| 8TO8 |
| Chain ID | Initial residue | Terminal residue |
|---|---|---|
| G |
VAL 5 | ASP 236 |
| H |
SER 4 | ASP 233 |
| I |
VAL 2 | ASP 1341 |
| J |
GLU 16 | ALA 1375 |
| K |
ALA 2 | GLU 76 |
| L |
SER 7 | ASP 612 |
| M |
ASP 250 | PRO 322 |
| O |
C 40 | T 82 |
| P |
A 33 | G 66 |
| Helix number | Helix ID | Chain ID |
Initial residue | Terminal residue |
Helix class |
|---|---|---|---|---|---|
| Helix 1 |
| G
| 34 | 50 | Right-handed alpha |
| Helix 2 |
| G
| 77 | 87 | Right-handed alpha |
| Helix 3 |
| G
| 154 | 159 | Right-handed alpha |
| Helix 4 |
| G
| 212 | 233 | Right-handed alpha |
| Helix 5 |
| H
| 34 | 50 | Right-handed alpha |
| Helix 6 |
| H
| 80 | 87 | Right-handed alpha |
| Helix 7 |
| H
| 113 | 115 | Right-handed 310 |
| Helix 8 |
| H
| 212 | 228 | Right-handed alpha |
| Helix 9 |
| I
| 29 | 39 | Right-handed alpha |
| Helix 10 |
| I
| 48 | 57 | Right-handed alpha |
| Helix 11 |
| I
| 62 | 64 | Right-handed 310 |
| Helix 12 |
| I
| 81 | 89 | Right-handed alpha |
| Helix 13 |
| I
| 206 | 213 | Right-handed alpha |
| Helix 14 |
| I
| 216 | 225 | Right-handed alpha |
| Helix 15 |
| I
| 270 | 281 | Right-handed alpha |
| Helix 16 |
| I
| 288 | 293 | Right-handed alpha |
| Helix 17 |
| I
| 318 | 328 | Right-handed alpha |
| Helix 18 |
| I
| 346 | 354 | Right-handed alpha |
| Helix 19 |
| I
| 358 | 371 | Right-handed alpha |
| Helix 20 |
| I
| 377 | 389 | Right-handed alpha |
| Helix 21 |
| I
| 398 | 409 | Right-handed alpha |
| Helix 22 |
| I
| 421 | 438 | Right-handed alpha |
| Helix 23 |
| I
| 455 | 480 | Right-handed alpha |
| Helix 24 |
| I
| 494 | 508 | Right-handed alpha |
| Helix 25 |
| I
| 519 | 528 | Right-handed alpha |
| Helix 26 |
| I
| 539 | 543 | Right-handed 310 |
| Helix 27 |
| I
| 551 | 555 | Right-handed 310 |
| Helix 28 |
| I
| 608 | 612 | Right-handed alpha |
| Helix 29 |
| I
| 664 | 668 | Right-handed 310 |
| Helix 30 |
| I
| 670 | 674 | Right-handed 310 |
| Helix 31 |
| I
| 675 | 687 | Right-handed alpha |
| Helix 32 |
| I
| 704 | 713 | Right-handed alpha |
| Helix 33 |
| I
| 738 | 741 | Right-handed 310 |
| Helix 34 |
| I
| 820 | 825 | Right-handed alpha |
| Helix 35 |
| I
| 898 | 907 | Right-handed alpha |
| Helix 36 |
| I
| 942 | 979 | Right-handed alpha |
| Helix 37 |
| I
| 993 | 1000 | Right-handed 310 |
| Helix 38 |
| I
| 1005 | 1037 | Right-handed alpha |
| Helix 39 |
| I
| 1081 | 1085 | Right-handed 310 |
| Helix 40 |
| I
| 1101 | 1106 | Right-handed alpha |
| Helix 41 |
| I
| 1109 | 1134 | Right-handed alpha |
| Helix 42 |
| I
| 1137 | 1150 | Right-handed alpha |
| Helix 43 |
| I
| 1160 | 1164 | Right-handed 310 |
| Helix 44 |
| I
| 1165 | 1176 | Right-handed alpha |
| Helix 45 |
| I
| 1191 | 1202 | Right-handed alpha |
| Helix 46 |
| I
| 1238 | 1242 | Right-handed 310 |
| Helix 47 |
| I
| 1271 | 1281 | Right-handed alpha |
| Helix 48 |
| I
| 1283 | 1292 | Right-handed alpha |
| Helix 49 |
| I
| 1297 | 1309 | Right-handed alpha |
| Helix 50 |
| I
| 1320 | 1333 | Right-handed alpha |
| Helix 51 |
| J
| 26 | 33 | Right-handed alpha |
| Helix 52 |
| J
| 58 | 63 | Right-handed alpha |
| Helix 53 |
| J
| 94 | 100 | Right-handed 310 |
| Helix 54 |
| J
| 114 | 117 | Right-handed 310 |
| Helix 55 |
| J
| 122 | 129 | Right-handed alpha |
| Helix 56 |
| J
| 131 | 140 | Right-handed alpha |
| Helix 57 |
| J
| 162 | 170 | Right-handed alpha |
| Helix 58 |
| J
| 181 | 192 | Right-handed alpha |
| Helix 59 |
| J
| 193 | 207 | Right-handed alpha |
| Helix 60 |
| J
| 212 | 231 | Right-handed alpha |
| Helix 61 |
| J
| 233 | 236 | Right-handed 310 |
| Helix 62 |
| J
| 246 | 250 | Right-handed 310 |
| Helix 63 |
| J
| 263 | 283 | Right-handed alpha |
| Helix 64 |
| J
| 288 | 308 | Right-handed alpha |
