3CI0 | pdb_00003ci0

The Crystal Structure of the GspK-GspI-GspJ complex from enterotoxigenic Escherichia coli Type 2 Secretion System

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)
C [auth K]	d3ci0k1	All alpha proteins	SAM domain-like	GspK insert domain-like	GspK insert domain-like	Pseudopilin GspK	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
C [auth K]	d3ci0k3	Alpha and beta proteins (a+b)	Pili subunits	Pili subunits	GspK pilin-like domain	Pseudopilin GspK	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B [auth J]	d3ci0j1	Alpha and beta proteins (a+b)	Pili subunits	Pili subunits	EpsJ-like	Pseudopilin GspJ	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
A [auth I]	d3ci0i1	Alpha and beta proteins (a+b)	Pili subunits	Pili subunits	GSPII I/J protein-like	Pseudopilin GspI	(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)
C [auth K]	SCOP2 Family	GspK insert domain-like	8027720	4001409	SCOP2 (2022-06-29)
C [auth K]	SCOP2 Family	GspK insert domain-like	8027721	4001409	SCOP2 (2022-06-29)
C [auth K]	SCOP2 Family	GspK pilin-like domain	8027723	4001777	SCOP2 (2022-06-29)
C [auth K]	SCOP2 Superfamily	GspK insert domain-like	8040099	3001512	SCOP2 (2022-06-29)
C [auth K]	SCOP2 Superfamily	GspK insert domain-like	8040100	3001512	SCOP2 (2022-06-29)
C [auth K]	SCOP2 Superfamily	Pili subunits	8040102	3000097	SCOP2 (2022-06-29)
B [auth J]	SCOP2 Family	EpsJ-like	8027717	4001771	SCOP2 (2022-06-29)
B [auth J]	SCOP2 Superfamily	Pili subunits	8040096	3000097	SCOP2 (2022-06-29)
A [auth I]	SCOP2 Family	GSPII I/J protein-like	8027716	4000249	SCOP2 (2022-06-29)
A [auth I]	SCOP2 Superfamily	Pili subunits	8040095	3000097	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)
C [auth K]	T2SSK_1st	e3ci0K2	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: SAM domain-like	F: T2SSK_1st	ECOD (1.6)
C [auth K]	T2SSK_2nd	e3ci0K1	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: SAM domain-like	F: T2SSK_2nd	ECOD (1.6)
C [auth K]	UNK_F_TYPE	e3ci0K3	A: a+b two layers	X: Pili subunits (From Topology)	H: Pili subunits (From Topology)	T: Pili subunits	F: UNK_F_TYPE	ECOD (1.6)
B [auth J]	T2SSJ	e3ci0J1	A: a+b two layers	X: Pili subunits (From Topology)	H: Pili subunits (From Topology)	T: Pili subunits	F: T2SSJ	ECOD (1.6)
A [auth I]	T2SSI	e3ci0I1	A: a+b two layers	X: Pili subunits (From Topology)	H: Pili subunits (From Topology)	T: Pili subunits	F: T2SSI	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth K]	3.30.1300.30	Alpha Beta	2-Layer Sandwich	Pantoate--beta-alanine Ligase	Chain: A,domain 2	CATH (4.3.0)
C [auth K]	1.10.40.60	Mainly Alpha	Orthogonal Bundle	Ribonucleotide Reductase Protein R1	domain 1	CATH (4.3.0)
B [auth J]	3.10.610.10	Alpha Beta	Roll	Pili subunits	GSPII I/J protein-like	CATH (4.3.0)
B [auth J]	2.10.70.20	Mainly Beta	Ribbon	Complement Module	domain 1	CATH (4.3.0)
A [auth I]	3.30.1300.30	Alpha Beta	2-Layer Sandwich	Pantoate--beta-alanine Ligase	Chain: A,domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C [auth K]	PF03934	Type II secretion system (T2SS), protein K (T2SSK)	Type II secretion system (T2SS), protein K	Members of this family are involved in the Type II protein secretion system. The T2SK family includes proteins such as ExeK, PulK, OutX and XcpX. They consist of two tandem SAM-like domains, this entry represents the second one.	Domain
C [auth K]	PF21687	Type II secretion system (T2SS), protein K (T2SSK_1st)	Type II secretion system (T2SS), protein K	Members of this family are involved in the Type II protein secretion system. The T2SK family includes proteins such as ExeK, PulK, OutX and XcpX. They consist of two tandem SAM-like domains, this entry represents the first one.	Domain
B [auth J]	PF11612	Type II secretion system (T2SS), protein J (T2SSJ)	Type II secretion system (T2SS), protein J	-	Family
