2XWB: Complement C3b
Crystal Structure of Complement C3b in complex with Factors B and D. Determined by X-ray diffraction at 3.49 Å resolution. Released 12 Jan 2011.
- Method
- X-ray diffraction
- Resolution
- 3.49 Å
- Organism
- HOMO SAPIENS
- Chains
- 8
- Atoms
- 39,285
- Mol. weight
- 566.82 kDa
- Ligands
- MG, NAG
- Released
- 12 Jan 2011
Explore 2XWB in 3D
Show helices and sheets
RCSB PDB
PDBe
Secondary structure: helices and β-sheets
2XWB contains 168 α-helices and 360 β-strands across 8 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.
Chain A: 13 helices, 54 β-strands
| Element | Residues | Length | Sheet |
|---|
| β-strand | 3 | 1 | 1 |
| β-strand | 5-9 | 5 | 2 |
| β-strand | 11-13 | 3 | 3 |
| β-strand | 17-23 | 7 | 2 |
| β-strand | 25 | 1 | 1 |
| β-strand | 32-40 | 9 | 3 |
| β-strand | 48-53 | 6 | 3 |
| α-helix | 56-58 | 3 | |
| β-strand | 61-67 | 7 | 2 |
| β-strand | 82-90 | 9 | 3 |
| β-strand | 93-102 | 10 | 3 |
| β-strand | 107-112 | 6 | 4 |
| β-strand | 116-117 | 2 | 5 |
| β-strand | 122-130 | 9 | 4 |
| β-strand | 136 | 1 | 4 |
| β-strand | 140-146 | 7 | 5 |
| β-strand | 152-159 | 8 | 5 |
| β-strand | 166-172 | 7 | 4 |
| α-helix | 173-174 | 2 | |
| β-strand | 180-188 | 9 | 5 |
| β-strand | 196-202 | 7 | 5 |
| β-strand | 210-216 | 7 | 6 |
| β-strand | 229-237 | 9 | 6 |
| α-helix | 241 | 1 | |
| β-strand | 242 | 1 | 6 |
| α-helix | 243 | 1 | |
| β-strand | 245-254 | 10 | 7 |
| β-strand | 259-271 | 13 | 7 |
| β-strand | 272 | 1 | 6 |
| β-strand | 275-280 | 6 | 6 |
| α-helix | 282-288 | 7 | |
| β-strand | 298 | 1 | 8 |
| β-strand | 300 | 1 | 8 |
| β-strand | 301-310 | 10 | 7 |
| β-strand | 316-325 | 10 | 7 |
| β-strand | 332-334 | 3 | 9 |
| β-strand | 341-342 | 2 | 10 |
| β-strand | 348-355 | 8 | 9 |
| β-strand | 361 | 1 | 9 |
| β-strand | 367-369 | 3 | 11 |
| β-strand | 384-389 | 6 | 9 |
| α-helix | 397 | 1 | |
| β-strand | 398-404 | 7 | 11 |
| α-helix | 411-413 | 3 | |
| β-strand | 416-421 | 6 | 11 |
| β-strand | 422-423 | 2 | 10 |
| β-strand | 433-438 | 6 | 12 |
| β-strand | 443 | 1 | 13 |
| β-strand | 448-456 | 9 | 12 |
| α-helix | 462-464 | 3 | |
| β-strand | 467-474 | 8 | 14 |
| β-strand | 477-485 | 9 | 14 |
| β-strand | 492-498 | 7 | 12 |
| α-helix | 499 | 1 | |
| β-strand | 506-515 | 10 | 14 |
| β-strand | 523-532 | 10 | 14 |
| β-strand | 533 | 1 | 13 |
| β-strand | 542-545 | 4 | 15 |
| β-strand | 558-565 | 8 | 15 |
| β-strand | 570-572 | 3 | 16 |
| β-strand | 575-577 | 3 | 17 |
| α-helix | 578-581 | 4 | |
| α-helix | 591-599 | 9 | |
| α-helix | 613-620 | 8 | |
| β-strand | 622-626 | 5 | 2 |
| β-strand | 631 | 1 | 2 |
| α-helix | 632-634 | 3 | |
Chain B: 36 helices, 57 β-strands
| Element | Residues | Length | Sheet |
|---|
| β-strand | 742 | 1 | 18 |
| β-strand | 748-749 | 2 | 17 |
