Annotations: 5MHS

T1L reovirus sigma1 complexed with 5C6 Fab fragments

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
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)
I [auth N]	SasG_E	e5mhsN1	A: beta barrels	X: Tetrapyrrole methylase C-terminal domain-like	H: Tetrapyrrole methylase C-terminal domain	T: Tetrapyrrole methylase C-terminal domain	F: SasG_E	ECOD (v294.2)
H	SasG_E	e5mhsH1	A: beta barrels	X: Tetrapyrrole methylase C-terminal domain-like	H: Tetrapyrrole methylase C-terminal domain	T: Tetrapyrrole methylase C-terminal domain	F: SasG_E	ECOD (v294.2)
E	SasG_E	e5mhsE1	A: beta barrels	X: Tetrapyrrole methylase C-terminal domain-like	H: Tetrapyrrole methylase C-terminal domain	T: Tetrapyrrole methylase C-terminal domain	F: SasG_E	ECOD (v294.2)
G	SasG_E	e5mhsG1	A: beta barrels	X: Tetrapyrrole methylase C-terminal domain-like	H: Tetrapyrrole methylase C-terminal domain	T: Tetrapyrrole methylase C-terminal domain	F: SasG_E	ECOD (v294.2)
F	SasG_E	e5mhsF1	A: beta barrels	X: Tetrapyrrole methylase C-terminal domain-like	H: Tetrapyrrole methylase C-terminal domain	T: Tetrapyrrole methylase C-terminal domain	F: SasG_E	ECOD (v294.2)
D	SasG_E	e5mhsD1	A: beta barrels	X: Tetrapyrrole methylase C-terminal domain-like	H: Tetrapyrrole methylase C-terminal domain	T: Tetrapyrrole methylase C-terminal domain	F: SasG_E	ECOD (v294.2)
C	SasG_E	e5mhsC1	A: beta barrels	X: Tetrapyrrole methylase C-terminal domain-like	H: Tetrapyrrole methylase C-terminal domain	T: Tetrapyrrole methylase C-terminal domain	F: SasG_E	ECOD (v294.2)
B	SasG_E	e5mhsB1	A: beta barrels	X: Tetrapyrrole methylase C-terminal domain-like	H: Tetrapyrrole methylase C-terminal domain	T: Tetrapyrrole methylase C-terminal domain	F: SasG_E	ECOD (v294.2)
A	SasG_E	e5mhsA1	A: beta barrels	X: Tetrapyrrole methylase C-terminal domain-like	H: Tetrapyrrole methylase C-terminal domain	T: Tetrapyrrole methylase C-terminal domain	F: SasG_E	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
I [auth N]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
H	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
E	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
G	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
F	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C	2.60.90.20	Mainly Beta	Sandwich	Adenovirus Type 5 Fiber Protein (Receptor Binding Domain)	Virus attachment protein , globular domain	CATH (4.3.0)
B	2.60.90.20	Mainly Beta	Sandwich	Adenovirus Type 5 Fiber Protein (Receptor Binding Domain)	Virus attachment protein , globular domain	CATH (4.3.0)
A	2.60.90.20	Mainly Beta	Sandwich	Adenovirus Type 5 Fiber Protein (Receptor Binding Domain)	Virus attachment protein , globular domain	CATH (4.3.0)

IMGT Antibody Annotation IMGT Database Homepage

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
E, H, I [auth N]	Fab 5C6	VH-CH1	Mus musculus (house mouse)	IGHV2-203, IGHJ101, IGHJ102, IGHG2C01, IGHG2C02, IGHG2C03	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-2C_KAPPA	IMGT (202617-0)
D, F, G	Fab 5C6	L-KAPPA	Mus musculus (house mouse)	IGKV3-1201, IGKJ501, IGKC01, IGKC02	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-2C_KAPPA	IMGT (202617-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
E, H, I [auth N]	Heavy Chain	IGHV2	-	outer capsid protein sigma-1 \| outer capsid protein sigma-1	SAbDab (2026-05-08)
D, F, G	Light Chain	IGKV3	Kappa	outer capsid protein sigma-1 \| outer capsid protein sigma-1	SAbDab (2026-05-08)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E, H, I [auth N]	5C6 Fab heavy chain	-	-	-
D, F, G	5C6 Fab light chain	-	-	-
A, B, C	Outer capsid protein sigma-1	-	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 cell adhesion cellular process symbiont entry into host cell symbiont entry into host	viral capsid virion component icosahedral viral capsid viral outer capsid

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR002592	Outer capsid protein sigma-1, C-terminal domain	Domain
A, B, C	IPR008982	Adenovirus pIV-like, attachment domain	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.