| Helix 65 |
| J
| 327 | 331 | Right-handed 310 |
| Helix 66 |
| J
| 370 | 377 | Right-handed alpha |
| Helix 67 |
| J
| 377 | 388 | Right-handed alpha |
| Helix 68 |
| J
| 393 | 404 | Right-handed alpha |
| Helix 69 |
| J
| 405 | 417 | Right-handed alpha |
| Helix 70 |
| J
| 430 | 432 | Right-handed 310 |
| Helix 71 |
| J
| 450 | 452 | Right-handed 310 |
| Helix 72 |
| J
| 453 | 458 | Right-handed alpha |
| Helix 73 |
| J
| 473 | 483 | Right-handed alpha |
| Helix 74 |
| J
| 504 | 514 | Right-handed alpha |
| Helix 75 |
| J
| 529 | 539 | Right-handed alpha |
| Helix 76 |
| J
| 574 | 580 | Right-handed alpha |
| Helix 77 |
| J
| 597 | 612 | Right-handed alpha |
| Helix 78 |
| J
| 614 | 636 | Right-handed alpha |
| Helix 79 |
| J
| 649 | 670 | Right-handed alpha |
| Helix 80 |
| J
| 674 | 702 | Right-handed alpha |
| Helix 81 |
| J
| 720 | 728 | Right-handed alpha |
| Helix 82 |
| J
| 733 | 742 | Right-handed alpha |
| Helix 83 |
| J
| 768 | 804 | Right-handed alpha |
| Helix 84 |
| J
| 834 | 840 | Right-handed alpha |
| Helix 85 |
| J
| 865 | 876 | Right-handed alpha |
| Helix 86 |
| J
| 884 | 888 | Right-handed 310 |
| Helix 87 |
| J
| 895 | 900 | Right-handed alpha |
| Helix 88 |
| J
| 914 | 925 | Right-handed alpha |
| Helix 89 |
| J
| 926 | 928 | Right-handed 310 |
| Helix 90 |
| J
| 1137 | 1146 | Right-handed alpha |
| Helix 91 |
| J
| 1216 | 1224 | Right-handed alpha |
| Helix 92 |
| J
| 1225 | 1237 | Right-handed alpha |
| Helix 93 |
| J
| 1237 | 1244 | Right-handed alpha |
| Helix 94 |
| J
| 1250 | 1261 | Right-handed alpha |
| Helix 95 |
| J
| 1282 | 1295 | Right-handed alpha |
| Helix 96 |
| J
| 1318 | 1326 | Right-handed alpha |
| Helix 97 |
| J
| 1327 | 1338 | Right-handed alpha |
| Helix 98 |
| J
| 1346 | 1354 | Right-handed alpha |
| Helix 99 |
| J
| 1362 | 1375 | Right-handed alpha |
| Helix 100 |
| K
| 7 | 14 | Right-handed alpha |
| Helix 101 |
| K
| 15 | 32 | Right-handed alpha |
| Helix 102 |
| K
| 45 | 56 | Right-handed alpha |
| Helix 103 |
| K
| 60 | 76 | Right-handed alpha |
| Helix 104 |
| L
| 8 | 20 | Right-handed alpha |
| Helix 105 |
| L
| 23 | 31 | Right-handed alpha |
| Helix 106 |
| L
| 39 | 49 | Right-handed alpha |
| Helix 107 |
| L
| 78 | 83 | Right-handed alpha |
| Helix 108 |
| L
| 96 | 107 | Right-handed alpha |
| Helix 109 |
| L
| 112 | 135 | Right-handed alpha |
| Helix 110 |
| L
| 137 | 153 | Right-handed alpha |
| Helix 111 |
| L
| 157 | 162 | Right-handed alpha |
| Helix 112 |
| L
| 217 | 233 | Right-handed alpha |
| Helix 113 |
| L
| 236 | 258 | Right-handed alpha |
| Helix 114 |
| L
| 262 | 292 | Right-handed alpha |
| Helix 115 |
| L
| 298 | 307 | Right-handed alpha |
| Helix 116 |
| L
| 317 | 322 | Right-handed 310 |
| Helix 117 |
| L
| 324 | 330 | Right-handed alpha |
| Helix 118 |
| L
| 333 | 352 | Right-handed alpha |
| Helix 119 |
| L
| 354 | 391 | Right-handed alpha |
| Helix 120 |
| L
| 400 | 418 | Right-handed alpha |
| Helix 121 |
| L
| 426 | 431 | Right-handed alpha |
| Helix 122 |
| L
| 431 | 446 | Right-handed alpha |
| Helix 123 |
| L
| 453 | 475 | Right-handed alpha |
| Helix 124 |
| L
| 479 | 488 | Right-handed alpha |
| Helix 125 |
| L
| 492 | 499 | Right-handed alpha |
| Helix 126 |
| L
| 518 | 523 | Right-handed 310 |
| Helix 127 |
| L
| 530 | 549 | Right-handed alpha |
| Helix 128 |
| L
| 552 | 563 | Right-handed alpha |
| Helix 129 |
| L
| 572 | 581 | Right-handed alpha |
| Helix 130 |
| L
| 585 | 600 | Right-handed alpha |
| Helix 131 |
| L
| 605 | 612 | Right-handed alpha |
| Helix 132 |
| M
| 256 | 261 | Right-handed 310 |
| Helix 133 |
| M
| 263 | 274 | Right-handed alpha |
| Helix 134 |
| M
| 277 | 283 | Right-handed alpha |
| Helix 135 |
| M