| β-strand | 753-755 | 3 | 16 |
| β-strand | 761 | 1 | 19 |
| β-strand | 764 | 1 | 19 |
| β-strand | 765-772 | 8 | 15 |
| β-strand | 779-782 | 4 | 17 |
| β-strand | 785-787 | 3 | 16 |
| β-strand | 793-795 | 3 | 16 |
| α-helix | 796-798 | 3 | |
| β-strand | 799-802 | 4 | 17 |
| β-strand | 807-812 | 6 | 20 |
| β-strand | 816-818 | 3 | 21 |
| β-strand | 823-831 | 9 | 20 |
| β-strand | 838-844 | 7 | 18 |
| α-helix | 845-846 | 2 | |
| β-strand | 861 | 1 | 18 |
| β-strand | 864-866 | 3 | 18 |
| β-strand | 870-878 | 9 | 20 |
| β-strand | 886-894 | 9 | 18 |
| β-strand | 900-907 | 8 | 18 |
| β-strand | 908-910 | 3 | 21 |
| α-helix | 911 | 1 | |
| β-strand | 914-921 | 8 | 22 |
| β-strand | 924-925 | 2 | 22 |
| β-strand | 932 | 1 | 23 |
| β-strand | 935-939 | 5 | 23 |
| α-helix | 941-943 | 3 | |
| β-strand | 948 | 1 | 22 |
| α-helix | 949 | 1 | |
| β-strand | 955-962 | 8 | 22 |
| β-strand | 966 | 1 | 24 |
| α-helix | 970-974 | 5 | |
| α-helix | 975-978 | 4 | |
| α-helix | 991-1009 | 19 | |
| α-helix | 1012-1015 | 4 | |
| α-helix | 1020-1035 | 16 | |
| β-strand | 1038 | 1 | 25 |
| β-strand | 1044 | 1 | 25 |
| α-helix | 1051-1052 | 2 | |
| α-helix | 1054-1064 | 11 | |
| α-helix | 1067-1069 | 3 | |
| α-helix | 1075-1083 | 9 | |
| α-helix | 1084-1088 | 5 | |
| α-helix | 1109-1111 | 3 | |
| α-helix | 1117-1130 | 14 | |
| α-helix | 1143-1154 | 12 | |
| α-helix | 1164-1175 | 12 | |
| α-helix | 1183-1190 | 8 | |
| β-strand | 1193 | 1 | 26 |
| β-strand | 1197 | 1 | 26 |
| α-helix | 1205-1221 | 17 | |
| α-helix | 1227-1235 | 9 | |
| α-helix | 1247-1260 | 14 | |
| β-strand | 1267 | 1 | 24 |
| β-strand | 1271-1277 | 7 | 23 |
| β-strand | 1285-1290 | 6 | 23 |
| β-strand | 1298-1302 | 5 | 22 |
| β-strand | 1309-1315 | 7 | 23 |
| β-strand | 1318-1328 | 11 | 22 |
| β-strand | 1339-1346 | 8 | 27 |
| β-strand | 1362-1370 | 9 | 27 |
| β-strand | 1376 | 1 | 28 |
| β-strand | 1379-1384 | 6 | 29 |
| β-strand | 1390-1391 | 2 | 27 |
| α-helix | 1393-1401 | 9 | |
| β-strand | 1405-1406 | 2 | 29 |
| α-helix | 1409-1412 | 4 | |
| α-helix | 1415-1417 | 3 | |
| β-strand | 1421-1423 | 3 | 29 |
| β-strand | 1425-1426 | 2 | 29 |
| β-strand | 1429 | 1 | 28 |
| β-strand | 1437-1442 | 6 | 27 |
| α-helix | 1450-1452 | 3 | |
| β-strand | 1453-1459 | 7 | 29 |
| β-strand | 1467-1471 | 5 | 29 |
| α-helix | 1476-1478 | 3 | |
| α-helix | 1479-1481 | 3 | |
| β-strand | 1482-1485 | 4 | 30 |
| β-strand | 1488-1491 | 4 | 30 |
| α-helix | 1507-1514 | 8 | |
| β-strand | 1519-1532 | 14 | 31 |
| β-strand | 1537-1548 | 12 | 31 |
| β-strand | 1559-1563 | 5 | 31 |
| α-helix | 1566-1568 | 3 | |
| α-helix | 1569-1572 | 4 | |
| β-strand | 1579-1585 | 7 | 31 |
| α-helix | 1586-1588 | 3 | |
| β-strand | 1598-1599 | 2 | 31 |
| β-strand | 1605-1608 | 4 | 31 |
