Annotations: 8F5N

Identification of an Immunodominant region on a Group A Streptococcus T-antigen Reveals Temperature-Dependent Motion in Pili

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)
A	Kinesin,Microtub_bd	e8f5nA1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Kinesin,Microtub_bd	ECOD (v294.1)
C [auth H]	Kinesin,Microtub_bd	e8f5nH1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Kinesin,Microtub_bd	ECOD (v294.1)
B [auth L]	Kinesin,Microtub_bd	e8f5nL1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Kinesin,Microtub_bd	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth H]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
B [auth L]	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
C [auth H]	Heavy Chain	IGHV1	-	t18.1 major pilin backbone protein t-antigen	SAbDab (2026-04-24)
B [auth L]	Light Chain	IGKV10	Kappa	t18.1 major pilin backbone protein t-antigen	SAbDab (2026-04-24)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	T18.1 Major pilin backbone protein T-antigen	cation binding ion binding binding metal ion binding small molecule binding	-	-
C [auth H]	Mouse-Human Fab heavy chain	-	-	-
B [auth L]	Mouse-Human Fab light chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR038174	Streptococcal pilin isopeptide linker superfamily	Homologous Superfamily
A	IPR022464	Streptococcal pilin isopeptide linkage domain	Domain
A	IPR055382	Domain of unknown function DUF7601	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.