| 285 | 291 | Right-handed alpha |
| Helix 136 |
| M
| 296 | 310 | Right-handed alpha |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 13 | 15 | first strand |
| Strand 2 |
| 23 | 31 | anti-parallel |
| Strand 3 |
| 199 | 207 | anti-parallel |
| Strand 4 |
| 180 | 189 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 52 | 53 | first strand |
| Strand 2 |
| 149 | 153 | anti-parallel |
| Strand 3 |
| 175 | 177 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 115 | 116 | first strand |
| Strand 2 |
| 97 | 105 | anti-parallel |
| Strand 3 |
| 139 | 147 | anti-parallel |
| Strand 4 |
| 56 | 61 | anti-parallel |
| Strand 5 |
| 171 | 172 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 90 | 92 | first strand |
| Strand 2 |
| 121 | 123 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 108 | 111 | first strand |
| Strand 2 |
| 129 | 133 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 14 | 20 | first strand |
| Strand 2 |
| 23 | 31 | anti-parallel |
| Strand 3 |
| 204 | 207 | anti-parallel |
| Strand 4 |
| 180 | 184 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 14 | 20 | first strand |
| Strand 2 |
| 23 | 31 | anti-parallel |
| Strand 3 |
| 198 | 201 | anti-parallel |
| Strand 4 |
| 187 | 190 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 97 | 105 | first strand |
| Strand 2 |
| 139 | 149 | anti-parallel |
| Strand 3 |
| 53 | 61 | anti-parallel |
| Strand 4 |
| 171 | 172 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 109 | 111 | first strand |
| Strand 2 |
| 129 | 132 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 152 | 153 | first strand |
| Strand 2 |
| 175 | 176 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 13 | 14 | first strand |
| Strand 2 |
| 1182 | 1183 | parallel |
| Strand 3 |
| 700 | 701 | parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 59 | 60 | first strand |
| Strand 2 |
| 66 | 75 | anti-parallel |
| Strand 3 |
| 93 | 106 | anti-parallel |
| Strand 4 |
| 109 | 128 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 136 | 137 | first strand |
| Strand 2 |
| 142 | 145 | anti-parallel |
| Strand 3 |
| 512 | 514 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 451 | 454 | first strand |
| Strand 2 |
| 147 | 151 | anti-parallel |
| Strand 3 |
| 529 | 531 | parallel |
| Strand 4 |
| 572 | 574 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 154 | 159 | first strand |
| Strand 2 |
| 172 | 177 | anti-parallel |
| Strand 3 |
| 184 | 187 | anti-parallel |
| Strand 4 |
| 195 | 198 | anti-parallel |
| Strand 5 |
| 204 | 205 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 226 | 229 | first strand |
| Strand 2 |
| 334 | 337 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 238 | 239 | first strand |
| Strand 2 |
| 285 | 286 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 296 | 297 | first strand |
| Strand 2 |
| 315 | 316 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 301 | 303 | first strand |
| Strand 2 |
| 308 | 311 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 580 | 581 | first strand |
| Strand 2 |
| 587 | 594 | anti-parallel |
| Strand 3 |
| 599 | 607 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 580 | 581 | first strand |
| Strand 2 |
| 587 | 594 | anti-parallel |
| Strand 3 |
| 652 | 654 | anti-parallel |
| Strand 4 |
| 616 | 617 | parallel |
| Strand 5 |
| 633 | 637 | anti-parallel |
| Strand 6 |
| 642 | 646 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 716 | 717 | first strand |
| Strand 2 |
| 782 | 785 | anti-parallel |
| Strand 3 |
| 768 | 769 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 748 | 752 | first strand |
| Strand 2 |
| 731 | 736 | anti-parallel |
| Strand 3 |
| 722 | 728 | anti-parallel |