| α-helix | 1612-1614 | 3 | |
| α-helix | 1621-1632 | 12 | |
| α-helix | 1633-1637 | 5 | |
Chain C: 15 helices, 53 β-strands
| Element | Residues | Length | Sheet |
|---|
| β-strand | 3 | 1 | 32 |
| β-strand | 5-9 | 5 | 33 |
| β-strand | 11-13 | 3 | 34 |
| β-strand | 17-23 | 7 | 33 |
| β-strand | 25 | 1 | 32 |
| β-strand | 32-40 | 9 | 34 |
| β-strand | 48-53 | 6 | 34 |
| α-helix | 56-58 | 3 | |
| β-strand | 61-67 | 7 | 33 |
| β-strand | 82-90 | 9 | 34 |
| β-strand | 93-102 | 10 | 34 |
| β-strand | 107-112 | 6 | 35 |
| β-strand | 116-117 | 2 | 36 |
| β-strand | 122-130 | 9 | 35 |
| β-strand | 136 | 1 | 35 |
| β-strand | 140-146 | 7 | 36 |
| β-strand | 152-159 | 8 | 36 |
| β-strand | 166-172 | 7 | 35 |
| α-helix | 173-174 | 2 | |
| β-strand | 180-188 | 9 | 36 |
| β-strand | 196-202 | 7 | 36 |
| β-strand | 210-216 | 7 | 37 |
| β-strand | 229-237 | 9 | 37 |
| α-helix | 241 | 1 | |
| β-strand | 242 | 1 | 37 |
| α-helix | 243 | 1 | |
| β-strand | 245-254 | 10 | 38 |
| β-strand | 259-271 | 13 | 38 |
| β-strand | 272 | 1 | 37 |
| β-strand | 275-280 | 6 | 37 |
| α-helix | 282-288 | 7 | |
| α-helix | 295-297 | 3 | |
| β-strand | 298 | 1 | 39 |
| β-strand | 300 | 1 | 39 |
| β-strand | 301-310 | 10 | 38 |
| β-strand | 316-325 | 10 | 38 |
| β-strand | 332-334 | 3 | 40 |
| β-strand | 341-342 | 2 | 41 |
| β-strand | 348-355 | 8 | 40 |
| β-strand | 361 | 1 | 40 |
| β-strand | 367-369 | 3 | 42 |
| β-strand | 384-389 | 6 | 40 |
| α-helix | 397 | 1 | |
| β-strand | 398-404 | 7 | 42 |
| α-helix | 411-413 | 3 | |
| β-strand | 416-421 | 6 | 42 |
| β-strand | 422-423 | 2 | 41 |
| β-strand | 433-438 | 6 | 43 |
| β-strand | 443 | 1 | 44 |
| β-strand | 448-456 | 9 | 43 |
| α-helix | 462-464 | 3 | |
| β-strand | 467-474 | 8 | 45 |
| β-strand | 477-485 | 9 | 45 |
| β-strand | 492-498 | 7 | 43 |
| α-helix | 499 | 1 | |
| β-strand | 506-515 | 10 | 45 |
| β-strand | 523-532 | 10 | 45 |
| β-strand | 533 | 1 | 44 |
| β-strand | 542-545 | 4 | 46 |
| β-strand | 558-565 | 8 | 46 |
| β-strand | 570-577 | 8 | 47 |
| α-helix | 578-581 | 4 | |
| α-helix | 591-599 | 9 | |
| α-helix | 613-620 | 8 | |
| β-strand | 622-626 | 5 | 33 |
| β-strand | 631 | 1 | 33 |
| α-helix | 632-634 | 3 | |
| α-helix | 640-641 | 2 | |
Chain D: 34 helices, 52 β-strands
| Element | Residues | Length | Sheet |
|---|
| β-strand | 742 | 1 | 48 |
| β-strand | 748-749 | 2 | 47 |
| β-strand | 753-755 | 3 | 47 |
| β-strand | 765-772 | 8 | 46 |
| β-strand | 779-787 | 9 | 47 |
| β-strand | 793-795 | 3 | 47 |
| β-strand | 799-802 | 4 | 47 |
| β-strand | 807-812 | 6 | 49 |
| β-strand | 816-818 | 3 | 48 |
| β-strand | 823-831 | 9 | 49 |
| β-strand | 838-844 | 7 | 48 |
| α-helix | 845-846 | 2 | |
| β-strand | 860-866 | 7 | 48 |
| β-strand | 870-878 | 9 | 49 |
