Annotations: 7XLI

Crystal structure of IsdB linker-NEAT2 bound to a nanobody (VHH)

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody 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)
B		e7xliB1	A: beta barrels	X: RNase A-like	H: RNase A-like	T: RNase A-like	F:	ECOD (v294.2)
A		e7xliA1	A: beta barrels	X: RNase A-like	H: RNase A-like	T: RNase A-like	F:	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	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
B	Heavy Chain	IGHV1	-	fur-regulated protein b	SAbDab (2026-05-08)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	VHH6 nanobody	-	-	-
A	Iron-regulated surface determinant protein B	heme transmembrane transporter activity transporter activity transmembrane transporter activity cation binding ion binding binding metal ion binding small molecule binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR005877	YSIRK Gram-positive signal peptide	Domain
A	IPR050436	Iron-regulated surface determinant protein A	Family
A	IPR006635	NEAT domain	Domain
A	IPR048652	Iron-regulated surface determinant protein H/B, linker domain	Domain
A	IPR019929	Iron-regulated surface determinant protein IsdB	Family
A	IPR019931	LPXTG cell wall anchor motif	Conserved Site
A	IPR037250	NEAT domain superfamily	Homologous Superfamily

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