4LO7

HA70(D3)-HA17-HA33

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	EUF07615	e4lo7A1	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Galactose-binding domain-like	F: EUF07615	ECOD (1.6)
A	Clenterotox_C	e4lo7A2	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Galactose-binding domain-like	F: Clenterotox_C	ECOD (1.6)
E	EUF07615	e4lo7E1	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Galactose-binding domain-like	F: EUF07615	ECOD (1.6)
E	Clenterotox_C	e4lo7E2	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Galactose-binding domain-like	F: Clenterotox_C	ECOD (1.6)
B	RicinB_lectin_2	e4lo7B1	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)
D	RicinB_lectin_2	e4lo7D1	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)
F	RicinB_lectin_2	e4lo7F1	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)
H	RicinB_lectin_2	e4lo7H1	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)
C	Botulinum_HA-17	e4lo7C1	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)
G	Botulinum_HA-17	e4lo7G1	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)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.120.1090	Mainly Beta	Sandwich	Jelly Rolls		CATH (4.3.0)
E	2.60.120.1090	Mainly Beta	Sandwich	Jelly Rolls		CATH (4.3.0)
B	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)		CATH (4.3.0)
D	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)		CATH (4.3.0)
F	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)		CATH (4.3.0)
H	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)		CATH (4.3.0)
C	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)		CATH (4.3.0)
G	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, 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
B, D, F, H	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, E	HA-70	-	-	cellular anatomical structure extracellular region
B, D, F, H	HA-33	-	-	-
C, G	HA-17	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

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