Cryo-EM structure of Chikungunya virus in complex with Fab fragments of mAb CHK-263 (subregion around icosahedral 5-fold vertex)
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
| Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
|---|---|---|---|---|---|
| Y [auth L] | SCOP2B Superfamily | Trypsin-like serine proteases | 8101317 | 3000114 | SCOP2B (2022-06-29) |
| WA [auth S] | SCOP2B Superfamily | Trypsin-like serine proteases | 8101317 | 3000114 | SCOP2B (2022-06-29) |
| TA [auth x] | SCOP2B Superfamily | Trypsin-like serine proteases | 8101317 | 3000114 | SCOP2B (2022-06-29) |
| T [auth f] | SCOP2B Superfamily | Trypsin-like serine proteases | 8101317 | 3000114 | SCOP2B (2022-06-29) |
| S [auth c] | SCOP2B Superfamily | Trypsin-like serine proteases | 8101317 | 3000114 | SCOP2B (2022-06-29) |
| R [auth i] | SCOP2B Superfamily | Trypsin-like serine proteases | 8101317 | 3000114 | SCOP2B (2022-06-29) |
| QA [auth u] | SCOP2B Superfamily | Trypsin-like serine proteases | 8101317 | 3000114 | SCOP2B (2022-06-29) |
| NA [auth r] | SCOP2B Superfamily | Trypsin-like serine proteases | 8101317 | 3000114 | SCOP2B (2022-06-29) |
| KA [auth o] | SCOP2B Superfamily | Trypsin-like serine proteases | 8101317 | 3000114 | SCOP2B (2022-06-29) |
| I [auth F] | SCOP2B Superfamily | Trypsin-like serine proteases | 8101317 | 3000114 | SCOP2B (2022-06-29) |
| HA [auth l] | SCOP2B Superfamily | Trypsin-like serine proteases | 8101317 | 3000114 | SCOP2B (2022-06-29) |
| H [auth C] | SCOP2B Superfamily | Trypsin-like serine proteases | 8101317 | 3000114 | SCOP2B (2022-06-29) |
| G [auth I] | SCOP2B Superfamily | Trypsin-like serine proteases | 8101317 | 3000114 | SCOP2B (2022-06-29) |
| EA [auth R] | SCOP2B Superfamily | Trypsin-like serine proteases | 8101317 | 3000114 | SCOP2B (2022-06-29) |
| BA [auth O] | SCOP2B Superfamily | Trypsin-like serine proteases | 8101317 | 3000114 | SCOP2B (2022-06-29) |
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| U [auth W] | PA14 | e7cw2W1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| J [auth U] | PA14 | e7cw2U1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| V | PA14 | e7cw2V1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| K [auth T] | PA14 | e7cw2T1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| Y [auth L] | PA14 | e7cw2L1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| WA [auth S] | PA14 | e7cw2S1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| TA [auth x] | PA14 | e7cw2x1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| T [auth f] | PA14 | e7cw2f1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| S [auth c] | PA14 | e7cw2c1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| R [auth i] | PA14 | e7cw2i1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| QA [auth u] | PA14 | e7cw2u1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| NA [auth r] | PA14 | e7cw2r1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| KA [auth o] | PA14 | e7cw2o1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| I [auth F] | PA14 | e7cw2F1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| HA [auth l] | PA14 | e7cw2l1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| H [auth C] | PA14 | e7cw2C1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| G [auth I] | PA14 | e7cw2I1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| EA [auth R] | PA14 | e7cw2R1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| BA [auth O] | PA14 | e7cw2O1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| Z [auth M] | PA14 | e7cw2M1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| W [auth J] | PA14 | e7cw2J1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| UA [auth y] | PA14 | e7cw2y1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| RA [auth v] | PA14 | e7cw2v1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| P [auth d] | PA14 | e7cw2d1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| OA [auth s] | PA14 | e7cw2s1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| N [auth a] | PA14 | e7cw2a1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| LA [auth p] | PA14 | e7cw2p1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| L [auth g] | PA14 | e7cw2g1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| IA [auth m] | PA14 | e7cw2m1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| FA [auth j] | PA14 | e7cw2j1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| E [auth D] | PA14 | e7cw2D1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| CA [auth P] | PA14 | e7cw2P1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| C [auth A] | PA14 | e7cw2A1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
| A [auth G] | PA14 | e7cw2G1 | A: alpha bundles | X: CNF1/YfiH-like putative cysteine hydrolases | H: Bromodomain | T: Bromodomain | F: PA14 | ECOD (develop294) |
IMGT Antibody Annotation IMGT Database Homepage
| Chain | Protein Name | Description | Organism Name | Gene Allele Name(s) | Domain Name(s) | Receptor Type | Receptor Description | Provenance Source |
|---|---|---|---|---|---|---|---|---|
| J [auth U], U [auth W] | mAb CHK-263 | VH-CH1 | Mus musculus (house mouse) | IGHV1-80*01, IGHJ2*01, IGHG2C*01, IGHG2C*02, IGHG2C*03 | V-DOMAIN VH, C-DOMAIN CH1 | IG | FAB-GAMMA-1_KAPPA | IMGT (202610-0) |
| K [auth T], V | mAb CHK-263 | L-KAPPA | Mus musculus (house mouse) | IGKV5-43*01, IGKJ2*01, IGKC*01, IGKC*02 | V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA | IG | FAB-GAMMA-1_KAPPA | IMGT (202610-0) |
SAbDab Antibody Annotation SAbDab Database Homepage
| Chain | Chain Class | Chain Subclass | Chain Type | Antigen Name(s) | Provenance Source |
|---|---|---|---|---|---|
| J [auth U], U [auth W] | Heavy Chain | IGHV1 | - | e2 glycoprotein | e1 glycoprotein, unknown | unknown | SAbDab (2026-03-20) |
| K [auth T], V | Light Chain | IGKV5 | Kappa | e2 glycoprotein | e1 glycoprotein, unknown | unknown | SAbDab (2026-03-20) |
Protein Family Annotation Pfam Database Homepage
| Chains | Accession | Name | Description | Comments | Source |
|---|---|---|---|---|---|
| J [auth U], U [auth W] | PF00943 | Alphavirus E2 glycoprotein (Alpha_E2_glycop) | Alphavirus E2 glycoprotein | - | Family |
| J [auth U], U [auth W] | PF00944 | Alphavirus core protein (Peptidase_S3) | Alphavirus core protein | Also known as coat protein C and capsid protein C. This makes the literature very confusing. Alphaviruses consist of a nucleoprotein core, a lipid membrane which envelopes the core, and glycoprotein spikes protruding from the lipid membrane. | Domain |
| K [auth T], V | PF00943 | Alphavirus E2 glycoprotein (Alpha_E2_glycop) | Alphavirus E2 glycoprotein | - | Family |
| K [auth T], V | PF01589 | Alphavirus E1 glycoprotein (Alpha_E1_glycop) | Alphavirus E1 glycoprotein | - | Family |
| PF00944 | Alphavirus core protein (Peptidase_S3) | Alphavirus core protein | Also known as coat protein C and capsid protein C. This makes the literature very confusing. Alphaviruses consist of a nucleoprotein core, a lipid membrane which envelopes the core, and glycoprotein spikes protruding from the lipid membrane. | Domain | |
| PF00943 | Alphavirus E2 glycoprotein (Alpha_E2_glycop) | Alphavirus E2 glycoprotein | - | Family | |
| PF01589 | Alphavirus E1 glycoprotein (Alpha_E1_glycop) | Alphavirus E1 glycoprotein | - | Family |














