Annotations: 4RUD

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	CBS	e4rudA1	A: a/b three-layered sandwiches	X: Transmembrane heme-binding four-helical bundle	H: Baseplate wedge protein gp7 helical domain	T: Baseplate wedge protein gp7 helical domain	F: CBS	ECOD (v294.1)
B	Phage_RBD_prop	e4rudB1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: Phage_RBD_prop	ECOD (v294.1)

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)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Three-finger toxin 3b	neurotransmitter receptor regulator activity acetylcholine receptor regulator activity molecular function inhibitor activity acetylcholine receptor inhibitor activity molecular function regulator activity signaling receptor inhibitor activity signaling receptor regulator activity cation binding ion binding binding metal ion binding small molecule binding toxin activity	-	cellular anatomical structure extracellular region