARG 228 ALA 229 LYS 230 LEU 231 LEU 232 ASN 233 VAL 234 GLY 235 PHE 236 LYS 237 GLU 238 ALA 239 LEU 240 LYS 241 ASP 242 TYR 243 ASP 244 TYR 245 ASN 246 CYS 247 PHE 248 VAL 249 PHE 250 SER 251 ASP 252 VAL 253 ASP 254 LEU 255 ILE 256 PRO 257 MET 258 ASN 259 ASP 260 HIS 261 ASN 262 THR 263 TYR 264 ARG 265 CYS 266 PHE 267 SER 268 GLN 269 PRO 270 ARG 271 HIS 272 ILE 273 SER 274 VAL 275 ALA 276 MET 277 ASP 278 LYS 279 PHE 280 GLY 281 PHE 282 SER 283 LEU 284 PRO 285 TYR 286 VAL 287 GLN 288 TYR 289 PHE 290 GLY 291 GLY 292 VAL 293 SER 294 ALA 295 LEU 296 SER 297 LYS 298 GLN 299 GLN 300 PHE 301 LEU 302 SER 303 ILE 304 ASN 305 GLY 306 PHE 307 PRO 308 ASN 309 ASN 310 TYR 311 TRP 312 GLY 313 TRP 314 GLY 315 GLY 316 GLU 317 ASP 318 ASP 319 ASP 320 ILE 321 TYR 322 ASN 323 ARG 324 LEU 325 ALA 326 PHE 327 ARG 328 GLY 329 MET 330 SER 331 VAL 332 SER 333 ARG 334 PRO 335 ASN 336 ALA 337 VAL 338 ILE 339 GLY 340 LYS 341 CYS 342 ARG 343 MET 344 ILE 345 ARG 346 HIS 347 SER 348 ARG 349 ASP 350 LYS 351 LYS 352 ASN 353 GLU 354 PRO 355 ASN 356 PRO 357 GLN 358 ARG 359 PHE 360 ASP 361 ARG 362 ILE 363 ALA 364 HIS 365 THR 366 LYS 367 GLU 368 THR 369 MET 370 LEU 371 SER 372 ASP 373 GLY 374 LEU 375 ASN 376 SER 377 LEU 378 THR 379 TYR 380 MET 381 VAL 382 LEU 383 GLU 384 VAL 385 GLN 386 ARG 387 TYR 388 PRO 389 LEU 390 TYR 391 THR 392 LYS 393 ILE 394 THR 395 VAL 396 ASP 397 ILE 398 GLY 399 THR 400 PRO 401 SER 402
Unit 3	THR 403 GLU 404 LEU 405 THR 406 LYS 407 CYS 408 LYS 409 VAL 410 SER 411 HIS 412 ALA 413 ILE 414 LYS 415 ASP 416 ILE 417 ASP 418 GLY 419 TYR 420 GLN 421 GLY 422 ILE 423 SER 424 LEU 425 LEU 426 GLU 427 TRP 428 ALA 429 CYS 430 VAL 431 LEU 432 PHE 433 HIS 434 THR 435 SER 436 GLY 437 TYR 438 ASP 439 THR 440 GLN 441 ALA 442 VAL 443 VAL 444 ASN 445 ASP 446 ASN 447 GLY 448 SER 449 THR 450 GLU 451 TYR 452 GLY 453 LEU 454 PHE 455 GLN 456 ILE 457 SER 458 ASP 459 ARG 460 PHE 461 TRP 462 CYS 463 LYS 464 SER 465 SER 466 GLU 467 PHE 468 PRO 469 GLU 470 SER 471 GLU 472 ASN 473 ILE 474 CYS 475 GLY 476 ILE 477 SER 478 CYS 479 ASP 480 LYS 481 LEU 482 LEU 483 ASP 484 ASP 485 GLU 486 LEU 487 ASP 488 ASP 489 ASP 490 ILE 491 ALA 492 CYS 493 ALA 494 LYS 495 LYS 496 ILE 497 LEU 498 ALA 499 ILE 500 LYS 501 GLY 502 ILE 503 ASP 504 TYR 505 TRP 506 LYS 507 ALA 508 TYR 509 LYS 510 PRO 511 MET 512 CYS 513 SER 514 GLU 515 LYS 516 LEU 517 GLU 518 GLN 519 TRP 520 ARG 521 CYS 522 GLU 523 LYS 524 PRO 525
