Cryo-EM structure of the VRC316 clinical trial, vaccine-elicited, human antibody 316-310-1B11 in complex with an H2 CAN05 HA trimer
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
| Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
|---|---|---|---|---|---|
| J [auth D] | SCOP2B Superfamily | Influenza hemagglutinin domain-like | 8105854 | 3001342 | SCOP2B (2022-06-29) |
| F [auth C] | SCOP2B Superfamily | Influenza hemagglutinin domain-like | 8105854 | 3001342 | SCOP2B (2022-06-29) |
| B [auth A] | SCOP2 Family | Influenza hemagglutinin headpiece | 8105853 | 4002506 | SCOP2 (2022-06-29) |
| B [auth A] | SCOP2 Superfamily | Influenza hemagglutinin domain-like | 8105854 | 3001342 | SCOP2 (2022-06-29) |
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| L [auth I] | V-set_8 | e7l0lI1 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: V-set_8 | ECOD (1.6) |
| H [auth G] | V-set_8 | e7l0lG1 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: V-set_8 | ECOD (1.6) |
| D [auth H] | V-set_8 | e7l0lH1 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: V-set_8 | ECOD (1.6) |
| K [auth F] | Hemagglutinin_2nd | e7l0lF1 | A: alpha bundles | X: Hemagglutinin HA2 chain (From Topology) | H: Hemagglutinin HA2 chain (From Topology) | T: Hemagglutinin HA2 chain | F: Hemagglutinin_2nd | ECOD (1.6) |
| G [auth E] | Hemagglutinin_2nd | e7l0lE1 | A: alpha bundles | X: Hemagglutinin HA2 chain (From Topology) | H: Hemagglutinin HA2 chain (From Topology) | T: Hemagglutinin HA2 chain | F: Hemagglutinin_2nd | ECOD (1.6) |
| C [auth B] | Hemagglutinin_2nd | e7l0lB1 | A: alpha bundles | X: Hemagglutinin HA2 chain (From Topology) | H: Hemagglutinin HA2 chain (From Topology) | T: Hemagglutinin HA2 chain | F: Hemagglutinin_2nd | ECOD (1.6) |
| J [auth D] | Hemagglutinin_1st | e7l0lD1 | A: beta sandwiches | X: jelly-roll | H: Viral protein domain (From Topology) | T: Viral protein domain | F: Hemagglutinin_1st | ECOD (1.6) |
| F [auth C] | Hemagglutinin_1st | e7l0lC1 | A: beta sandwiches | X: jelly-roll | H: Viral protein domain (From Topology) | T: Viral protein domain | F: Hemagglutinin_1st | ECOD (1.6) |
| B [auth A] | Hemagglutinin_1st | e7l0lA1 | A: beta sandwiches | X: jelly-roll | H: Viral protein domain (From Topology) | T: Viral protein domain | F: Hemagglutinin_1st | ECOD (1.6) |
| I [auth K] | V-set | e7l0lK1 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: V-set | ECOD (1.6) |
| E [auth J] | V-set | e7l0lJ1 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: V-set | ECOD (1.6) |
| A [auth L] | V-set | e7l0lL1 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: V-set | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
| Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
|---|---|---|---|---|---|---|
| L [auth I] | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (utative) |
| H [auth G] | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (utative) |
| D [auth H] | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (utative) |
| K [auth F] | 3.90.20.10 | Alpha Beta | Alpha-Beta Complex | Hemagglutinin Ectodomain | Chain B | CATH (utative) |
| G [auth E] | 3.90.20.10 | Alpha Beta | Alpha-Beta Complex | Hemagglutinin Ectodomain | Chain B | CATH (utative) |
| C [auth B] | 3.90.20.10 | Alpha Beta | Alpha-Beta Complex | Hemagglutinin Ectodomain | Chain B | CATH (utative) |
| I [auth K] | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (utative) |
| E [auth J] | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (utative) |
| A [auth L] | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (utative) |
SAbDab Antibody Annotation SAbDab Database Homepage
| Chain | Chain Class | Chain Subclass | Chain Type | Antigen Name(s) | Provenance Source |
|---|---|---|---|---|---|
| D [auth H], H [auth G], L [auth I] | Heavy Chain | IGHV1 | - | hemagglutinin ha2 chain | hemagglutinin ha1 chain | SAbDab (2025-12-19) |
| A [auth L], E [auth J], I [auth K] | Light Chain | IGKV3 | Kappa | hemagglutinin ha2 chain | hemagglutinin ha1 chain | SAbDab (2025-12-19) |
Protein Family Annotation Pfam Database Homepage
| Chains | Accession | Name | Description | Comments | Source |
|---|---|---|---|---|---|
| C [auth B], G [auth E], K [auth F] | PF00509 | Haemagglutinin (Hemagglutinin) | Haemagglutinin | - | Family |
| B [auth A], F [auth C], J [auth D] | PF00509 | Haemagglutinin (Hemagglutinin) | Haemagglutinin | - | Family |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
InterPro: Protein Family Classification InterPro Database Homepage
| Chains | Accession | Name | Type |
|---|---|---|---|
| C [auth B], G [auth E], K [auth F] | IPR001364 | Haemagglutinin, influenzavirus A/B | Family |
| C [auth B], G [auth E], K [auth F] | IPR008980 | Viral capsid/haemagglutinin protein | Homologous Superfamily |
| C [auth B], G [auth E], K [auth F] | IPR000149 | Haemagglutinin, influenzavirus A | Family |
| C [auth B], G [auth E], K [auth F] | IPR013828 | Haemagglutinin, HA1 chain, alpha/beta domain superfamily | Homologous Superfamily |
| B [auth A], F [auth C], J [auth D] | IPR001364 | Haemagglutinin, influenzavirus A/B | Family |
| B [auth A], F [auth C], J [auth D] | IPR008980 | Viral capsid/haemagglutinin protein | Homologous Superfamily |
| B [auth A], F [auth C], J [auth D] | IPR000149 | Haemagglutinin, influenzavirus A | Family |
| B [auth A], F [auth C], J [auth D] | IPR013828 | Haemagglutinin, HA1 chain, alpha/beta domain superfamily | Homologous Superfamily |














