Annotations: 4NX9

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	EUF08326	e4nx9A2	A: beta sandwiches	X: gp11/flagellar cap protein FliD insertion domain (From Topology)	H: gp11/flagellar cap protein FliD insertion domain (From Topology)	T: gp11/flagellar cap protein FliD insertion domain	F: EUF08326	ECOD (1.6)
A	Flagellin_N	e4nx9A1	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	2.60.40.4390	Mainly Beta	Sandwich	Immunoglobulin-like		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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Flagellin	structural molecule activity	-	cell projection cellular anatomical structure organelle membraneless organelle bacterial-type flagellum extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR046358	Flagellin, C-terminal domain	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.