Unit 4	LEU 533 THR 534 ALA 535 CYS 536 PRO 537 GLU 538 GLU 539 SER 540 PRO 541 LEU 542 LEU 543 VAL 544 GLY 545 PRO 546 MET 547 LEU 548 ILE 549 GLU 550 PHE 551 ASN 552 ILE 553 PRO 554 VAL 555 ASP 556 LEU 557 LYS 558 LEU 559 VAL 560 GLU 561 GLN 562 GLN 563 ASN 564 PRO 565 LYS 566 VAL 567 LYS 568 LEU 569 GLY 570 GLY 571 ARG 572 TYR 573 THR 574 PRO 575 MET 576 ASP 577 CYS 578 ILE 579 SER 580 PRO 581 HIS 582 LYS 583 VAL 584 ALA 585 ILE 586 ILE 587 ILE 588 PRO 589 PHE 590 ARG 591 ASN 592 ARG 593 GLN 594 GLU 595 HIS 596 LEU 597 LYS 598 TYR 599 TRP 600 LEU 601 TYR 602 TYR 603 LEU 604 HIS 605 PRO 606 ILE 607 LEU 608 GLN 609 ARG 610 GLN 611 GLN 612 LEU 613 ASP 614 TYR 615 GLY 616 ILE 617 TYR 618 VAL 619 ILE 620 ASN 621 GLN 622 ALA 623 GLY 624 GLU 625 SER 626 MET 627 PHE 628 ASN 629 ARG 630 ALA 631 LYS 632 LEU 633 LEU 634 ASN 635 VAL 636 GLY 637 PHE 638 LYS 639 GLU 640 ALA 641 LEU 642 LYS 643 ASP 644 TYR 645 ASP 646 TYR 647 ASN 648 CYS 649 PHE 650 VAL 651 PHE 652 SER 653 ASP 654 VAL 655 ASP 656 LEU 657 ILE 658 PRO 659 MET 660 ASN 661 ASP 662 HIS 663 ASN 664 THR 665 TYR 666 ARG 667 CYS 668 PHE 669 SER 670 GLN 671 PRO 672 ARG 673 HIS 674 ILE 675 SER 676 VAL 677 ALA 678 MET 679 ASP 680 LYS 681 PHE 682 GLY 683 PHE 684 SER 685 LEU 686 PRO 687 TYR 688 VAL 689 GLN 690 TYR 691 PHE 692 GLY 693 GLY 694 VAL 695 SER 696 ALA 697 LEU 698 SER 699 LYS 700 GLN 701 GLN 702 PHE 703 LEU 704 SER 705 ILE 706 ASN 707 GLY 708 PHE 709 PRO 710 ASN 711 ASN 712 TYR 713 TRP 714 GLY 715 TRP 716 GLY 717 GLY 718 GLU 719 ASP 720 ASP 721 ASP 722 ILE 723 TYR 724 ASN 725 ARG 726 LEU 727 ALA 728 PHE 729 ARG 730 GLY 731 MET 732 SER 733 VAL 734 SER 735 ARG 736 PRO 737 ASN 738 ALA 739 VAL 740 ILE 741 GLY 742 LYS 743 CYS 744 ARG 745 MET 746 ILE 747 ARG 748 HIS 749 SER 750 ARG 751 ASP 752 LYS 753 LYS 754 ASN 755 GLU 756 PRO 757 ASN 758 PRO 759 GLN 760 ARG 761 PHE 762 ASP 763 ARG 764 ILE 765 ALA 766 HIS 767 THR 768 LYS 769 GLU 770 THR 771 MET 772 LEU 773 SER 774 ASP 775 GLY 776 LEU 777 ASN 778 SER 779 LEU 780 THR 781 TYR 782 MET 783 VAL 784 LEU 785 GLU 786 VAL 787 GLN 788 ARG 789 TYR 790 PRO 791 LEU 792 TYR 793 THR 794 LYS 795 ILE 796 THR 797 VAL 798 ASP 799 ILE 800 GLY 801 THR 802 PRO 803 SER 804

Ligands

Unit 5	CA 805 PG4 813 MES 815
Unit 6	MN 807 UPG 809 UDP 811
Unit 7	CA 806 PG4 814
Unit 8	MN 808 UPG 810 UDP 812