Annotations: 7RAH

Adenylate cyclase toxin RTX domain fragment bound to M1H5 Fab and M2B10 Fab

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
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)
E		e7rahE01	A: beta barrels	X: Histone-like	H: all-alpha NTP pyrophosphatases	T: Hypothetical protein AF_0060	F:	ECOD (v294.2)
D	Trypsin	e7rahD1	A: beta barrels	X: CNF1/YfiH-like putative cysteine hydrolases	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin	ECOD (v294.2)
C	Trypsin	e7rahC1	A: beta barrels	X: CNF1/YfiH-like putative cysteine hydrolases	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin	ECOD (v294.2)
B	Trypsin	e7rahB1	A: beta barrels	X: CNF1/YfiH-like putative cysteine hydrolases	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin	ECOD (v294.2)
A	Trypsin	e7rahA1	A: beta barrels	X: CNF1/YfiH-like putative cysteine hydrolases	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
D	Heavy Chain	IGHV1	-	bifunctional adenylate cyclase toxin/hemolysin cyaa,bifunctional adenylate cyclase toxin/hemolysin cyaa	SAbDab (2026-05-08)
C	Light Chain	IGKV4	Kappa	bifunctional adenylate cyclase toxin/hemolysin cyaa,bifunctional adenylate cyclase toxin/hemolysin cyaa	SAbDab (2026-05-08)
B	Heavy Chain	IGHV5	-	bifunctional adenylate cyclase toxin/hemolysin cyaa,bifunctional adenylate cyclase toxin/hemolysin cyaa	SAbDab (2026-05-08)
A	Light Chain	IGKV10	Kappa	bifunctional adenylate cyclase toxin/hemolysin cyaa,bifunctional adenylate cyclase toxin/hemolysin cyaa	SAbDab (2026-05-08)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
E	PF06594	Haemolysin-type calcium binding protein related domain (HCBP_related)	Haemolysin-type calcium binding protein related domain	-	Repeat
E	PF00353	RTX calcium-binding nonapeptide repeat (4 copies) (HemolysinCabind)	RTX calcium-binding nonapeptide repeat (4 copies)	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E	Bifunctional adenylate cyclase toxin/hemolysin CyaA,Bifunctional adenylate cyclase toxin/hemolysin CyaA	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding cation binding calcium ion binding metal ion binding phosphorus-oxygen lyase activity cyclase activity lyase activity adenylate cyclase activity catalytic activity calcium- and calmodulin-responsive adenylate cyclase activity toxin activity protein binding calmodulin binding passive transmembrane transporter activity channel activity transporter activity transmembrane transporter activity	positive regulation of cytosolic calcium ion concentration biological regulation regulation of biological quality ribose phosphate metabolic process nucleotide biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process cAMP biosynthetic process cyclic nucleotide metabolic process nucleobase-containing compound metabolic process ribonucleotide biosynthetic process purine nucleotide metabolic process ribonucleotide metabolic process nucleobase-containing small molecule metabolic process positive regulation of cytosolic calcium ion concentration biological regulation regulation of biological quality ribose phosphate metabolic process nucleotide biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process cAMP biosynthetic process cyclic nucleotide metabolic process nucleobase-containing compound metabolic process ribonucleotide biosynthetic process purine nucleotide metabolic process ribonucleotide metabolic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process cyclic nucleotide biosynthetic process phosphate-containing compound metabolic process small molecule metabolic process phosphorus metabolic process ribose phosphate biosynthetic process nucleoside phosphate metabolic process carbohydrate derivative biosynthetic process cAMP metabolic process cyclic purine nucleotide metabolic process primary metabolic process nucleotide metabolic process nucleobase-containing compound biosynthetic process purine-containing compound metabolic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process nucleoside phosphate biosynthetic process metabolic process cellular process purine ribonucleotide metabolic process purine nucleotide biosynthetic process symbiont-mediated perturbation of host cellular process biological process involved in interspecies interaction between organisms symbiont-mediated perturbation of host process symbiont-mediated cAMP intoxication of host cell symbiont-mediated perturbation of host signal transduction pathway modulation of process of another organism biological process involved in interaction with host biological process involved in symbiotic interaction hemolysis in another organism cytolysis in another organism disruption of cell in another organism disruption of anatomical structure in another organism cytolysis killing of cells of another organism cell killing	cellular anatomical structure extracellular region host cell plasma membrane host cellular component host cell part host cell membrane other organism part
D	M2B10 Fab Heavy Chain	-	-	-
C	M2B10 Fab Light Chain	-	-	-
B	M1H5 Fab Heavy Chain	-	-	-
A	M1H5 Fab Light Chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E	IPR018504	RTX, pore-forming domain	Domain
E	IPR050557	RTX toxin and mannuronan C5-epimerase	Family
E	IPR005165	Anthrax toxin, edema factor, central	Domain
E	IPR010566	Haemolysin-type calcium binding-related	Domain
E	IPR001343	RTX calcium-binding nonapeptide repeat	Repeat
E	IPR035099	Anthrax toxin, edema factor, C-terminal	Homologous Superfamily
E	IPR003995	RTX toxin determinant A	Family
E	IPR037017	Anthrax toxin, edema factor, central domain superfamily	Homologous Superfamily
E	IPR018511	Hemolysin-type calcium-binding conserved site	Conserved Site
E	IPR011049	Serralysin-like metalloprotease, C-terminal	Homologous Superfamily

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.