| β-strand | 884-894 | 11 | 48 |
| β-strand | 900-910 | 11 | 48 |
| α-helix | 911 | 1 | |
| β-strand | 914-921 | 8 | 50 |
| β-strand | 924-925 | 2 | 50 |
| β-strand | 932 | 1 | 51 |
| β-strand | 935-939 | 5 | 51 |
| α-helix | 941-943 | 3 | |
| β-strand | 948 | 1 | 50 |
| α-helix | 949 | 1 | |
| β-strand | 954-962 | 9 | 50 |
| β-strand | 966 | 1 | 52 |
| α-helix | 970-974 | 5 | |
| α-helix | 975-978 | 4 | |
| α-helix | 991-1009 | 19 | |
| α-helix | 1012-1015 | 4 | |
| α-helix | 1020-1035 | 16 | |
| β-strand | 1038 | 1 | 53 |
| β-strand | 1044 | 1 | 53 |
| α-helix | 1051-1052 | 2 | |
| α-helix | 1054-1064 | 11 | |
| α-helix | 1067-1069 | 3 | |
| α-helix | 1075-1083 | 9 | |
| α-helix | 1084-1088 | 5 | |
| α-helix | 1109-1111 | 3 | |
| α-helix | 1117-1130 | 14 | |
| α-helix | 1143-1154 | 12 | |
| α-helix | 1164-1175 | 12 | |
| α-helix | 1183-1190 | 8 | |
| β-strand | 1193 | 1 | 54 |
| β-strand | 1197 | 1 | 54 |
| α-helix | 1205-1221 | 17 | |
| α-helix | 1227-1235 | 9 | |
| α-helix | 1247-1260 | 14 | |
| β-strand | 1267 | 1 | 52 |
| β-strand | 1271-1277 | 7 | 51 |
| β-strand | 1285-1290 | 6 | 51 |
| β-strand | 1298-1302 | 5 | 50 |
| β-strand | 1309-1315 | 7 | 51 |
| β-strand | 1318-1328 | 11 | 50 |
| β-strand | 1339-1346 | 8 | 55 |
| β-strand | 1362-1370 | 9 | 55 |
| β-strand | 1376 | 1 | 56 |
| β-strand | 1379-1384 | 6 | 57 |
| β-strand | 1390-1391 | 2 | 55 |
| α-helix | 1393-1401 | 9 | |
| β-strand | 1405-1406 | 2 | 57 |
| α-helix | 1409-1412 | 4 | |
| α-helix | 1415-1417 | 3 | |
| β-strand | 1421-1423 | 3 | 57 |
| β-strand | 1425-1426 | 2 | 57 |
| β-strand | 1429 | 1 | 56 |
| β-strand | 1437-1442 | 6 | 55 |
| α-helix | 1450-1452 | 3 | |
| β-strand | 1453-1459 | 7 | 57 |
| β-strand | 1467-1471 | 5 | 57 |
| α-helix | 1476-1478 | 3 | |
| β-strand | 1482-1485 | 4 | 58 |
| β-strand | 1488-1491 | 4 | 58 |
| α-helix | 1507-1514 | 8 | |
| β-strand | 1519-1532 | 14 | 59 |
| β-strand | 1537-1548 | 12 | 59 |
| β-strand | 1559-1564 | 6 | 59 |
| α-helix | 1566-1568 | 3 | |
| α-helix | 1569-1572 | 4 | |
| β-strand | 1579-1585 | 7 | 59 |
| α-helix | 1586-1588 | 3 | |
| β-strand | 1598-1599 | 2 | 59 |
| β-strand | 1605-1608 | 4 | 59 |
| α-helix | 1612-1614 | 3 | |
| α-helix | 1621-1632 | 12 | |
| α-helix | 1633-1637 | 5 | |
Chain F: 29 helices, 52 β-strands
| Element | Residues | Length | Sheet |
|---|
| α-helix | 11-13 | 3 | |
| β-strand | 19-20 | 2 | 60 |
| β-strand | 22 | 1 | 60 |
| β-strand | 23-27 | 5 | 61 |
| β-strand | 32-36 | 5 | 61 |
| α-helix | 37-38 | 2 | |
| β-strand | 41-44 | 4 | 60 |
| β-strand | 48-50 | 3 | 61 |
| β-strand | 51 | 1 | 62 |
| β-strand | 57 | 1 | 62 |
| α-helix | 58-59 | 2 | |
| β-strand | 61 | 1 | 63 |
| β-strand | 67 | 1 | 63 |
| β-strand | 71-75 | 5 | 60 |
| β-strand | 78 | 1 | 64 |
