3TNN | pdb_00003tnn

Crystal structure of N5-i5 Fab, an ADCC mediating and non-neutralizing CD4i anti-HIV- 1 antibody.

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 F]	d3tnnf2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
H [auth F]	d3tnnf1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
F [auth D]	d3tnnd2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
F [auth D]	d3tnnd1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D [auth B]	d3tnnb2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D [auth B]	d3tnnb1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B [auth L]	d3tnnl2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B [auth L]	d3tnnl1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
G [auth E]	d3tnne_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
E [auth C]	d3tnnc_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C [auth A]	d3tnna_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A [auth H]	d3tnnh_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	human (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 F]	V-set	e3tnnF1	A: alpha bundles	X: beta-Grasp	H: HTH	T: winged helix domain	F: V-set	ECOD (develop294)
F [auth D]	V-set	e3tnnD1	A: alpha bundles	X: beta-Grasp	H: HTH	T: winged helix domain	F: V-set	ECOD (develop294)
D [auth B]	V-set	e3tnnB1	A: alpha bundles	X: beta-Grasp	H: HTH	T: winged helix domain	F: V-set	ECOD (develop294)
B [auth L]	Avidin	e3tnnL1	A: alpha bundles	X: Globin-like	H: Nucleoside diphosphate kinases	T: Nucleoside diphosphate kinases	F: Avidin	ECOD (develop294)
G [auth E]	V-set	e3tnnE1	A: alpha bundles	X: beta-Grasp	H: HTH	T: winged helix domain	F: V-set	ECOD (develop294)
G [auth E]	V-set	e3tnnE3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F: V-set	ECOD (develop294)
E [auth C]	V-set	e3tnnC1	A: alpha bundles	X: beta-Grasp	H: HTH	T: winged helix domain	F: V-set	ECOD (develop294)
E [auth C]	V-set	e3tnnC3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F: V-set	ECOD (develop294)
C [auth A]	V-set	e3tnnA1	A: alpha bundles	X: beta-Grasp	H: HTH	T: winged helix domain	F: V-set	ECOD (develop294)
C [auth A]	V-set	e3tnnA3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F: V-set	ECOD (develop294)
A [auth H]	Avidin	e3tnnH1	A: alpha bundles	X: Globin-like	H: Nucleoside diphosphate kinases	T: Nucleoside diphosphate kinases	F: Avidin	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
H [auth F]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
F [auth D]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D [auth B]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B [auth L]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
G [auth E]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
E [auth C]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C [auth A]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A [auth H]	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 [auth L], D [auth B], F [auth D], H [auth F]	N5-i5 Fab, anti-HIV1	L-LAMBDA	Homo sapiens (human)	IGLV2-2302, IGLJ201, IGLJ302, IGLJ301, IGLC201, IGLC202, IGLC3*04	V-DOMAIN V-LAMBDA, C-DOMAIN C-LAMBDA	IG	FAB-GAMMA-1_LAMBDA	IMGT (202610-0)
A [auth H], C [auth A], E [auth C], G [auth E]	N5-i5 Fab, anti-HIV1	VH-CH1	Homo sapiens (human)	IGHV3-2304, IGHJ401, IGHJ402, IGHJ403, IGHG101, IGHG102, IGHG103, IGHG104	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_LAMBDA	IMGT (202610-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth L], D [auth B], F [auth D], H [auth F]	Light Chain	IGLV2	Lambda	-	SAbDab (2026-03-20)
A [auth H], C [auth A], E [auth C], G [auth E]	Heavy Chain	IGHV3	-	-	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.