Annotations: 4QS4

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	EUF07834	e4qs4A3	A: beta sandwiches	X: Agglutinin HPA-like	H: CofB C-terminal domain (From Topology)	T: CofB C-terminal domain	F: EUF07834	ECOD (1.6)
A	EUF07873	e4qs4A2	A: beta duplicates or obligate multimers	X: Phage tail fiber protein trimerization domain (From Topology)	H: Phage tail fiber protein trimerization domain (From Topology)	T: Phage tail fiber protein trimerization domain	F: EUF07873	ECOD (1.6)
A	EUF08317	e4qs4A1	A: a+b two layers	X: Pili subunits (From Topology)	H: Pili subunits (From Topology)	T: Pili subunits	F: EUF08317	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF21444	CofB, pilin domain (CofB_pilin_dom)	CofB, pilin domain	This domain is found in CofB from Escherichia coli and in similar proteins predominantly from proteobacteria. CofB is a minor pilin, required for assembly of Type IV pili. This entry represents the pilin domain, which is located in the N-terminal reg ...	This domain is found in CofB from Escherichia coli and in similar proteins predominantly from proteobacteria. CofB is a minor pilin, required for assembly of Type IV pili. This entry represents the pilin domain, which is located in the N-terminal region of the protein. It shows a canonical T4b pilin fold seen in the major pilins, with an alpha-helical backbone and a five-stranded anti- parallel beta-sheet [1,2].	Domain
A	PF22229	CofB C-terminal domain (CofB_C)	CofB C-terminal domain	CofB is a minor pilin involved in type IV pili assembly. It consists of a pilin domain at the N-terminal, followed by a beta-repeat hinge-like domain and a C-terminal beta-sheet-rich domain, similar to H-type lectins [1,2]. This entry represents the ...	CofB is a minor pilin involved in type IV pili assembly. It consists of a pilin domain at the N-terminal, followed by a beta-repeat hinge-like domain and a C-terminal beta-sheet-rich domain, similar to H-type lectins [1,2]. This entry represents the C-terminal domain which is required for CofB to initiate pilus assembly [1,2].	Domain
A	PF22228	CofB beta-repeat domain (CofB_beta-rpt)	CofB beta-repeat domain	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	CofB	-	-	cellular anatomical structure membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR053972	CofB, C-terminal domain	Domain
A	IPR053971	CofB-like, beta-repeat domain	Domain
A	IPR048688	CofB-like, pilin domain	Domain
A	IPR012902	Prokaryotic N-terminal methylation site	PTM

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.