| β-strand | 87-90 | 4 | 65 |
| β-strand | 96 | 1 | 64 |
| β-strand | 101-106 | 6 | 65 |
| β-strand | 111-113 | 3 | 66 |
| β-strand | 117-119 | 3 | 65 |
| β-strand | 120 | 1 | 67 |
| β-strand | 126 | 1 | 67 |
| α-helix | 129-131 | 3 | |
| β-strand | 132-134 | 3 | 66 |
| β-strand | 149-152 | 4 | 68 |
| β-strand | 161-166 | 6 | 68 |
| α-helix | 167 | 1 | |
| β-strand | 171-173 | 3 | 69 |
| β-strand | 177-179 | 3 | 68 |
| β-strand | 180-181 | 2 | 70 |
| β-strand | 185-186 | 2 | 70 |
| β-strand | 192-194 | 3 | 69 |
| β-strand | 200 | 1 | 71 |
| α-helix | 202-213 | 12 | |
| α-helix | 215-218 | 4 | |
| β-strand | 244-251 | 8 | 72 |
| α-helix | 257-276 | 20 | |
| α-helix | 282 | 1 | |
| β-strand | 283-289 | 7 | 72 |
| β-strand | 293-297 | 5 | 72 |
| α-helix | 307-316 | 10 | |
| α-helix | 319-322 | 4 | |
| α-helix | 330-341 | 12 | |
| β-strand | 356-363 | 8 | 72 |
| α-helix | 374-383 | 10 | |
| α-helix | 395-397 | 3 | |
| β-strand | 398-404 | 7 | 72 |
| α-helix | 411-417 | 7 | |
| β-strand | 427-429 | 3 | 72 |
| β-strand | 430 | 1 | 71 |
| α-helix | 435-442 | 8 | |
| α-helix | 449-451 | 3 | |
| β-strand | 471-478 | 8 | 73 |
| β-strand | 482-490 | 9 | 73 |
| β-strand | 496-498 | 3 | 73 |
| α-helix | 509-511 | 3 | |
| β-strand | 512-516 | 5 | 73 |
| β-strand | 523-530 | 8 | 73 |
| β-strand | 553-557 | 5 | 73 |
| β-strand | 571 | 1 | 74 |
| β-strand | 575 | 1 | 75 |
| α-helix | 576-581 | 6 | |
| α-helix | 590-597 | 8 | |
| β-strand | 602-610 | 9 | 74 |
| β-strand | 615-623 | 9 | 74 |
| α-helix | 628-632 | 5 | |
| α-helix | 633-637 | 5 | |
| α-helix | 641-643 | 3 | |
| α-helix | 647-649 | 3 | |
| β-strand | 655-658 | 4 | 74 |
| α-helix | 666-669 | 4 | |
| α-helix | 671-673 | 3 | |
| β-strand | 677-682 | 6 | 74 |
| β-strand | 685-695 | 11 | 74 |
| β-strand | 700 | 1 | 76 |
| β-strand | 705 | 1 | 76 |
| β-strand | 715-719 | 5 | 74 |
| α-helix | 720-722 | 3 | |
| α-helix | 724-730 | 7 | |
| α-helix | 732-734 | 3 | |
| β-strand | 738 | 1 | 75 |
Chain H: 29 helices, 52 β-strands
| Element | Residues | Length | Sheet |
|---|
| α-helix | 11-13 | 3 | |
| β-strand | 19-20 | 2 | 77 |
| β-strand | 22 | 1 | 77 |
| β-strand | 23-27 | 5 | 78 |
| β-strand | 32-36 | 5 | 78 |
| α-helix | 37-38 | 2 | |
| β-strand | 41-44 | 4 | 77 |
| β-strand | 48-50 | 3 | 78 |
| β-strand | 51 | 1 | 79 |
| β-strand | 57 | 1 | 79 |
| α-helix | 58-59 | 2 | |
| β-strand | 61 | 1 | 80 |
| β-strand | 67 | 1 | 80 |
| β-strand | 71-75 | 5 | 77 |
| β-strand | 78 | 1 | 81 |
| β-strand | 87-90 | 4 | 82 |
| β-strand | 96 | 1 | 81 |
| β-strand | 101-106 | 6 | 82 |
| β-strand | 111-113 | 3 | 83 |
| β-strand | 117-119 | 3 | 82 |
| β-strand | 120 | 1 | 84 |
| β-strand | 126 | 1 | 84 |
| α-helix | 129-131 | 3 | |
| β-strand | 132-134 | 3 | 83 |
| β-strand | 149-152 | 4 | 85 |
