1IO1 | pdb_00001io1

CRYSTAL STRUCTURE OF F41 FRAGMENT OF FLAGELLIN

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)
A	d1io1a_	Multi-domain proteins (alpha and beta)	Phase 1 flagellin	Phase 1 flagellin	Phase 1 flagellin	Phase 1 flagellin	(Salmonella enterica subsp. enterica serovar Typhimurium ) [TaxId: 90371 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	FliC central region-like	8021745	4003735	SCOP2 (2022-06-29)
A	SCOP2 Family	FlgL-like	8054353	4007637	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	FliC central-region like	8034125	3001385	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	FlgL-like	8054354	3002287	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)
A	Flagellin_D3	e1io1A2	A: beta complex topology	X: barrel domains in phase 1 flagellin (From Topology)	H: barrel domains in phase 1 flagellin (From Topology)	T: barrel domains in phase 1 flagellin	F: Flagellin_D3	ECOD (1.6)
A	PRK08026_1st	e1io1A1	A: beta complex topology	X: barrel domains in phase 1 flagellin (From Topology)	H: barrel domains in phase 1 flagellin (From Topology)	T: barrel domains in phase 1 flagellin	F: PRK08026_1st	ECOD (1.6)
A	PRK08026_2nd	e1io1A3	A: beta complex topology	X: barrel domains in phase 1 flagellin (From Topology)	H: barrel domains in phase 1 flagellin (From Topology)	T: barrel domains in phase 1 flagellin	F: PRK08026_2nd	ECOD (1.6)
A	Flagellin_N	e1io1A4	A: alpha bundles	X: Four-helical up-and-down bundle	H: alpha-helical domain in phase 1 flagellin (From Topology)	T: alpha-helical domain in phase 1 flagellin	F: Flagellin_N	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.1330.10	Mainly Alpha	Up-down Bundle	f41 fragment of flagellin, N-terminal domain	f41 fragment of flagellin, N-terminal domain	CATH (4.3.0)
A	2.170.280.10	Mainly Beta	Beta Complex	f41 fragment of flagellin, middle domain	f41 fragment of flagellin, middle domain	CATH (4.3.0)
A	2.30.220.10	Mainly Beta	Roll	f41 fragment of flagellin, C-terminal domain	f41 fragment of flagellin, C-terminal domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00700	Bacterial flagellin C-terminal helical region (Flagellin_C)	Bacterial flagellin C-terminal helical region	Flagellins polymerise to form bacterial flagella. There is some similarity between this entry and Pfam:PF00669, particularly the motif NRFXSXIXXL. It has been suggested that these two regions associate [2] and this is shown to be correct as structur ...	Flagellins polymerise to form bacterial flagella. There is some similarity between this entry and Pfam:PF00669, particularly the motif NRFXSXIXXL. It has been suggested that these two regions associate [2] and this is shown to be correct as structurally this domain forms an extended helix that interacts with the N-terminal region (Pfam:PF00669) to form the D0 and D1 structural domains [3]. These domains are responsible for the activation of TLR5, with the C-terminal D0 region playing a key role [4-6].	Domain
A	PF08884	Flagellin D3 domain (Flagellin_D3)	Flagellin D3 domain	This domain is found in the central portion bacterial flagellin FliC. The domain contains a structural motif called a beta-folium fold [1]. Although no specific function is assigned to this domain its deletion leads to a reduction in filament stabi ...	This domain is found in the central portion bacterial flagellin FliC. The domain contains a structural motif called a beta-folium fold [1]. Although no specific function is assigned to this domain its deletion leads to a reduction in filament stability [2].	Domain
A	PF21504	Flagellin, barrel domain (FLIC_barrel)	Flagellin, barrel domain	This entry represents a barrel domain of flagellins FliC and FljB, which have a boomerang-shape with one arm composed of domain D1 and the other formed by D2 and D3 [1-3]. This entry corresponds to to subdomain D2b described in [4].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	PHASE 1 FLAGELLIN	structural molecule activity molecular transducer activity protein binding binding molecular function activator activity signaling receptor binding signaling receptor activity molecular function regulator activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity	-	cell projection cellular anatomical structure organelle membraneless organelle bacterial-type flagellum extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR049365	Flagellin, barrel domain	Domain
A	IPR046358	Flagellin, C-terminal domain	Domain
A	IPR014981	Flagellin D3	Domain
A	IPR001029	Flagellin, N-terminal domain	Domain
A	IPR042187	Flagellin, C-terminal domain, subdomain 2	Homologous Superfamily
A	IPR001492	Flagellin	Family

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.