3NEQ

Crystal structure of the chimeric muscarinic toxin MT7 with loop 3 from MT1

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: OPM

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Snake toxin-like	8070337	3000545	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Snake toxin-like	8070337	3000545	SCOP2B (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	Toxin_TOLIP	e3neqA1	A: few secondary structure elements	X: Snake toxin-like (From Topology)	H: Snake toxin-like (From Topology)	T: Snake toxin-like	F: Toxin_TOLIP	ECOD (1.6)
B	Toxin_TOLIP	e3neqB1	A: few secondary structure elements	X: Snake toxin-like (From Topology)	H: Snake toxin-like (From Topology)	T: Snake toxin-like	F: Toxin_TOLIP	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.10.60.10	Mainly Beta	Ribbon	CD59	CD59	CATH (4.3.0)
B	2.10.60.10	Mainly Beta	Ribbon	CD59	CD59	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00087	Snake toxin and toxin-like protein (Toxin_TOLIP)	Snake toxin and toxin-like protein	This family predominantly includes venomous neurotoxins and cytotoxins from snakes, but also structurally similar (non-snake) toxin-like proteins (TOLIPs) such as Lymphocyte antigen 6D and Ly6/PLAUR domain-containing protein. Snake toxins are short ...	This family predominantly includes venomous neurotoxins and cytotoxins from snakes, but also structurally similar (non-snake) toxin-like proteins (TOLIPs) such as Lymphocyte antigen 6D and Ly6/PLAUR domain-containing protein. Snake toxins are short proteins with a compact, disulphide-rich structure. TOLIPs have similar structural features (abundance of spaced cysteine residues, a high frequency of charge residues, a signal peptide for secretion and a compact structure) but, are not associated with a venom gland or poisonous function. They are endogenous animal proteins that are not restricted to poisonous animals [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Three-finger muscarinic toxin 7	molecular function inhibitor activity protein binding binding signaling receptor binding molecular function regulator activity signaling receptor inhibitor activity receptor antagonist activity signaling receptor regulator activity toxin activity	-	extracellular region cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR018354	Snake toxin, conserved site	Conserved Site
A, B	IPR045860	Snake toxin-like superfamily	Homologous Superfamily
A, B	IPR003571	Snake three-finger toxin	Family
A, B	IPR018354	Snake toxin, conserved site	Conserved Site
A, B	IPR035076	Snake toxin/toxin-like	Domain
A, B	IPR045860	Snake toxin-like superfamily	Homologous Superfamily
A, B	IPR003571	Snake three-finger toxin	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B	OPM	Monotopic/peripheral	All beta monotopic/peripheral	Snake toxin-like	Snake venom toxins

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.