Annotations: 12ES

Cryo-EM structure of BCMA in complex with the BCMA-targeted Fab arm of linvoseltamab and the Fab fragment of an anti-kappa light chain antibody REGN654

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Thera-SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2B Superfamily	TNF receptor-like	8044166	3000971	SCOP2B (2022-06-29)

Thera-SAbDab Antibody Annotation Thera-SAbDab Database Homepage

Chain	Name	Target	Provenance Source
E	Vonsetamig	TNFRSF17/CD269/BCMA/TNFRSF13A, CD3E	Therapeutic SAbDab (2026-09-25)
D	Linvoseltamab	TNFRSF17/CD269/BCMA/TNFRSF13A, CD3E	Therapeutic SAbDab (2026-09-25)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C	PF09257	BCMA, TALL-1 binding (BCMA-Tall_bind)	BCMA, TALL-1 binding	Members of this family, which are predominantly found in the tumour necrosis factor receptor superfamily member 17, BCMA, are required for binding to tumour necrosis factor ligand TALL-1 [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E	Light chain of the BCMA-targeted Fab arm of linvoseltamab	-	-	-
D	Heavy chain of the BCMA-targeted Fab arm of linvoseltamab	-	-	-
C	Tumor necrosis factor receptor superfamily member 17	molecular transducer activity signaling receptor activity	cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cellular process signal transduction cell communication cell surface receptor signaling pathway response to cytokine cytokine-mediated signaling pathway response to peptide cellular response to tumor necrosis factor cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cellular process signal transduction cell communication cell surface receptor signaling pathway response to cytokine cytokine-mediated signaling pathway response to peptide cellular response to tumor necrosis factor response to chemical tumor necrosis factor-mediated signaling pathway cellular response to cytokine stimulus response to tumor necrosis factor	cellular anatomical structure endomembrane system cell periphery plasma membrane membrane
B	Light chain of the Fab fragment of an anti-kappa light chain antibody REGN654	-	-	-
A	Heavy chain of the Fab fragment of an anti-kappa light chain antibody REGN654	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C	IPR022320	Tumour necrosis factor receptor 17	Family
C	IPR015337	BCMA, TALL-1 binding	Domain
C	IPR043521	Tumor necrosis factor receptor 13C/17	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
C	: Q02223	gastric carcinoma cancer exocrine pancreatic carcinoma hepatocellular carcinoma malignant colon neoplasm osteosarcoma Relapse multiple myeloma tuberculosis cutaneous lupus erythematosus gastric cancer interstitial cystitis malignant pancreatic neoplasm periodontitis sinusitis ulcerative colitis gastric carcinoma cancer exocrine pancreatic carcinoma hepatocellular carcinoma malignant colon neoplasm osteosarcoma Relapse multiple myeloma tuberculosis cutaneous lupus erythematosus gastric cancer interstitial cystitis malignant pancreatic neoplasm periodontitis sinusitis ulcerative colitis cystic fibrosis lung cancer MALT lymphoma plasma cell myeloma Sjogren syndrome