Annotations: 8E8R

9H2 Fab-Sabin poliovirus 3 complex

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody 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)
F [auth L]	Polyketide_cyc2	e8e8rL1	A: alpha arrays	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Polyketide_cyc2	ECOD (v295.2)
E [auth H]	Polyketide_cyc2	e8e8rH1	A: alpha arrays	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Polyketide_cyc2	ECOD (v295.2)
D [auth 4]	Polyketide_cyc2	e8e8r41	A: alpha arrays	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Polyketide_cyc2	ECOD (v295.2)
C [auth 3]	RNA_pol_Rpb6	e8e8r31	A: alpha arrays	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel	F: RNA_pol_Rpb6	ECOD (v295.2)
B [auth 2]	RNA_pol_Rpb6	e8e8r21	A: alpha arrays	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel	F: RNA_pol_Rpb6	ECOD (v295.2)
A [auth 1]	RNA_pol_Rpb6	e8e8r11	A: alpha arrays	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel	F: RNA_pol_Rpb6	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
F [auth L]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
E [auth H]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
B [auth 2]	2.60.120.20	Mainly Beta	Sandwich	Jelly Rolls		CATH (utative)
A [auth 1]	2.60.120.20	Mainly Beta	Sandwich	Jelly Rolls		CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
F [auth L]	Light Chain	IGLV2	Lambda	capsid protein vp1 \| capsid protein vp2 \| capsid protein vp3	SAbDab (2026-10-16)
E [auth H]	Heavy Chain	IGHV1	-	capsid protein vp1 \| capsid protein vp2 \| capsid protein vp3	SAbDab (2026-10-16)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
F [auth L]	9H2 Fab light chain	-	-	-
E [auth H]	9H2 Fab heavy chain	-	-	-
D [auth 4]	Capsid protein VP4	-	-	-
C [auth 3]	Capsid protein VP3	-	-	-
B [auth 2]	Capsid protein VP2	cysteine-type peptidase activity peptidase activity catalytic activity, acting on a protein cysteine-type endopeptidase activity hydrolase activity catalytic activity endopeptidase activity RNA-directed RNA polymerase activity 5'-3' RNA polymerase activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA polymerase activity transferase activity nucleotidyltransferase activity cysteine-type peptidase activity peptidase activity catalytic activity, acting on a protein cysteine-type endopeptidase activity hydrolase activity catalytic activity endopeptidase activity RNA-directed RNA polymerase activity 5'-3' RNA polymerase activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA polymerase activity transferase activity nucleotidyltransferase activity transferase activity, transferring phosphorus-containing groups RNA binding binding nucleic acid 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 pyrophosphatase activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity, acting on acid anhydrides passive transmembrane transporter activity channel activity transporter activity transmembrane transporter activity nucleic acid conformation isomerase activity isomerase activity helicase activity RNA helicase activity ATP-dependent activity, acting on RNA macromolecular conformation isomerase activity ATP-dependent activity structural molecule activity cation binding transition metal ion binding zinc ion binding metal ion binding	nucleobase-containing compound metabolic process DNA replication metabolic process cellular process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process RNA metabolic process viral life cycle nucleobase-containing compound biosynthetic process macromolecule biosynthetic process RNA biosynthetic process nucleic acid biosynthetic process nucleobase-containing compound metabolic process DNA replication metabolic process cellular process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process RNA metabolic process viral life cycle nucleobase-containing compound biosynthetic process macromolecule biosynthetic process RNA biosynthetic process nucleic acid biosynthetic process viral genome replication biosynthetic process viral RNA genome replication viral process import into cell receptor-mediated endocytosis of virus by host cell biological process involved in interspecies interaction between organisms transport establishment of localization caveolin-mediated endocytosis biological process involved in interaction with host vesicle-mediated transport biological process involved in symbiotic interaction localization symbiont entry into host cell caveolin-mediated endocytosis of virus by host cell symbiont entry into host endocytosis involved in viral entry into host cell receptor-mediated endocytosis endocytosis transmembrane transport monoatomic ion transmembrane transport monoatomic ion transport gene expression DNA-templated transcription symbiont-mediated perturbation of host defense response symbiont-mediated perturbation of host cellular process symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity symbiont-mediated suppression of host pathogen-associated molecular pattern receptor signaling pathway symbiont-mediated perturbation of host immune response symbiont-mediated suppression of host signal transduction pathway symbiont-mediated suppression of host immune response symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway symbiont-mediated suppression of host innate immune response symbiont-mediated perturbation of host process symbiont-mediated perturbation of host innate immune response symbiont-mediated perturbation of host signal transduction pathway modulation of process of another organism symbiont-mediated disruption of host anatomical structure symbiont-mediated disruption of host cellular anatomical structure symbiont-mediated perturbation of host membrane symbiont genome entry into host cell via pore formation in plasma membrane disruption of anatomical structure in another organism virion attachment to host cell adhesion of symbiont to host cell adhesion of symbiont to host symbiont-mediated perturbation of host autophagy symbiont-mediated activation of host autophagy symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity proteolysis protein metabolic process symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MDA-5 activity symbiont-mediated perturbation of host intracellular transport symbiont-mediated suppression of host mRNA export from nucleus symbiont-mediated suppression of host gene expression symbiont-mediated perturbation of host gene expression	host cellular component host intracellular part cellular anatomical structure host cell cytoplasm host cell part host intracellular region other organism part host intracellular membrane-bounded organelle host cell membrane host cell cytoplasmic vesicle membrane host cell cytoplasm part host intracellular organelle host cell cytoplasmic vesicle viral capsid host cellular component host intracellular part cellular anatomical structure host cell cytoplasm host cell part host intracellular region other organism part host intracellular membrane-bounded organelle host cell membrane host cell cytoplasmic vesicle membrane host cell cytoplasm part host intracellular organelle host cell cytoplasmic vesicle viral capsid icosahedral viral capsid virion component T=pseudo3 icosahedral viral capsid host cell nucleus
A [auth 1]	Capsid protein VP1	structural molecule activity	virion attachment to host cell biological process involved in interspecies interaction between organisms adhesion of symbiont to host cell viral process viral life cycle adhesion of symbiont to host biological process involved in interaction with host biological process involved in symbiotic interaction symbiont entry into host cell symbiont entry into host	host cellular component cellular anatomical structure host cell other organism part viral capsid virion component

