Human insulin in complex with the analytical antibody S1 Fab
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
| Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
|---|---|---|---|---|---|
| G [auth A] | SCOP2B Superfamily | Insulin-like | 8038024 | 3000307 | SCOP2B (2022-06-29) |
| E [auth I] | SCOP2B Superfamily | Insulin-like | 8038024 | 3000307 | 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) |
|---|---|---|---|---|---|---|---|---|
| B [auth L] | e8oniL01 | A: a/b three-layered sandwiches | X: ATP-grasp_6 | H: ATP-grasp_6 | T: ATP-grasp_6 | F: | ECOD (v294.1) | |
| A [auth H] | e8oniH01 | A: a/b three-layered sandwiches | X: ATP-grasp_6 | H: ATP-grasp_6 | T: ATP-grasp_6 | F: | ECOD (v294.1) |
SAbDab Antibody Annotation SAbDab Database Homepage
| Chain | Chain Class | Chain Subclass | Chain Type | Antigen Name(s) | Provenance Source |
|---|---|---|---|---|---|
| B [auth L], D | Light Chain | IGKV4 | Kappa | insulin b chain | insulin a chain | SAbDab (2026-03-27) |
| A [auth H], C | Heavy Chain | IGHV1 | - | insulin b chain | insulin a chain | SAbDab (2026-03-27) |
Protein Family Annotation Pfam Database Homepage
| Chains | Accession | Name | Description | Comments | Source |
|---|---|---|---|---|---|
| F [auth B], H [auth F] | PF00049 | Insulin/IGF/Relaxin family (Insulin) | Insulin/IGF/Relaxin family | Superfamily includes insulins; relaxins; insulin-like growth factor; and bombyxin. All are secreted regulatory hormones. Disulfide rich, all-alpha fold. Alignment includes B chain, linker (which is processed out of the final product), and A chain. | Domain |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
InterPro: Protein Family Classification InterPro Database Homepage
| Chains | Accession | Name | Type |
|---|---|---|---|
| F [auth B], H [auth F] | IPR004825 | Insulin | Family |
| F [auth B], H [auth F] | IPR022353 | Insulin, conserved site | Conserved Site |
| F [auth B], H [auth F] | IPR036438 | Insulin-like superfamily | Homologous Superfamily |
| F [auth B], H [auth F] | IPR016179 | Insulin-like | Domain |
| F [auth B], H [auth F] | IPR022352 | Insulin/IGF/relaxin | Family |
| E [auth I], G [auth A] | IPR004825 | Insulin | Family |
| E [auth I], G [auth A] | IPR022353 | Insulin, conserved site | Conserved Site |
| E [auth I], G [auth A] | IPR036438 | Insulin-like superfamily | Homologous Superfamily |
| E [auth I], G [auth A] | IPR016179 | Insulin-like | Domain |
| E [auth I], G [auth A] | IPR022352 | Insulin/IGF/relaxin | Family |














