9FWB | pdb_00009fwb

Cryo-EM structure of the type 1 pilus assembly platform as part of the FimA-bound chaperone-usher pilus complex (Local refinement including FimD, FimC, FimAn and FimAn-1)

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: MemProtMD

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D [auth A]	SCOP2B Superfamily	Bacterial adhesin-like	8098074	3000723	SCOP2B (2022-06-29)
C [auth B]	SCOP2B Superfamily	Bacterial adhesin-like	8098074	3000723	SCOP2B (2022-06-29)
B [auth C]	SCOP2B Superfamily	Periplasmic chaperone C-domain	8035665	3000998	SCOP2B (2022-06-29)
B [auth C]	SCOP2B Superfamily	PapD-like	8055315	3002067	SCOP2B (2022-06-29)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C [auth B], D [auth A]	PF00419	Fimbrial protein (Fimbrial)	Fimbrial protein		Domain
B [auth C]	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
B [auth C]	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
A [auth D]	PF13953	PapC C-terminal domain (PapC_C)	PapC C-terminal domain	The PapC C-terminal domain is a structural domain found at the C-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 C-terminal domain is a structural domain found at the C-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 C-terminal domain from PapC and its homologues. This domain has a beta-sandwich structure similar to the plug domain of PapC [1].	Domain
A [auth D]	PF00577	Outer membrane usher protein (Usher)	Outer membrane usher protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth B], D [auth A]	Type-1 fimbrial protein, A chain	identical protein binding protein binding binding	cell adhesion involved in biofilm formation cell aggregation biofilm formation biological process involved in intraspecies interaction between organisms cell-substrate adhesion single-species biofilm formation aggregation of unicellular organisms submerged biofilm formation cell adhesion involved in single-species biofilm formation cell adhesion cellular process single-species submerged biofilm formation	pilus cell projection cellular anatomical structure
B [auth C]	Chaperone protein FimC	protein folding chaperone	cellular component organization cell wall organization or biogenesis cell wall organization cellular process cellular component organization or biogenesis external encapsulating structure organization	cellular anatomical structure outer membrane-bounded periplasmic space cell envelope periplasmic space
A [auth D]	Outer membrane usher protein FimD	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 cellular anatomical structure external encapsulating structure membrane cell envelope outer membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth B], D [auth A]	IPR000259	Fimbrial-type adhesion domain	Domain
C [auth B], D [auth A]	IPR036937	Fimbrial-type adhesion domain superfamily	Homologous Superfamily
C [auth B], D [auth A]	IPR050263	Bacterial Fimbrial Adherence	Family
C [auth B], D [auth A]	IPR008966	Adhesion domain superfamily	Homologous Superfamily
B [auth C]	IPR036316	Pili assembly chaperone, C-terminal domain superfamily	Homologous Superfamily
B [auth C]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B [auth C]	IPR050643	Periplasmic Pilus Chaperone	Family
B [auth C]	IPR016148	Pili assembly chaperone, C-terminal	Domain
B [auth C]	IPR008962	PapD-like superfamily	Homologous Superfamily
B [auth C]	IPR016147	Pili assembly chaperone, N-terminal	Domain
B [auth C]	IPR001829	Pili assembly chaperone, bacterial	Family
B [auth C]	IPR018046	Pili assembly chaperone, conserved site	Conserved Site
A [auth D]	IPR042186	Outer membrane usher protein FimD, plug domain	Homologous Superfamily
A [auth D]	IPR037224	PapC, N-terminal domain superfamily	Homologous Superfamily
A [auth D]	IPR018030	Fimbrial membrane usher, conserved site	Conserved Site
A [auth D]	IPR025885	PapC, N-terminal domain	Domain
A [auth D]	IPR043142	PapC-like, C-terminal domain superfamily	Homologous Superfamily
A [auth D]	IPR025949	PapC-like, C-terminal domain	Domain
A [auth D]	IPR000015	Outer membrane usher protein	Family

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A [auth D], B [auth C], C [auth B], D [auth A]	MemProtMD	Annotated as membrane protein by MemProtMD

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.