Annotations: 7XLD

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	NEAT domain-like	8100364	3002054	SCOP2B (2022-06-29)

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	-	iron-regulated surface determinant protein h	SAbDab (2026-02-06)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Nanobody VHH6	-	-	-
A	Iron-regulated surface determinant protein H	binding tetrapyrrole binding heme 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	IPR019930	Iron-regulated surface determinant protein H	Family
A	IPR048652	Iron-regulated surface determinant protein H/B, linker domain	Domain
A	IPR019931	LPXTG cell wall anchor motif	Conserved Site
A	IPR037250	NEAT domain superfamily	Homologous Superfamily

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.