Annotations: 8RW9

Domains 1 and 2 of Bacillus anthracis Sap S-layer in complex with Nb694

External Resource: Annotation

Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
E	AAA_25	e8rw9E01	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: AAA_25	ECOD (v294.2)
A	AAA_25	e8rw9A01	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: AAA_25	ECOD (v294.2)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
A, B, C, D	Heavy Chain	IGHV3	-	s-layer protein sap	SAbDab (2026-05-08)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
E, F, G, H	PF13205	Bacterial Ig-like domain (Big_5)	Bacterial Ig-like domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E, F, G, H	S-layer protein sap	-	-	cellular anatomical structure external encapsulating structure extracellular region S-layer
A, B, C, D	Nanobody694	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E, F, G, H	IPR051465	Cell Envelope Structural Component	Family
E, F, G, H	IPR014755	Copper resistance protein CopC/internalin, immunoglobulin-like	Homologous Superfamily
E, F, G, H	IPR032812	SbsA, Ig-like domain	Domain
E, F, G, H	IPR003343	Bacterial Ig-like domain, group 2	Domain
E, F, G, H	IPR008964	Invasin/intimin cell-adhesion fragments	Homologous Superfamily
E, F, G, H	IPR001119	S-layer homology domain	Domain

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.