| β-strand | 161-166 | 6 | 85 |
| α-helix | 167 | 1 | |
| β-strand | 171-173 | 3 | 86 |
| β-strand | 177-179 | 3 | 85 |
| β-strand | 180-181 | 2 | 87 |
| β-strand | 185-186 | 2 | 87 |
| β-strand | 192-194 | 3 | 86 |
| β-strand | 200 | 1 | 88 |
| α-helix | 202-213 | 12 | |
| α-helix | 215-218 | 4 | |
| β-strand | 244-251 | 8 | 89 |
| α-helix | 257-276 | 20 | |
| α-helix | 282 | 1 | |
| β-strand | 283-289 | 7 | 89 |
| β-strand | 293-297 | 5 | 89 |
| α-helix | 307-316 | 10 | |
| α-helix | 319-322 | 4 | |
| α-helix | 330-340 | 11 | |
| β-strand | 356-363 | 8 | 89 |
| α-helix | 374-383 | 10 | |
| α-helix | 395-397 | 3 | |
| β-strand | 398-404 | 7 | 89 |
| α-helix | 411-417 | 7 | |
| β-strand | 427-429 | 3 | 89 |
| β-strand | 430 | 1 | 88 |
| α-helix | 435-442 | 8 | |
| α-helix | 449-451 | 3 | |
| β-strand | 471-478 | 8 | 90 |
| β-strand | 482-490 | 9 | 90 |
| β-strand | 495-498 | 4 | 90 |
| α-helix | 509-511 | 3 | |
| β-strand | 512-516 | 5 | 90 |
| β-strand | 523-530 | 8 | 90 |
| β-strand | 553-557 | 5 | 90 |
| β-strand | 571 | 1 | 91 |
| β-strand | 575 | 1 | 92 |
| α-helix | 576-581 | 6 | |
| α-helix | 590-597 | 8 | |
| β-strand | 602-610 | 9 | 91 |
| β-strand | 615-623 | 9 | 91 |
| α-helix | 628-632 | 5 | |
| α-helix | 633-637 | 5 | |
| α-helix | 641-643 | 3 | |
| α-helix | 647-649 | 3 | |
| β-strand | 655-658 | 4 | 91 |
| α-helix | 666-669 | 4 | |
| α-helix | 671-673 | 3 | |
| β-strand | 677-682 | 6 | 91 |
| β-strand | 685-695 | 11 | 91 |
| β-strand | 700 | 1 | 93 |
| β-strand | 705 | 1 | 93 |
| β-strand | 715-719 | 5 | 91 |
| α-helix | 720-722 | 3 | |
| α-helix | 724-730 | 7 | |
| α-helix | 732-734 | 3 | |
| β-strand | 738 | 1 | 92 |
Chain I: 6 helices, 20 β-strands
| Element | Residues | Length | Sheet |
|---|
| β-strand | 2 | 1 | 94 |
| β-strand | 5-6 | 2 | 95 |
| α-helix | 7-8 | 2 | |
| β-strand | 15-20 | 6 | 96 |
| β-strand | 24-30 | 7 | 96 |
| β-strand | 35-38 | 4 | 96 |
| α-helix | 40-43 | 4 | |
| β-strand | 51-55 | 5 | 96 |
| β-strand | 59 | 1 | 97 |
| β-strand | 68-77 | 10 | 96 |
| β-strand | 91-95 | 5 | 96 |
| β-strand | 102 | 1 | 98 |
| β-strand | 105 | 1 | 98 |
| β-strand | 110 | 1 | 95 |
| α-helix | 116-118 | 3 | |
| β-strand | 122-127 | 6 | 95 |
| β-strand | 140 | 1 | 97 |
| β-strand | 142-147 | 6 | 95 |
| α-helix | 151-154 | 4 | |
| β-strand | 168-171 | 4 | 95 |
| β-strand | 177 | 1 | 94 |
| β-strand | 186-188 | 3 | 95 |
| β-strand | 193-197 | 5 | 95 |
| β-strand | 211-215 | 5 | 95 |
| α-helix | 216-219 | 4 | |
| α-helix | 220-226 | 7 | |
Chain J: 6 helices, 20 β-strands
| Element | Residues | Length | Sheet |
|---|
| β-strand | 2 | 1 | 99 |
| β-strand | 5-6 | 2 | 100 |
| α-helix | 7-8 | 2 | |
| β-strand | 15-20 | 6 | 101 |
| β-strand | 24-30 | 7 | 101 |
| β-strand | 35-38 | 4 | 101 |
