Annotations: 2K9K

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	TonB	8071265	4003582	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	TolA/TonB C-terminal domain-like	8071266	3000464	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	TonB_C	e2k9kA2	A: a+b two layers	X: TolA/TonB C-terminal domain	H: TolA/TonB C-terminal domain (From Topology)	T: TolA/TonB C-terminal domain	F: TonB_C	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.1150.10	Alpha Beta	2-Layer Sandwich	Fusion Protein Consisting Of Minor Coat Protein, Glycine Rich Linker, Tola, And A His Tag	Chain: A	CATH (4.2.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	TonB2	molecular transducer activity energy transducer activity	siderophore transport localization transport iron ion transport transition metal ion transport monoatomic ion transport monoatomic cation transport establishment of localization metal ion transport iron coordination entity transport transmembrane transport cellular process establishment of protein localization nitrogen compound transport siderophore transport localization transport iron ion transport transition metal ion transport monoatomic ion transport monoatomic cation transport establishment of localization metal ion transport iron coordination entity transport transmembrane transport cellular process establishment of protein localization nitrogen compound transport protein transport macromolecule localization intracellular protein localization	cell periphery cellular anatomical structure plasma membrane membrane outer membrane-bounded periplasmic space cell envelope periplasmic space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR051045	TonB-dependent transporter energy transducer	Family
A	IPR006260	TonB/TolA, C-terminal	Domain
A	IPR003538	Gram-negative bacterial TonB protein	Family
A	IPR037682	TonB, C-terminal	Domain

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.