6W09 | pdb_00006w09

Human mAbs broadly protect against infection of arthritiogenic alphaviruses by recognizing conserved elements of the MXR8 receptor binding domain

External Resource: Annotation

Domain Annotation: ECOD Classification
IMGT Antibody Annotation
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)
T	Alpha_E3_glycop	e6w09T1	A: a+b two layers	X: Glycoprotein E3 (From Topology)	H: Glycoprotein E3 (From Topology)	T: Glycoprotein E3	F: Alpha_E3_glycop	ECOD (1.6)
S	Alpha_E3_glycop	e6w09S1	A: a+b two layers	X: Glycoprotein E3 (From Topology)	H: Glycoprotein E3 (From Topology)	T: Glycoprotein E3	F: Alpha_E3_glycop	ECOD (1.6)
R	Alpha_E3_glycop	e6w09R1	A: a+b two layers	X: Glycoprotein E3 (From Topology)	H: Glycoprotein E3 (From Topology)	T: Glycoprotein E3	F: Alpha_E3_glycop	ECOD (1.6)
Q	Alpha_E3_glycop	e6w09Q1	A: a+b two layers	X: Glycoprotein E3 (From Topology)	H: Glycoprotein E3 (From Topology)	T: Glycoprotein E3	F: Alpha_E3_glycop	ECOD (1.6)
P	C1-set	e6w09P1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set	ECOD (1.6)
P	V-set_3	e6w09P2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_3	ECOD (1.6)
N [auth O]	C1-set	e6w09O1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set	ECOD (1.6)
N [auth O]	V-set_3	e6w09O2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_3	ECOD (1.6)
L [auth N]	C1-set	e6w09N1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set	ECOD (1.6)
L [auth N]	V-set_3	e6w09N2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_3	ECOD (1.6)
J [auth M]	C1-set	e6w09M1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set	ECOD (1.6)
J [auth M]	V-set_3	e6w09M2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_3	ECOD (1.6)
O [auth L]	V-set_8	e6w09L2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_8	ECOD (1.6)
O [auth L]	C1-set_1	e6w09L1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_1	ECOD (1.6)
M [auth K]	V-set_8	e6w09K2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_8	ECOD (1.6)
M [auth K]	C1-set_1	e6w09K1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_1	ECOD (1.6)
K [auth J]	V-set_8	e6w09J1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_8	ECOD (1.6)
K [auth J]	C1-set_1	e6w09J2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_1	ECOD (1.6)
I	V-set_8	e6w09I1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_8	ECOD (1.6)
I	C1-set_1	e6w09I2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_1	ECOD (1.6)
H	Alpha_E2_glycop_2nd	e6w09H3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E2_glycop_2nd	ECOD (1.6)
H	Alpha_E2_glycop_1st	e6w09H1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E2_glycop_1st	ECOD (1.6)
H	Alpha_E2_glycop_3rd	e6w09H2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E2_glycop_3rd	ECOD (1.6)
G	Alpha_E2_glycop_2nd	e6w09G3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E2_glycop_2nd	ECOD (1.6)
G	Alpha_E2_glycop_1st	e6w09G1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E2_glycop_1st	ECOD (1.6)
G	Alpha_E2_glycop_3rd	e6w09G2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E2_glycop_3rd	ECOD (1.6)
F	Alpha_E2_glycop_2nd	e6w09F1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E2_glycop_2nd	ECOD (1.6)
F	Alpha_E2_glycop_1st	e6w09F2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E2_glycop_1st	ECOD (1.6)
F	Alpha_E2_glycop_3rd	e6w09F3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E2_glycop_3rd	ECOD (1.6)
E	Alpha_E2_glycop_2nd	e6w09E1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E2_glycop_2nd	ECOD (1.6)
E	Alpha_E2_glycop_1st	e6w09E3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E2_glycop_1st	ECOD (1.6)
E	Alpha_E2_glycop_3rd	e6w09E2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E2_glycop_3rd	ECOD (1.6)
D	Alpha_E1_glycop_2nd	e6w09D1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E1_glycop_2nd	ECOD (1.6)