| α-helix | 40-44 | 5 | |
| β-strand | 51-55 | 5 | 101 |
| β-strand | 59 | 1 | 102 |
| β-strand | 68-77 | 10 | 101 |
| β-strand | 91-95 | 5 | 101 |
| β-strand | 102 | 1 | 103 |
| β-strand | 105 | 1 | 103 |
| β-strand | 110 | 1 | 100 |
| α-helix | 116-118 | 3 | |
| β-strand | 122-127 | 6 | 100 |
| β-strand | 140 | 1 | 102 |
| β-strand | 142-147 | 6 | 100 |
| α-helix | 151-154 | 4 | |
| β-strand | 168-171 | 4 | 100 |
| β-strand | 177 | 1 | 99 |
| β-strand | 186-188 | 3 | 100 |
| β-strand | 193-197 | 5 | 100 |
| β-strand | 211-215 | 5 | 100 |
| α-helix | 216-219 | 4 | |
| α-helix | 220-226 | 7 | |
Molecules and chains
| Molecule | Chains | Type | Length | Organism | UniProt |
|---|
| Complement C3B beta chain | A, C | protein | 642 | HOMO SAPIENS | P01024 (AlphaFold model) |
| Complement C3B alpha' chain | B, D | protein | 912 | HOMO SAPIENS | P01024 (AlphaFold model) |
| Complement factor B | F, H | protein | 732 | HOMO SAPIENS | P00751 (AlphaFold model) |
| Complement factor D | I, J | protein | 228 | HOMO SAPIENS | P00746 (AlphaFold model) |
Sequence of entity 1 (A, C), FASTA
>2XWB_1 COMPLEMENT C3B BETA CHAIN (chains A, C)
SPMYSIITPNILRLESEETMVLEAHDAQGDVPVTVTVHDFPGKKLVLSSEKTVLTPATNH
MGNVTFTIPANREFKSEKGRNKFVTVQATFGTQVVEKVVLVSLQSGYLFIQTDKTIYTPG
STVLYRIFTVNHKLLPVGRTVMVNIENPEGIPVKQDSLSSQNQLGVLPLSWDIPELVNMG
QWKIRAYYENSPQQVFSTEFEVKEYVLPSFEVIVEPTEKFYYIYNEKGLEVTITARFLYG
KKVEGTAFVIFGIQDGEQRISLPESLKRIPIEDGSGEVVLSRKVLLDGVQNPRAEDLVGK
SLYVSATVILHSGSDMVQAERSGIPIVTSPYQIHFTKTPKYFKPGMPFDLMVFVTNPDGS
PAYRVPVAVQGEDTVQSLTQGDGVAKLSINTHPSQKPLSITVRTKKQELSEAEQATRTMQ
ALPYSTVGNSNNYLHLSVLRTELRPGETLNVNFLLRMDRAHEAKIRYYTYLIMNKGRLLK
AGRQVREPGQDLVVLPLSITTDFIPSFRLVAYYTLIGASGQREVVADSVWVDVKDSCVGS
LVVKSGQSEDRQPVPGQQMTLKIEGDHGARVVLVAVDKGVFVLNKKNKLTQSKIWDVVEK
ADIGCTPGSGKDYAGVFSDAGLTFTSSSGQQTAQRAELQCPQ
Sequence of entity 2 (B, D), FASTA
>2XWB_2 COMPLEMENT C3B ALPHA' CHAIN (chains B, D)
DEDIIAEENIVSRSEFPESWLWNVEDLKEPPKNGISTKLMNIFLKDSITTWEILAVSMSD
KKGICVADPFEVTVMQDFFIDLRLPYSVVRNEQVEIRAVLYNYRQNQELKVRVELLHNPA
FCSLATTKRRHQQTVTIPPKSSLSVPYVIVPLKTGLQEVEVKAAVYHHFISDGVRKSLKV
VPEGIRMNKTVAVRTLDPERLGREGVQKEDIPPADLSDQVPDTESETRILLQGTPVAQMT
EDAVDAERLKHLIVTPSGCGEENMIGMTPTVIAVHYLDETEQWEKFGLEKRQGALELIKK
GYTQQLAFRQPSSAFAAFVKRAPSTWLTAYVVKVFSLAVNLIAIDSQVLCGAVKWLILEK
QKPDGVFQEDAPVIHQEMIGGLRNNNEKDMALTAFVLISLQEAKDICEEQVNSLPGSITK
AGDFLEANYMNLQRSYTVAIAGYALAQMGRLKGPLLNKFLTTAKDKNRWEDPGKQLYNVE
ATSYALLALLQLKDFDFVPPVVRWLNEQRYYGGGYGSTQATFMVFQALAQYQKDAPDHQE
LNLDVSLQLPSRSSKITHRIHWESASLLRSEETKENEGFTVTAEGKGQGTLSVVTMYHAK
AKDQLTCNKFDLKVTIKPAPETEKRPQDAKNTMILEICTRYRGDQDATMSILDISMMTGF
APDTDDLKQLANGVDRYISKYELDKAFSDRNTLIIYLDKVSHSEDDCLAFKVHQYFNVEL
IQPGAVKVYAYYNLEESCTRFYHPEKEDGKLNKLCRDELCRCAEENCFIQKSDDKVTLEE
RLDKACEPGVDYVYKTRLVKVQLSNDFDEYIMAIEQTIKSGSDEVQVGQQRTFISPIKCR
