Annotations: 4WKZ

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	UNK_F_TYPE	e4wkzB1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Common fold of diphtheria toxin/transcription factors/cytochrome f	F: UNK_F_TYPE	ECOD (1.6)
A	CttA_X	e4wkzA1	A: beta sandwiches	X: Cellulose-binding protein CttA N-terminal domain (From Topology)	H: Cellulose-binding protein CttA N-terminal domain (From Topology)	T: Cellulose-binding protein CttA N-terminal domain	F: CttA_X	ECOD (1.6)
A	Dockerin_III	e4wkzA2	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: Type I dockerin domain	F: Dockerin_III	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.60.40.680	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)
A	2.60.40.3810	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)
A	1.10.1330.10	Mainly Alpha	Orthogonal Bundle	Type 1 dockerin domain	Dockerin domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF18244	Cellulose-binding protein CttA N-terminal domain (CttA_N)	Cellulose-binding protein CttA N-terminal domain	This is the N-terminal domain of cellulose-binding protein CttA present in Ruminococcus flavefaciens. CttA mediates attachment of the bacterial substrate via two carbohydrate-binding modules. The domain is known as the X-module and lacks a true hydr ...	This is the N-terminal domain of cellulose-binding protein CttA present in Ruminococcus flavefaciens. CttA mediates attachment of the bacterial substrate via two carbohydrate-binding modules. The domain is known as the X-module and lacks a true hydrophobic core. Unlike the X-modules in other types of CohE-XDoc complexes it does not contribute to the binding surface. This X-module appears to serve as an extended spacer, which separates the cellulose-binding modules at the N terminus of CttA and the bacterial cell wall. The domain does not share structural similarity with other known X-modules from cellulolytic bacteria but does show similarity to G5-1 module of StrH from S. pneumoniae [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Autonomous cohesin	-	-	-
A	Putative cellulose-binding protein	cation binding ion binding binding metal ion binding small molecule binding	carbohydrate metabolic process polysaccharide metabolic process catabolic process polysaccharide catabolic process carbohydrate catabolic process metabolic process primary metabolic process macromolecule metabolic process macromolecule catabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR033802	Carbohydrate-binding protein CttA, X module	Domain
A	IPR036439	Dockerin domain superfamily	Homologous Superfamily
A	IPR040959	Cellulose-binding protein CttA, N-terminal	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 R01GM133198.