4LLV | pdb_00004llv

The structure of the unbound form of anti-HIV antibody 4E10 Fv

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
SAbDab Antibody Annotation

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
H [auth L]	d4llvl1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
H [auth L]	d4llvl2	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
F	d4llvf_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d4llvd_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d4llvb1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d4llvb2	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
G [auth H]	d4llvh_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
E	d4llve_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d4llvc_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d4llva_	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)
H [auth L]	PK_Tyr_Ser-Thr	e4llvL1	A: alpha bundles	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Phosphofructokinase N-terminal domain	F: PK_Tyr_Ser-Thr	ECOD (develop294)
F	PK_Tyr_Ser-Thr	e4llvF1	A: alpha bundles	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Phosphofructokinase N-terminal domain	F: PK_Tyr_Ser-Thr	ECOD (develop294)
D	PK_Tyr_Ser-Thr	e4llvD1	A: alpha bundles	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Phosphofructokinase N-terminal domain	F: PK_Tyr_Ser-Thr	ECOD (develop294)
B	PK_Tyr_Ser-Thr	e4llvB1	A: alpha bundles	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Phosphofructokinase N-terminal domain	F: PK_Tyr_Ser-Thr	ECOD (develop294)
G [auth H]	PK_Tyr_Ser-Thr	e4llvH1	A: alpha bundles	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Phosphofructokinase N-terminal domain	F: PK_Tyr_Ser-Thr	ECOD (develop294)
E	PK_Tyr_Ser-Thr	e4llvE1	A: alpha bundles	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Phosphofructokinase N-terminal domain	F: PK_Tyr_Ser-Thr	ECOD (develop294)
C	PK_Tyr_Ser-Thr	e4llvC1	A: alpha bundles	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Phosphofructokinase N-terminal domain	F: PK_Tyr_Ser-Thr	ECOD (develop294)
A	PK_Tyr_Ser-Thr	e4llvA1	A: alpha bundles	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Phosphofructokinase N-terminal domain	F: PK_Tyr_Ser-Thr	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
H [auth L]	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)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
G [auth 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)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	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
B, D, F, H [auth L]	4E10 mAb, anti-gp41 membrane-proximal external region (MPER)	V-KAPPA	Homo sapiens (human)	IGKV3-2001, IGKJ101	V-DOMAIN V-KAPPA	IG	FV-HEAVY_KAPPA	IMGT (202610-0)
A, C, E, G [auth H]	4E10 mAb, anti-gp41 membrane-proximal external region (MPER)	VH	Homo sapiens (human)	IGHV1-6910, IGHJ101	V-DOMAIN VH	IG	FV-HEAVY_KAPPA	IMGT (202610-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B, D, F, H [auth L]	Light Chain	IGKV3	Kappa	-	SAbDab (2026-03-20)
A, C, E, G [auth H]	Heavy Chain	IGHV1	-	-	SAbDab (2026-03-20)

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.