EALKLEEKKHYLMWGLSSDFWGEKPNLSYIIGKDTWVEHWPEEDECQDEENQKQCQDLGA
FTESMVVFGCPN
Sequence of entity 3 (F, H), FASTA
>2XWB_3 COMPLEMENT FACTOR B (chains F, H)
GSCSLEGVEIKGGSFRLLQEGQALEYVCPSGFYPYPVQTRTCRSTGSWSTLKTQDQKTVR
KAECRAIHCPRPHDFENGEYWPRSPYYNVSDEISFHCYDGYTLRGSANRTCQVNGRWSGQ
TAICDNGAGYCSNPGIPIGTRKVGSQYRLEDSVTYHCSRGLTLRGSQRRTCQEGGSWSGT
EPSCQDSFMYDTPQEVAEAFLSSLTETIEGVDAEDGHGPGEQQKRKIVLDPSGSMNIYLV
LDGSGSIGASDFTGAKKCLVNLIEKVASYGVKPRYGLVTYATYPKIWVKVSEADSSNADW
VTKQLNEINYEDHKLKSGTNTKKALQAVYSMMSWPDDVPPEGWNRTRHVIILMTDGLHNM
GGDPITVIDEIRDLLYIGKDRKNPREDYLDVYVFGVGPLVNQVNINALASKKDNEQHVFK
VKDMENLEDVFYQMIDESQSLSLCGMVWEHRKGTDYHKQPWQAKISVIRPSKGHESCMGA
VVSEYFVLTAAHCFTVDDKEHSIKVSVGGEKRDLEIEVVLFHPNYNINGKKEAGIPEFYD
YDVALIKLKNKLKYGQTIRPICLPCTEGTTRALRLPPTTTCQQQKEELLPAQDIKALFVS
EEEKKLTRKEVYIKNGDKKGSCERDAQYAPGYDKVKDISEVVTPRFLCTGGVSPYADPNT
CRGDSGGPLIVHKRSRFIQVGVISWGVVDVCKNQKRQKQVPAHARDFHINLFQVLPWLKE
KLQDEDLGFLAA
Sequence of entity 4 (I, J), FASTA
>2XWB_4 COMPLEMENT FACTOR D (chains I, J)
ILGGREAEAHARPYMASVQLNGAHLCGGVLVAEQWVLSAAHCLEDAADGKVQVLLGAHSL
SQPEPSKRLYDVLRAVPHPDSQPDTIDHDLLLLQLSEKATLGPAVRPLPWQRVDRDVAPG
TLCDVAGWGIVNHAGRRPDSLQHVLLPVLDRATCNRRTHHDGAITERLMCAESNRRDSCK
GDAGGPLVCGGVLEGVVTSGSRVCGNRKKPGIYTRVASYAAWIDSVLA
Ligands and cofactors
| ID | Name | Formula | Copies |
|---|
| MG | Magnesium ion | Mg | 4 |
| NAG | 2-acetamido-2-deoxy-beta-D-glucopyranose | C8 H15 N O6 | 5 |
Water and common crystallization additives (GOL) are not listed.
Primary citation
Structures of C3B in Complex with Factors B and D Give Insight Into Complement Convertase Formation. Forneris, F., Ricklin, D., Wu, J. et al. Science (2010) 330:1816. DOI 10.1126/SCIENCE.1195821 · PubMed
Other PDB entries of the same protein (UniProt P01024 (AlphaFold model), which also has an AlphaFold model), best resolution first:
- 2WY7 1.7 Å, Staphylococcus aureus complement subversion protein Sbi-IV in complex with complement…
- 2WY8 1.7 Å, Staphylococcus aureus complement subversion protein Sbi-IV in complex with complement…
- 7UE9 1.75 Å, Structure of anti-C3d Fab(3d8b) in complex with C3d
- 1C3D 1.8 Å, X-ray crystal structure of C3D: a C3 fragment and ligand for complement receptor 2
- 6RMT 2.0 Å, Crystal structure of disulphide-linked human C3d dimer
- 7BAG 2.0 Å, C3b in complex with CP40
- 1GHQ 2.04 Å, CR2-C3D complex structure
- 3D5R 2.1 Å, Crystal Structure of Efb-C (N138A) / C3d Complex
- 3OXU 2.1 Å, Complement components factor H CCP19-20 and C3d in complex
- 4I6O 2.14 Å, Crystal structure of chemically synthesized human anaphylatoxin C3a
- 4ONT 2.15 Å, Ternary host recognition complex of complement factor H, C3d, and sialic acid
- 2GOX 2.2 Å, Crystal structure of Efb-C / C3d Complex
Browse structure collections
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