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B [auth 2]	IPR001205	RNA-directed RNA polymerase, C-terminal domain	Domain
B [auth 2]	IPR043128	Reverse transcriptase/Diguanylate cyclase domain	Homologous Superfamily
B [auth 2]	IPR003138	Picornavirus coat protein VP4	Family
B [auth 2]	IPR000199	Peptidase C3A/C3B, picornaviral	Domain
B [auth 2]	IPR001676	Picornavirus capsid	Domain
B [auth 2]	IPR014759	Helicase, superfamily 3, single-stranded RNA virus	Domain
B [auth 2]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
B [auth 2]	IPR000081	Peptidase C3, picornavirus core protein 2A	Domain
B [auth 2]	IPR029053	Viral coat protein subunit	Homologous Superfamily
B [auth 2]	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
B [auth 2]	IPR043502	DNA/RNA polymerase superfamily	Homologous Superfamily
B [auth 2]	IPR044067	Picornavirales 3C/3C-like protease domain	Domain
B [auth 2]	IPR033703	Picornavirus/Calicivirus coat protein	Domain
B [auth 2]	IPR002527	2B protein, picornavirus	Domain
B [auth 2]	IPR014838	Poliovirus 3A protein-like	Domain
B [auth 2]	IPR036203	Poliovirus core protein 3a, soluble domain	Homologous Superfamily
B [auth 2]	IPR007094	RNA-directed RNA polymerase, catalytic domain	Domain
B [auth 2]	IPR000605	Helicase, superfamily 3, single-stranded DNA/RNA virus	Domain
A [auth 1]	IPR029053	Viral coat protein subunit	Homologous Superfamily
A [auth 1]	IPR001676	Picornavirus capsid	Domain
A [auth 1]	IPR033703	Picornavirus/Calicivirus coat protein	Domain