Annotations: 3WIN

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth D]	Clenterotox_N	e3winD1	A: beta complex topology	X: Aerolysin family of pore-forming toxins (From Topology)	H: Aerolysin family of pore-forming toxins (From Topology)	T: Aerolysin family of pore-forming toxins	F: Clenterotox_N	ECOD (1.6)
B [auth E]	EUF07615	e3winE2	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Galactose-binding domain-like	F: EUF07615	ECOD (1.6)
B [auth E]	Clenterotox_C	e3winE3	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Galactose-binding domain-like	F: Clenterotox_C	ECOD (1.6)
B [auth E]	Clenterotox_N	e3winE4	A: beta complex topology	X: Aerolysin family of pore-forming toxins (From Topology)	H: Aerolysin family of pore-forming toxins (From Topology)	T: Aerolysin family of pore-forming toxins	F: Clenterotox_N	ECOD (1.6)
C	Botulinum_HA-17	e3winC1	A: beta duplicates or obligate multimers	X: beta-Trefoil (From Topology)	H: beta-Trefoil (From Topology)	T: beta-Trefoil	F: Botulinum_HA-17	ECOD (1.6)
D [auth A]	RicinB_lectin_2	e3winA1	A: beta duplicates or obligate multimers	X: beta-Trefoil (From Topology)	H: beta-Trefoil (From Topology)	T: beta-Trefoil	F: RicinB_lectin_2	ECOD (1.6)
E [auth B]	RicinB_lectin_2	e3winB1	A: beta duplicates or obligate multimers	X: beta-Trefoil (From Topology)	H: beta-Trefoil (From Topology)	T: beta-Trefoil	F: RicinB_lectin_2	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth D]	2.170.15.20	Mainly Beta	Beta Complex	Proaerolysin	Chain A, domain 3	CATH (4.3.0)
B [auth E]	2.170.15.20	Mainly Beta	Beta Complex	Proaerolysin	Chain A, domain 3	CATH (4.3.0)
B [auth E]	2.60.120.1090	Mainly Beta	Sandwich	Jelly Rolls		CATH (4.3.0)
C	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)		CATH (4.3.0)
D [auth A]	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)		CATH (4.3.0)
E [auth B]	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth D]	PF03505	Clostridium enterotoxin (Clenterotox)	Clostridium enterotoxin	-	Family
B [auth E]	PF03505	Clostridium enterotoxin (Clenterotox)	Clostridium enterotoxin	-	Family
B [auth E]	PF17993	Haemagglutinin 70 C-terminal domain (HA70_C)	Haemagglutinin 70 C-terminal domain	This is the C-terminal domain found in hemagglutinin component such as HA70 found in Clostridium botulinum. HA is a component of the large botulinum neurotoxin complex and is critical for its oral toxicity. HA plays multiple roles in toxin penetratio ...	This is the C-terminal domain found in hemagglutinin component such as HA70 found in Clostridium botulinum. HA is a component of the large botulinum neurotoxin complex and is critical for its oral toxicity. HA plays multiple roles in toxin penetration in the gastrointestinal tract, including protection from the digestive environment, binding to the intestinal mucosal surface, and disruption of the epithelial barrier [1]. HA consists of three different proteins, designated HA70 (also known as HA3), HA33 (HA1), and HA17 (HA2) based on molecular mass [2]. HA70 consists of three domains (D1-3). The D1 and D2 domains, which adopt similar structures, mediate the trimerization of HA70 with each protomer. The D3 domain, sitting at the tip of the trimer, is composed of two similar jelly-roll-like beta-sandwich structures [3]. Furthermore, crystal structures of HA70 in a complex with alpha2,3- or alpha2,6-SiaLac (alpha2,6-sialyllactose), show that alpha2,3- and alpha2,6-SiaLac bound to the same region in the D3 domain of HA70. This domain is the D3 domain found in HA3/HA70 which has been shown to be involved in binding to carbohydrate of glycoproteins from epithelial cells in the infection process [2].	Domain
D [auth A], E [auth B]	PF14200	Ricin-type beta-trefoil lectin domain-like (RicinB_lectin_2)	Ricin-type beta-trefoil lectin domain-like	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth D]	HA3	-	-	extracellular region cellular anatomical entity
B [auth E]	HA3	-	-	extracellular region cellular anatomical entity
C	17 kD hemagglutinin component	-	-	-
D [auth A], E [auth B]	HA1	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth D]	IPR003897	Clostridium enterotoxin	Family
A [auth D]	IPR040597	Hemagglutinin component HA-70, C-terminal	Domain
B [auth E]	IPR003897	Clostridium enterotoxin	Family
B [auth E]	IPR040597	Hemagglutinin component HA-70, C-terminal	Domain
C	IPR035992	Ricin B-like lectins	Homologous Superfamily
C	IPR008903	Hemagglutinin component HA-17	Family
D [auth A], E [auth B]	IPR035992	Ricin B-like lectins	Homologous Superfamily
D [auth A], E [auth B]	IPR000772	Ricin B, lectin 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.