3IAX | pdb_00003iax

The crystal structure of the TolB box of Colicin A in complex with TolB reveals important differences in the recruitment of the common TolB translocation portal used by group A colicins

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d3iaxa2	All beta proteins	6-bladed beta-propeller	TolB, C-terminal domain	TolB, C-terminal domain	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
A	d3iaxa1	Alpha and beta proteins (a/b)	Anticodon-binding domain-like	TolB, N-terminal domain	automated matches	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	TolB N-terminal domain-like	8042388	3000482	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	YWTD domain-like	8042387	3000494	SCOP2B (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	DPPIV_N_1	e3iaxA1	A: beta duplicates or obligate multimers	X: beta-propeller-like	H: beta-propeller	T: 6-bladed	F: DPPIV_N_1	ECOD (1.6)
A	TolB_N	e3iaxA2	A: a/b three-layered sandwiches	X: TolB, N-terminal domain (From Topology)	H: TolB, N-terminal domain (From Topology)	T: TolB, N-terminal domain	F: TolB_N	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.10070	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	TolB, N-terminal domain	CATH (4.3.0)
A	2.120.10.30	Mainly Beta	6 Propeller	Neuraminidase	TolB, C-terminal domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF07676	WD40-like Beta Propeller Repeat (PD40)	WD40-like Beta Propeller Repeat	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Colicin-A	molecular adaptor activity pore-forming activity	biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response response to external stimulus defense response to Gram-negative bacterium response to biotic stimulus defense response to bacterium response to bacterium response to stress response to external biotic stimulus cellular process disruption of cell in another organism disruption of anatomical structure in another organism biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response response to external stimulus defense response to Gram-negative bacterium response to biotic stimulus defense response to bacterium response to bacterium response to stress response to external biotic stimulus cellular process disruption of cell in another organism disruption of anatomical structure in another organism killing of cells of another organism cell killing	cell periphery cellular anatomical structure plasma membrane membrane
A	Protein tolB	protein binding binding protein domain specific binding protein-containing complex binding	cell septum assembly cytokinesis cellular component biogenesis cellular component organization cellular component assembly cytokinetic process cellular process cell cycle cell division cellular component organization or biogenesis cell cycle process protein import localization establishment of protein localization cell septum assembly cytokinesis cellular component biogenesis cellular component organization cellular component assembly cytokinetic process cellular process cell cycle cell division cellular component organization or biogenesis cell cycle process protein import localization establishment of protein localization nitrogen compound transport protein transport transport macromolecule localization intracellular protein localization establishment of localization amide transport bacteriocin transport membrane organization regulation of biological process regulation of cellular component organization regulation of cellular process biological regulation membrane invagination regulation of membrane invagination cellular response to nitrogen compound cellular response to stimulus response to bacteriocin response to stimulus response to oxygen-containing compound response to nitrogen compound response to antibiotic cellular response to oxygen-containing compound cellular response to antibiotic cellular response to chemical stimulus cellular response to bacteriocin response to chemical	cellular anatomical structure membrane cell division site periplasmic space outer membrane-bounded periplasmic space cell envelope protein-containing complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR055023	Colicin-A, N-terminal domain	Domain
B	IPR038283	Channel forming colicin, C-terminal domain superfamily	Homologous Superfamily
B	IPR000293	Channel forming colicin, C-terminal cytotoxic	Domain
A	IPR011042	Six-bladed beta-propeller, TolB-like	Homologous Superfamily
A	IPR007195	TolB, N-terminal	Domain
A	IPR011659	WD40-like beta-propeller	Repeat
A	IPR014167	Tol-Pal system protein TolB	Family

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.