1F02

CRYSTAL STRUCTURE OF C-TERMINAL 282-RESIDUE FRAGMENT OF INTIMIN IN COMPLEX WITH TRANSLOCATED INTIMIN RECEPTOR (TIR) INTIMIN-BINDING DOMAIN

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
Membrane Protein Annotation: mpstruc

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A [auth I]	d1f02i1	All beta proteins	Immunoglobulin-like beta-sandwich	Invasin/intimin cell-adhesion fragments	Invasin/intimin cell-adhesion fragments	Intimin	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
A [auth I]	d1f02i3	Alpha and beta proteins (a+b)	C-type lectin-like	C-type lectin-like	Invasin/intimin cell-adhesion fragment, C-terminal domain	Intimin	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B [auth T]	d1f02t1	Peptides	Translocated intimin receptor (tir) intimin-binding domain	Translocated intimin receptor (tir) intimin-binding domain	Translocated intimin receptor (tir) intimin-binding domain	Translocated intimin receptor (tir) intimin-binding domain	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B [auth T]	d1f02t2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(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 [auth I]	SCOP2B Superfamily	Invasin/intimin cell-adhesion fragments	8055355	3002046	SCOP2B (2022-06-29)
A [auth I]	SCOP2B Superfamily	Invasin/intimin cell-adhesion fragments	8055454	3002046	SCOP2B (2022-06-29)
A [auth I]	SCOP2B Superfamily	C-type lectin-like	8037133	3001261	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 [auth I]	Big_2	e1f02I2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Big_2	ECOD (1.6)
A [auth I]	Invasin_D3	e1f02I1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Invasin_D3	ECOD (1.6)
A [auth I]	Intimin_C	e1f02I3	A: a+b complex topology	X: C-type lectin-like (From Homology)	H: C-type lectin-like	T: C-type lectin-like	F: Intimin_C	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth I]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A [auth I]	2.60.40.1080	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)
A [auth I]	3.10.100.10	Alpha Beta	Roll	Mannose-Binding Protein A	Chain A	CATH (4.3.0)
B [auth T]	4.10.820.10	Few Secondary Structures	Irregular	Translocated Intimin Receptor	Chain T	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth I]	PF07979	Intimin C-type lectin domain (Intimin_C)	Intimin C-type lectin domain	This domain is found at the C-terminus of intimin. Its structure has been solved and shown to have a C-lectin type of structure [1]. Intimin is a bacterial adhesion molecule involved in intimate attachment of enteropathogenic and enterohemorrhagic Es ...	This domain is found at the C-terminus of intimin. Its structure has been solved and shown to have a C-lectin type of structure [1]. Intimin is a bacterial adhesion molecule involved in intimate attachment of enteropathogenic and enterohemorrhagic Escherichia coli to mammalian host cells. Intimin targets the translocated intimin receptor (Tir), which is exported by the bacteria and integrated into the host cell plasma membrane.	Domain
A [auth I]	PF02369	Bacterial Ig-like domain (group 1) (Big_1)	Bacterial Ig-like domain (group 1)	This family consists of bacterial domains with an Ig-like fold. Members of this family are found in bacterial surface proteins such as intimins and invasins involved in pathogenicity.	Domain
B [auth T]	PF03549	Translocated intimin receptor (Tir) intimin-binding domain (Tir_receptor_M)	Translocated intimin receptor (Tir) intimin-binding domain	Intimin and its translocated intimin receptor (Tir) are bacterial proteins that mediate adhesion between mammalian cells and attaching and effacing (A/E) pathogens. A unique and essential feature of A/E bacterial pathogens is the formation of actin-r ...	Intimin and its translocated intimin receptor (Tir) are bacterial proteins that mediate adhesion between mammalian cells and attaching and effacing (A/E) pathogens. A unique and essential feature of A/E bacterial pathogens is the formation of actin-rich pedestals beneath the intimately adherent bacteria and localised destruction of the intestinal brush border. The bacterial outer membrane adhesin, intimin, is necessary for the production of the A/E lesion and diarrhoea. The A/E bacteria translocate their own receptor for intimin, Tir, into the membrane of mammalian cells using the type III secretion system. The translocated Tir triggers additional host signalling events and actin nucleation, which are essential for lesion formation [1]. This family represents the Tir intimin-binding domain (Tir IBD) which is needed to bind intimin and support the predicted topology for Tir, with both N- and C-terminal regions in the mammalian cell cytosol [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth I]	INTIMIN	-	cell adhesion cellular process	cell periphery cell outer membrane cellular anatomical structure external encapsulating structure membrane cell envelope outer membrane
B [auth T]	TRANSLOCATED INTIMIN RECEPTOR	-	-	cellular anatomical structure membrane host cell plasma membrane host cellular component host cell part host cell membrane extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth I]	IPR038177	Inverse autotransporter, beta-domain superfamily	Homologous Superfamily
A [auth I]	IPR003535	Intimin/invasin bacterial adhesion mediator protein	Family
A [auth I]	IPR003344	Big-1 (bacterial Ig-like domain 1) domain	Domain
A [auth I]	IPR016187	C-type lectin fold	Homologous Superfamily
A [auth I]	IPR013117	Intimin, C-terminal	Domain
A [auth I]	IPR003343	Bacterial Ig-like domain, group 2	Domain
A [auth I]	IPR051715	Intimin/Invasin domain-containing protein	Family
A [auth I]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A [auth I]	IPR016186	C-type lectin-like/link domain superfamily	Homologous Superfamily
A [auth I]	IPR024519	Inverse autotransporter, beta-domain	Domain
A [auth I]	IPR018392	LysM domain	Domain
A [auth I]	IPR008964	Invasin/intimin cell-adhesion fragments	Homologous Superfamily
B [auth T]	IPR022638	Translocated intimin receptor	Family
B [auth T]	IPR022639	Translocated intimin receptor, C-terminal	Domain
B [auth T]	IPR037003	Translocated intimin receptor, central domain superfamily	Homologous Superfamily
B [auth T]	IPR022633	Translocated intimin receptor, N-terminal	Domain
B [auth T]	IPR003536	Translocated intimin receptor, central domain	Domain

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A [auth I], B [auth T]	mpstruc	TRANSMEMBRANE PROTEINS: BETA-BARREL	Outer Membrane Autotransporters	Intimin C-terminal passenger domain in complex with receptor

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.