| Strand 4 |
| 776 | 777 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 757 | 758 | first strand |
| Strand 2 |
| 764 | 765 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 789 | 790 | first strand |
| Strand 2 |
| 793 | 794 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 1209 | 1210 | first strand |
| Strand 2 |
| 1225 | 1234 | anti-parallel |
| Strand 3 |
| 1065 | 1067 | anti-parallel |
| Strand 4 |
| 1073 | 1080 | anti-parallel |
| Strand 5 |
| 815 | 819 | parallel |
| Strand 6 |
| 1096 | 1098 | anti-parallel |
| Strand 7 |
| 798 | 804 | parallel |
| Strand 8 |
| 1225 | 1234 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 846 | 847 | first strand |
| Strand 2 |
| 830 | 843 | anti-parallel |
| Strand 3 |
| 1046 | 1058 | anti-parallel |
| Strand 4 |
| 925 | 935 | anti-parallel |
| Strand 5 |
| 876 | 878 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 849 | 850 | first strand |
| Strand 2 |
| 886 | 887 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 882 | 884 | first strand |
| Strand 2 |
| 918 | 919 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 1244 | 1246 | first strand |
| Strand 2 |
| 350 | 356 | anti-parallel |
| Strand 3 |
| 465 | 469 | anti-parallel |
| Strand 4 |
| 421 | 424 | anti-parallel |
| Strand 5 |
| 434 | 442 | anti-parallel |
| Strand 6 |
| 365 | 369 | parallel |
| Strand 7 |
| 447 | 448 | anti-parallel |
| Strand 8 |
| 350 | 356 | parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 1268 | 1270 | first strand |
| Strand 2 |
| 345 | 347 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 1335 | 1338 | first strand |
| Strand 2 |
| 20 | 24 | anti-parallel |
| Strand 3 |
| 1341 | 1342 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 34 | 37 | first strand |
| Strand 2 |
| 102 | 112 | parallel |
| Strand 3 |
| 238 | 244 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 159 | 161 | first strand |
| Strand 2 |
| 143 | 146 | anti-parallel |
| Strand 3 |
| 178 | 179 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 252 | 254 | first strand |
| Strand 2 |
| 260 | 262 | anti-parallel |
| Strand 3 |
| 505 | 506 | parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 526 | 527 | first strand |
| Strand 2 |
| 547 | 556 | parallel |
| Strand 3 |
| 564 | 573 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 703 | 706 | first strand |
| Strand 2 |
| 714 | 717 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 820 | 822 | first strand |
| Strand 2 |
| 880 | 882 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 825 | 826 | first strand |
| Strand 2 |
| 831 | 833 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 949 | 950 | first strand |
| Strand 2 |
| 1018 | 1019 | anti-parallel |
| Strand 3 |
| 1002 | 1003 | anti-parallel |
| Strand 4 |
| 973 | 975 | anti-parallel |
| Strand 5 |
| 965 | 967 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 957 | 961 | first strand |
| Strand 2 |
| 981 | 985 | anti-parallel |
| Strand 3 |
| 991 | 996 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 1034 | 1038 | first strand |
| Strand 2 |
| 1077 | 1081 | anti-parallel |
| Strand 3 |
| 1087 | 1088 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 1046 | 1050 | first strand |
| Strand 2 |
| 1057 | 1061 | anti-parallel |
| Strand 3 |
| 1105 | 1107 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 1162 | 1165 | first strand |
| Strand 2 |
| 1173 | 1178 | anti-parallel |
| Strand 3 |
| 1187 | 1190 | anti-parallel |
| Strand number | Chain ID |
Initial residue | Terminal residue | Strand sense |
|---|---|---|---|---|
| Strand 1 |
| 1279 | 1281 | first strand |
| Strand 2 |
| 1263 | 1268 | anti-parallel |
| Strand 3 |
| 1301 | 1305 | anti-parallel |