D	Alpha_E1_glycop_1st	e6w09D2	A: beta complex topology	X: Viral glycoprotein, central and dimerisation domains-like	H: Viral glycoprotein, central and dimerisation domains (From Topology)	T: Viral glycoprotein, central and dimerisation domains	F: Alpha_E1_glycop_1st	ECOD (1.6)
C	Alpha_E1_glycop_2nd	e6w09C1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E1_glycop_2nd	ECOD (1.6)
C	Alpha_E1_glycop_1st	e6w09C2	A: beta complex topology	X: Viral glycoprotein, central and dimerisation domains-like	H: Viral glycoprotein, central and dimerisation domains (From Topology)	T: Viral glycoprotein, central and dimerisation domains	F: Alpha_E1_glycop_1st	ECOD (1.6)
B	Alpha_E1_glycop_2nd	e6w09B1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E1_glycop_2nd	ECOD (1.6)
B	Alpha_E1_glycop_1st	e6w09B2	A: beta complex topology	X: Viral glycoprotein, central and dimerisation domains-like	H: Viral glycoprotein, central and dimerisation domains (From Topology)	T: Viral glycoprotein, central and dimerisation domains	F: Alpha_E1_glycop_1st	ECOD (1.6)
A	Alpha_E1_glycop_2nd	e6w09A1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E1_glycop_2nd	ECOD (1.6)
A	Alpha_E1_glycop_1st	e6w09A2	A: beta complex topology	X: Viral glycoprotein, central and dimerisation domains-like	H: Viral glycoprotein, central and dimerisation domains (From Topology)	T: Viral glycoprotein, central and dimerisation domains	F: Alpha_E1_glycop_1st	ECOD (1.6)

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
J [auth M], L [auth N], N [auth O], P	mAb CHK-265, broadly protect against arthritogenic alphaviruses	L-LAMBDA	Mus musculus (house mouse)	IGLV101, IGLJ101, IGLC1*01	V-DOMAIN V-LAMBDA, C-DOMAIN C-LAMBDA	IG	FAB-GAMMA-1_LAMBDA	IMGT (202600-0)
I, K [auth J], M [auth K], O [auth L]	mAb CHK-265, broadly protect against arthritogenic alphaviruses	VH-CH1	Mus musculus (house mouse)	IGHV9-101, IGHJ201, IGHG2C01, IGHG2C02, IGHG2C*03	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_LAMBDA	IMGT (202600-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
J [auth M], L [auth N], N [auth O], P	Light Chain	IGLV1	Lambda	e2 glycoprotein	SAbDab (2026-01-09)
I, K [auth J], M [auth K], O [auth L]	Heavy Chain	IGHV9	-	e2 glycoprotein	SAbDab (2026-01-09)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
Q, R, S, T	PF01563	Alphavirus E3 glycoprotein (Alpha_E3_glycop)	Alphavirus E3 glycoprotein	-	Family
E, F, G, H	PF00943	Alphavirus E2 glycoprotein (Alpha_E2_glycop)	Alphavirus E2 glycoprotein	-	Family
A, B, C, D	PF01589	Alphavirus E1 glycoprotein (Alpha_E1_glycop)	Alphavirus E1 glycoprotein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
Q, R, S, T	E3	peptidase activity catalytic activity, acting on a protein serine hydrolase activity serine-type peptidase activity hydrolase activity serine-type endopeptidase activity catalytic activity endopeptidase activity RNA binding binding nucleic acid binding structural molecule activity	viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell biological process involved in interspecies interaction between organisms symbiont entry into host cell symbiont entry into host viral life cycle biological process involved in interaction with host biological process involved in symbiotic interaction virion attachment to host cell adhesion of symbiont to host cell adhesion of symbiont to host proteolysis metabolic process viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell biological process involved in interspecies interaction between organisms symbiont entry into host cell symbiont entry into host viral life cycle biological process involved in interaction with host biological process involved in symbiotic interaction virion attachment to host cell adhesion of symbiont to host cell adhesion of symbiont to host proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process	cellular anatomical structure