Annotations: 4B0M

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d4b0ma_	All beta proteins	FimD N-terminal domain-like	FimD N-terminal domain-like	automated matches	automated matches	(Yersinia pestis ) [TaxId: 632 ],	SCOPe (2.08)
B	d4b0mb_	All beta proteins	Common fold of diphtheria toxin/transcription factors/cytochrome f	Bacterial adhesins	Pilus subunits	F1 capsule antigen Caf1	(Yersinia pestis ) [TaxId: 632 ],	SCOPe (2.08)
C [auth M]	d4b0mm1	All beta proteins	Immunoglobulin-like beta-sandwich	PapD-like	Pilus chaperone	Chaperone protein Caf1m	(Yersinia pestis ) [TaxId: 632 ],	SCOPe (2.08)
C [auth M]	d4b0mm2	All beta proteins	C2 domain-like	Periplasmic chaperone C-domain	Periplasmic chaperone C-domain	Caf1m	(Yersinia pestis ) [TaxId: 632 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	Bacterial adhesin-like	8034616	3000723	SCOP2B (2022-06-29)
C [auth M]	SCOP2B Superfamily	PapD-like	8055321	3002067	SCOP2B (2022-06-29)
C [auth M]	SCOP2B Superfamily	Periplasmic chaperone C-domain	8034615	3000998	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	PF13954	e4b0mA2	A: beta barrels	X: FimD N-terminal domain-like	H: FimD N-terminal domain-like (From Topology)	T: FimD N-terminal domain-like	F: PF13954	ECOD (1.6)
B	PF09255	e4b0mB2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Common fold of diphtheria toxin/transcription factors/cytochrome f	F: PF09255	ECOD (1.6)
C [auth M]	PF00345	e4b0mM4	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF00345	ECOD (1.6)
C [auth M]	PF02753	e4b0mM3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF02753	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.10.20.410	Alpha Beta	Roll	Ubiquitin-like (UB roll)	PapC, N-terminal domain	CATH (4.3.0)
B	2.60.40.1090	Mainly Beta	Sandwich	Immunoglobulin-like	Fimbrial-type adhesion domain	CATH (4.3.0)
C [auth M]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF13954	PapC N-terminal domain (PapC_N)	PapC N-terminal domain	The PapC N-terminal domain is a structural domain found at the N-terminus of the E. coli PapC protein. Pili are assembled using the chaperone usher system. In E.coli this is composed of the chaperone PapD and the usher PapC. This domain represents th ...	The PapC N-terminal domain is a structural domain found at the N-terminus of the E. coli PapC protein. Pili are assembled using the chaperone usher system. In E.coli this is composed of the chaperone PapD and the usher PapC. This domain represents the N-terminal domain from PapC and its homologues. This domain is involved in substrate binding [1].	Domain
B	PF09255	Caf1 Capsule antigen (Antig_Caf1)	Caf1 Capsule antigen	Members of this family are predominantly found in the F1 capsule antigen Caf1 synthesised by Yersinia bacteria. They adopt a structure consisting of a seven strands arranged in two beta-sheets, in a Greek-key topology, and mediate targeting of the ba ...	Members of this family are predominantly found in the F1 capsule antigen Caf1 synthesised by Yersinia bacteria. They adopt a structure consisting of a seven strands arranged in two beta-sheets, in a Greek-key topology, and mediate targeting of the bacterium to sites of infection [1].	Domain
C [auth M]	PF02753	Pili assembly chaperone PapD, C-terminal domain (PapD_C)	Pili assembly chaperone PapD, C-terminal domain	Ig-like beta-sandwich fold. This domain is the C-terminal part of the pilus and flagellar-assembly chaperone protein PapD.	Domain
C [auth M]	PF00345	Pili and flagellar-assembly chaperone, PapD N-terminal domain (PapD_N)	Pili and flagellar-assembly chaperone, PapD N-terminal domain	C2 domain-like beta-sandwich fold. This domain is the n-terminal part of the PapD chaperone protein for pilus and flagellar assembly.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	F1 CAPSULE-ANCHORING PROTEIN	wide pore channel activity passive transmembrane transporter activity channel activity porin activity fimbrial usher porin activity transporter activity transmembrane transporter activity	cellular component biogenesis cellular component organization cellular component assembly cell projection organization cellular process pilus assembly cellular component organization or biogenesis pilus organization cell projection assembly	cell periphery cell outer membrane external encapsulating structure membrane cell envelope outer membrane cellular anatomical entity
B	F1 CAPSULE ANTIGEN	-	cell adhesion cellular process	cell periphery external encapsulating structure glycocalyx cellular anatomical entity capsule extracellular region pilus cell projection
C [auth M]	CHAPERONE PROTEIN CAF1M	-	cellular component organization cell wall organization or biogenesis cell wall organization cellular process cellular component organization or biogenesis external encapsulating structure organization organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process primary metabolic process gene expression chaperone-mediated protein folding macromolecule biosynthetic process protein maturation cellular component organization cell wall organization or biogenesis cell wall organization cellular process cellular component organization or biogenesis external encapsulating structure organization organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process primary metabolic process gene expression chaperone-mediated protein folding macromolecule biosynthetic process protein maturation organic substance metabolic process protein folding biosynthetic process organic substance biosynthetic process metabolic process protein metabolic process macromolecule metabolic process	outer membrane-bounded periplasmic space cell envelope periplasmic space cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR042186	Outer membrane usher protein FimD, plug domain	Homologous Superfamily
A	IPR037224	PapC, N-terminal domain superfamily	Homologous Superfamily
A	IPR018030	Fimbrial membrane usher, conserved site	Conserved Site
A	IPR025885	PapC, N-terminal domain	Domain
A	IPR043142	PapC-like, C-terminal domain superfamily	Homologous Superfamily
A	IPR025949	PapC-like, C-terminal domain	Domain
A	IPR000015	Outer membrane usher protein	Family
B	IPR036937	Fimbrial-type adhesion domain superfamily	Homologous Superfamily
B	IPR015335	F1 capsule antigen	Family
B	IPR008966	Adhesion domain superfamily	Homologous Superfamily
C [auth M]	IPR036316	Pili assembly chaperone, C-terminal domain superfamily	Homologous Superfamily
C [auth M]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
C [auth M]	IPR016148	Pili assembly chaperone, C-terminal	Domain
C [auth M]	IPR008962	PapD-like superfamily	Homologous Superfamily
C [auth M]	IPR016147	Pili assembly chaperone, N-terminal	Domain
C [auth M]	IPR001829	Pili assembly chaperone, bacterial	Family
C [auth M]	IPR018046	Pili assembly chaperone, conserved site	Conserved Site

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 R01GM133198.