3PG2 | pdb_00003pg2

The Crystal structure of the major pilin GBS80 of Streptococcus agalactiae 35 kDa C-terminal fragment

External Resource: Annotation

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: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Cna B-type domain-like	8045766	3000862	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Bacterial adhesin-like	8048169	3000723	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Bacterial adhesin-like	8048169	3000723	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Cna B-type domain-like	8045766	3000862	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	COG4932	e3pg2A6	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Prealbumin-like	F: COG4932	ECOD (1.6)
A	GramPos_pilinBB	e3pg2A5	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Common fold of diphtheria toxin/transcription factors/cytochrome f	F: GramPos_pilinBB	ECOD (1.6)
B	SdrD_B_1	e3pg2B6	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Prealbumin-like	F: SdrD_B_1	ECOD (1.6)
B	GramPos_pilinBB	e3pg2B5	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Common fold of diphtheria toxin/transcription factors/cytochrome f	F: GramPos_pilinBB	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.740	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B	2.60.40.740	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)
B	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, B	PF16569	Gram-positive pilin backbone subunit 2, Cna-B-like domain (GramPos_pilinBB)	Gram-positive pilin backbone subunit 2, Cna-B-like domain	GramPos_pilinBB is one of the major backbone units of Gram-positive pili, such as those from S.pneumoniae [1]. There are three major pilin subunits that form the polymeric backbone of the pilin from S. pneumoniae, constructed of three transthyretin ...	GramPos_pilinBB is one of the major backbone units of Gram-positive pili, such as those from S.pneumoniae [1]. There are three major pilin subunits that form the polymeric backbone of the pilin from S. pneumoniae, constructed of three transthyretin-like, CnaB, domains along with a crucial N-terminal domain, D1. The three Cna-B like domains are stabilised by internal Lys-Asn isopeptdie bonds, Gram-positive pili are formed from a single chain of covalently linked subunit proteins (pilins), usually comprising an adhesin at the distal tip, a major pilin that forms the polymer shaft and a minor pilin that mediates cell wall anchoring at the base [2].	Domain
A, B	PF17802	Prealbumin-like fold domain (SpaA)	Prealbumin-like fold domain	This entry contains a prealbumin-like domain from a wide variety of bacterial surface proteins. This entry corresponds to domain 1 and domain 3 of SpaA from Corynebacterium diphtheriae [1]. Some members of this family contain an isopeptide bond.ED A0 ...	This entry contains a prealbumin-like domain from a wide variety of bacterial surface proteins. This entry corresponds to domain 1 and domain 3 of SpaA from Corynebacterium diphtheriae [1]. Some members of this family contain an isopeptide bond.ED A0A1Y3W7T5.1/11-86;	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Cell wall surface anchor family protein	cation binding ion binding binding metal ion binding small molecule binding	-	cellular anatomical structure membrane extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A, B	IPR032334	Gram-positive pilin backbone subunit 2, Cna-B-like domain	Domain
A, B	IPR026466	Fimbrial isopeptide formation D2 domain	Domain
A, B	IPR041033	SpaA-like, prealbumin fold domain subgroup 1	Domain
A, B	IPR048052	Fimbrial subunit type 1-like	Family
A, B	IPR032364	Gram-positive pilin subunit D1, N-terminal	Domain
A, B	IPR019931	LPXTG cell wall anchor domain	Domain

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.