membrane host cell plasma membrane host cellular component host cell part host cell membrane other organism part host intracellular part host cell cytoplasm host intracellular region virion component virion membrane viral capsid icosahedral viral capsid cellular anatomical structure membrane host cell plasma membrane host cellular component host cell part host cell membrane other organism part host intracellular part host cell cytoplasm host intracellular region virion component virion membrane viral capsid icosahedral viral capsid T=4 icosahedral viral capsid host intracellular membrane-bounded organelle host cell nucleus host intracellular organelle
J [auth M], L [auth N], N [auth O], P	Fab CHK-265 light chain	-	-	-
I, K [auth J], M [auth K], O [auth L]	Fab CHK-265 heavy chain	-	-	-
E, F, G, H	E2 glycoprotein	peptidase activity catalytic activity, acting on a protein serine hydrolase activity serine-type peptidase activity hydrolase activity serine-type endopeptidase activity catalytic activity endopeptidase activity RNA binding binding nucleic acid binding structural molecule activity	viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell biological process involved in interspecies interaction between organisms symbiont entry into host cell symbiont entry into host viral life cycle biological process involved in interaction with host biological process involved in symbiotic interaction virion attachment to host cell adhesion of symbiont to host cell adhesion of symbiont to host proteolysis metabolic process viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell biological process involved in interspecies interaction between organisms symbiont entry into host cell symbiont entry into host viral life cycle biological process involved in interaction with host biological process involved in symbiotic interaction virion attachment to host cell adhesion of symbiont to host cell adhesion of symbiont to host proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process	cellular anatomical structure membrane host cell plasma membrane host cellular component host cell part host cell membrane other organism part host intracellular part host cell cytoplasm host intracellular region virion component virion membrane viral capsid icosahedral viral capsid cellular anatomical structure membrane host cell plasma membrane host cellular component host cell part host cell membrane other organism part host intracellular part host cell cytoplasm host intracellular region virion component virion membrane viral capsid icosahedral viral capsid T=4 icosahedral viral capsid host intracellular membrane-bounded organelle host cell nucleus host intracellular organelle
A, B, C, D	E1 glycoprotein	peptidase activity catalytic activity, acting on a protein serine hydrolase activity serine-type peptidase activity hydrolase activity serine-type endopeptidase activity catalytic activity endopeptidase activity RNA binding binding nucleic acid binding structural molecule activity	viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell biological process involved in interspecies interaction between organisms symbiont entry into host cell symbiont entry into host viral life cycle biological process involved in interaction with host biological process involved in symbiotic interaction virion attachment to host cell adhesion of symbiont to host cell adhesion of symbiont to host proteolysis metabolic process viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell biological process involved in interspecies interaction between organisms symbiont entry into host cell symbiont entry into host viral life cycle biological process involved in interaction with host biological process involved in symbiotic interaction virion attachment to host cell adhesion of symbiont to host cell adhesion of symbiont