A [auth I]	PF02501	Type II secretion system (T2SS), protein I (T2SSI)	Type II secretion system (T2SS), protein I	The Type II secretion system, also called Secretion-dependent pathway (SDP), is responsible for the transport of proteins across the outer membrane first exported to the periplasm by the Sec or Tat translocon in Gram-negative (diderm) bacteria. As me ...	The Type II secretion system, also called Secretion-dependent pathway (SDP), is responsible for the transport of proteins across the outer membrane first exported to the periplasm by the Sec or Tat translocon in Gram-negative (diderm) bacteria. As members of the T2SJ family, members of the T2SI family are pseudopilins containing prepilin signal sequences [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth K]	Pseudopilin GspK	cation binding ion binding binding metal ion binding small molecule binding	establishment of protein localization nitrogen compound transport transport secretion establishment of protein localization to extracellular region export from cell protein secretion establishment of localization protein localization to extracellular region localization secretion by cell protein transport macromolecule localization cellular process establishment of protein localization nitrogen compound transport transport secretion establishment of protein localization to extracellular region export from cell protein secretion establishment of localization protein localization to extracellular region localization secretion by cell protein transport macromolecule localization cellular process intracellular protein localization	cell periphery cellular anatomical structure plasma membrane membrane
B [auth J]	Pseudopilin GspJ	-	protein transport across the cell outer membrane establishment of protein localization nitrogen compound transport transport secretion establishment of protein localization to extracellular region export from cell protein secretion by the type II secretion system protein secretion establishment of localization protein localization to extracellular region transmembrane transport localization secretion by cell protein transmembrane transport protein transport across the cell outer membrane establishment of protein localization nitrogen compound transport transport secretion establishment of protein localization to extracellular region export from cell protein secretion by the type II secretion system protein secretion establishment of localization protein localization to extracellular region transmembrane transport localization secretion by cell protein transmembrane transport protein transport macromolecule localization cellular process intracellular protein localization	cell periphery cellular anatomical structure plasma membrane membrane protein-containing complex type II protein secretion system complex
A [auth I]	Pseudopilin GspI	-	protein transport across the cell outer membrane establishment of protein localization nitrogen compound transport transport secretion establishment of protein localization to extracellular region export from cell protein secretion by the type II secretion system protein secretion establishment of localization protein localization to extracellular region transmembrane transport localization secretion by cell protein transmembrane transport protein transport across the cell outer membrane establishment of protein localization nitrogen compound transport transport secretion establishment of protein localization to extracellular region export from cell protein secretion by the type II secretion system protein secretion establishment of localization protein localization to extracellular region transmembrane transport localization secretion by cell protein transmembrane transport protein transport macromolecule localization cellular process intracellular protein localization	cell periphery cellular anatomical structure plasma membrane membrane protein-containing complex type II protein secretion system complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth K]	IPR005628	General secretion pathway protein K	Family
C [auth K]	IPR049179	T2SS protein K, second SAM-like domain	Domain
C [auth K]	IPR049031	T2SS protein K, first SAM-like domain	Domain
C [auth K]	IPR038072	GspK, central domain superfamily	Homologous Superfamily
C [auth K]	IPR045584	Pilin-like	Homologous Superfamily
B [auth J]	IPR010055	Type II secretion system protein GspJ	Family
B [auth J]	IPR012902	Prokaryotic N-terminal methylation site	PTM
B [auth J]	IPR051621	Type II secretion system protein J	Family
B [auth J]	IPR045584	Pilin-like	Homologous Superfamily
A [auth I]	IPR003413	Type II secretion system protein GspI, C-terminal	Domain
A [auth I]	IPR012902	Prokaryotic N-terminal methylation site	PTM
A [auth I]	IPR010052	Type II secretion system protein GspI	Family
A [auth I]	IPR045584	Pilin-like	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.