6MEK | pdb_00006mek

Crystal structure of Hepatitis C virus envelope glycoprotein E2 core in complex with human antibodies HEPC3 and HEPC46

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
F	d6mekf_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
I	d6meki_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
G	d6mekg2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
G	d6mekg1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
E	d6meke2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
E	d6meke1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
J [auth L]	d6mekl2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
J [auth L]	d6mekl1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d6mekd2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d6mekd1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d6mekb_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
H	d6mekh_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
F		e6mekF1	A: L-aspartase middle domain-like	X: L-aspartase middle domain-like	H: L-aspartase middle domain-like	T: BacA	F:	ECOD (20:10:01)
I		e6mekI1	A: L-aspartase middle domain-like	X: L-aspartase middle domain-like	H: L-aspartase middle domain-like	T: BacA	F:	ECOD (20:10:01)
G		e6mekG1	A: L-aspartase middle domain-like	X: L-aspartase middle domain-like	H: L-aspartase middle domain-like	T: BacA	F:	ECOD (20:10:01)
E		e6mekE1	A: L-aspartase middle domain-like	X: L-aspartase middle domain-like	H: L-aspartase middle domain-like	T: BacA	F:	ECOD (20:10:01)
J [auth L]		e6mekL1	A: L-aspartase middle domain-like	X: L-aspartase middle domain-like	H: L-aspartase middle domain-like	T: BacA	F:	ECOD (20:10:01)
D		e6mekD1	A: L-aspartase middle domain-like	X: L-aspartase middle domain-like	H: L-aspartase middle domain-like	T: BacA	F:	ECOD (20:10:01)
B		e6mekB1	A: L-aspartase middle domain-like	X: L-aspartase middle domain-like	H: L-aspartase middle domain-like	T: BacA	F:	ECOD (20:10:01)
H		e6mekH1	A: L-aspartase middle domain-like	X: L-aspartase middle domain-like	H: L-aspartase middle domain-like	T: BacA	F:	ECOD (20:10:01)
A		e6mekA1	A: L-aspartase middle domain-like	X: L-aspartase middle domain-like	H: L-aspartase middle domain-like	T: BacA	F:	ECOD (20:10:01)
C		e6mekC1	A: L-aspartase middle domain-like	X: L-aspartase middle domain-like	H: L-aspartase middle domain-like	T: TipAS	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
F	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
I	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
G	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)
J [auth L]	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)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
H	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
F, I	Heavy Chain	IGHV1	-	e2 glycoprotein	SAbDab (2026-03-13)
E, G	Light Chain	IGLV1	Lambda	e2 glycoprotein	SAbDab (2026-03-13)
D, J [auth L]	Light Chain	IGKV1	Kappa	e2 glycoprotein	SAbDab (2026-03-13)
B, H	Heavy Chain	IGHV1	-	e2 glycoprotein	SAbDab (2026-03-13)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
F, I	HEPC46 Heavy Chain	-	-	-
E, G	HEPC46 Light Chain	-	-	-
D, J [auth L]	HEPC3 Light Chain	-	-	-
B, H	HEPC3 Heavy Chain	-	-	-
A, C	E2 GLYCOPROTEIN	cysteine-type peptidase activity peptidase activity catalytic activity, acting on a protein cysteine-type endopeptidase activity hydrolase activity catalytic activity endopeptidase activity serine hydrolase activity serine-type peptidase activity RNA binding binding nucleic acid binding adenyl ribonucleotide binding nucleotide binding cysteine-type peptidase activity peptidase activity catalytic activity, acting on a protein cysteine-type endopeptidase activity hydrolase activity catalytic activity endopeptidase activity serine hydrolase activity serine-type peptidase activity 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 catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid helicase activity RNA helicase activity ATP-dependent activity, acting on RNA macromolecular conformation isomerase activity ATP-dependent activity structural molecule activity	viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell import into cell receptor-mediated endocytosis of virus by host cell biological process involved in interspecies interaction between organisms transport viral life cycle establishment of localization vesicle-mediated transport biological process involved in interaction with host biological process involved in symbiotic interaction localization symbiont entry into host cell viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell import into cell receptor-mediated endocytosis of virus by host cell biological process involved in interspecies interaction between organisms transport viral life cycle establishment of localization vesicle-mediated transport biological process involved in interaction with host biological process involved in symbiotic interaction localization symbiont entry into host cell clathrin-dependent endocytosis symbiont entry into host cellular process clathrin-dependent endocytosis of virus by host cell receptor-mediated endocytosis endocytosis endocytosis involved in viral entry into host cell transmembrane transport monoatomic ion transmembrane transport monoatomic ion transport virion attachment to host cell adhesion of symbiont to host cell adhesion of symbiont to host proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process symbiont-mediated perturbation of host defense response symbiont-mediated suppression of host immune response symbiont-mediated suppression of host innate immune response symbiont-mediated perturbation of host process symbiont-mediated perturbation of host immune response symbiont-mediated perturbation of host innate immune response modulation of process of another organism symbiont-mediated perturbation of host cellular process symbiont-mediated transformation of host cell	host cellular component host intracellular part cellular anatomical structure host cell cytoplasm host cell part host cell lipid droplet host intracellular region other organism part host cell cytoplasm part host intracellular membrane-bounded organelle host cell membrane host cell mitochondrion host intracellular organelle host cell mitochondrial envelope host cellular component host intracellular part cellular anatomical structure host cell cytoplasm host cell part host cell lipid droplet host intracellular region other organism part host cell cytoplasm part host intracellular membrane-bounded organelle host cell membrane host cell mitochondrion host intracellular organelle host cell mitochondrial envelope host cell mitochondrial membrane host cell plasma membrane virion component virion membrane host cell endoplasmic reticulum host cell endomembrane system host cell endoplasmic reticulum membrane host cell nucleus viral membrane viral envelope protein-containing complex ribonucleoprotein complex viral nucleocapsid viral capsid

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C	IPR002522	Hepatitis C virus, Core protein, N-terminal	Domain
A, C	IPR002521	Hepatitis C virus, Core protein, C-terminal	Domain
A, C	IPR054175	NS3 RNA helicase, C-terminal helical domain	Domain
A, C	IPR042209	Hepatitis C virus non-structural protein NS2, N-terminal domain	Homologous Superfamily
A, C	IPR011492	Non-structural protein NS3-like, DEAD-box helicase, flavivirus	Domain
A, C	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A, C	IPR043504	Peptidase_S1_PA_chymotrypsin	Unknown
A, C	IPR042205	Hepatitis C virus non-structural protein NS2, C-terminal domain	Homologous Superfamily
A, C	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A, C	IPR001650	Helicase, C-terminal domain-like	Domain
A, C	IPR002519	Hepatitis C virus, Envelope glycoprotein E1	Domain
A, C	IPR014001	Helicase superfamily 1/2, ATP-binding domain	Domain
A, C	IPR044896	Hepatitis C virus core protein, chain A superfamily	Homologous Superfamily
A, C	IPR004109	Hepatitis C virus, NS3 protease	Domain
A, C	IPR049913	Hepatitis C virus, p7 channel	Domain
A, C	IPR002531	Hepatitis C virus, Non-structural protein E2/NS1	Domain
A, C	IPR002518	Hepatitis C virus, Non-structural protein NS2	Domain

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.