to host proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process	cellular anatomical structure membrane host cell plasma membrane host cellular component host cell part host cell membrane other organism part host intracellular part host cell cytoplasm host intracellular region virion component virion membrane viral capsid icosahedral viral capsid cellular anatomical structure membrane host cell plasma membrane host cellular component host cell part host cell membrane other organism part host intracellular part host cell cytoplasm host intracellular region virion component virion membrane viral capsid icosahedral viral capsid T=4 icosahedral viral capsid host intracellular membrane-bounded organelle host cell nucleus host intracellular organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
Q, R, S, T	IPR002533	Alphavirus E3 spike glycoprotein	Domain
Q, R, S, T	IPR038055	Flaviviral glycoprotein E, dimerisation domain	Homologous Superfamily
Q, R, S, T	IPR014756	Immunoglobulin E-set	Homologous Superfamily
Q, R, S, T	IPR042304	Alphavirus E2 glycoprotein, domain A	Homologous Superfamily
Q, R, S, T	IPR036253	Flavivirus glycoprotein, central and dimerisation domain superfamily	Homologous Superfamily
Q, R, S, T	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
Q, R, S, T	IPR042305	Alphavirus E2 glycoprotein, domain B	Homologous Superfamily
Q, R, S, T	IPR042306	Alphavirus E2 glycoprotein, domain C	Homologous Superfamily
Q, R, S, T	IPR000936	Alphavirus E2 glycoprotein	Family
Q, R, S, T	IPR000930	Peptidase S3, togavirin	Domain
Q, R, S, T	IPR002548	Alphavirus E1 glycoprotein	Domain
Q, R, S, T	IPR000336	Flavivirus/Alphavirus glycoprotein, immunoglobulin-like domain superfamily	Homologous Superfamily
Q, R, S, T	IPR043504	Peptidase S1, PA clan, chymotrypsin-like fold	Homologous Superfamily
E, F, G, H	IPR002533	Alphavirus E3 spike glycoprotein	Domain
E, F, G, H	IPR038055	Flaviviral glycoprotein E, dimerisation domain	Homologous Superfamily
E, F, G, H	IPR014756	Immunoglobulin E-set	Homologous Superfamily
E, F, G, H	IPR042304	Alphavirus E2 glycoprotein, domain A	Homologous Superfamily
E, F, G, H	IPR036253	Flavivirus glycoprotein, central and dimerisation domain superfamily	Homologous Superfamily
E, F, G, H	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
E, F, G, H	IPR042305	Alphavirus E2 glycoprotein, domain B	Homologous Superfamily
E, F, G, H	IPR042306	Alphavirus E2 glycoprotein, domain C	Homologous Superfamily
E, F, G, H	IPR000936	Alphavirus E2 glycoprotein	Family
E, F, G, H	IPR000930	Peptidase S3, togavirin	Domain
E, F, G, H	IPR002548	Alphavirus E1 glycoprotein	Domain
E, F, G, H	IPR000336	Flavivirus/Alphavirus glycoprotein, immunoglobulin-like domain superfamily	Homologous Superfamily
E, F, G, H	IPR043504	Peptidase S1, PA clan, chymotrypsin-like fold	Homologous Superfamily
A, B, C, D	IPR002533	Alphavirus E3 spike glycoprotein	Domain
A, B, C, D	IPR038055	Flaviviral glycoprotein E, dimerisation domain	Homologous Superfamily
A, B, C, D	IPR014756	Immunoglobulin E-set	Homologous Superfamily
A, B, C, D	IPR042304	Alphavirus E2 glycoprotein, domain A	Homologous Superfamily
A, B, C, D	IPR036253	Flavivirus glycoprotein, central and dimerisation domain superfamily	Homologous Superfamily
A, B, C, D	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A, B, C, D	IPR042305	Alphavirus E2 glycoprotein, domain B	Homologous Superfamily
A, B, C, D	IPR042306	Alphavirus E2 glycoprotein, domain C	Homologous Superfamily
A, B, C, D	IPR000936	Alphavirus E2 glycoprotein	Family
A, B, C, D	IPR000930	Peptidase S3, togavirin	Domain
A, B, C, D	IPR002548	Alphavirus E1 glycoprotein	Domain
A, B, C, D	IPR000336	Flavivirus/Alphavirus glycoprotein, immunoglobulin-like domain superfamily	Homologous Superfamily
A, B, C, D	IPR043504	Peptidase S1, PA clan, chymotrypsin-like fold	Homologous Superfamily