5EU7 | pdb_00005eu7

Crystal structure of HIV-1 integrase catalytic core in complex with Fab

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
SAbDab Antibody Annotation
Protein Family 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 [auth C]	d5eu7c2	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 C]	d5eu7c1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
E [auth D]	d5eu7d2	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)
E [auth D]	d5eu7d1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D [auth F]	d5eu7f_	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 E]	d5eu7e_	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)
B	d5eu7b_	Alpha and beta proteins (a/b)	Ribonuclease H-like motif	Ribonuclease H-like	Retroviral integrase, catalytic domain	Retroviral integrase, catalytic domain	HIV-1 (Human immunodeficiency virus 1 ) [TaxId: 11676 ],	SCOPe (2.08)
A	d5eu7a_	Alpha and beta proteins (a/b)	Ribonuclease H-like motif	Ribonuclease H-like	Retroviral integrase, catalytic domain	Retroviral integrase, catalytic domain	HIV-1 (Human immunodeficiency virus 1 ) [TaxId: 11676 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	Ribonuclease H-like	8068087	3000143	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Ribonuclease H-like	8068087	3000143	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
F [auth C]	PPP2R1A-like_HEAT, VPS15-like_hel	e5eu7C1	A: alpha bundles	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: PPP2R1A-like_HEAT, VPS15-like_hel	ECOD (develop294)
E [auth D]	PPP2R1A-like_HEAT, VPS15-like_hel	e5eu7D1	A: alpha bundles	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: PPP2R1A-like_HEAT, VPS15-like_hel	ECOD (develop294)
D [auth F]	PPP2R1A-like_HEAT, VPS15-like_hel	e5eu7F1	A: alpha bundles	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: PPP2R1A-like_HEAT, VPS15-like_hel	ECOD (develop294)
C [auth E]	PPP2R1A-like_HEAT, VPS15-like_hel	e5eu7E1	A: alpha bundles	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: PPP2R1A-like_HEAT, VPS15-like_hel	ECOD (develop294)
B	PPP2R1A-like_HEAT, VPS15-like_hel	e5eu7B1	A: alpha bundles	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: PPP2R1A-like_HEAT, VPS15-like_hel	ECOD (develop294)
A	PPP2R1A-like_HEAT, VPS15-like_hel	e5eu7A1	A: alpha bundles	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: PPP2R1A-like_HEAT, VPS15-like_hel	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
F [auth C]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
E [auth D]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D [auth F]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C [auth E]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B	3.30.420.10	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	CATH (4.3.0)
A	3.30.420.10	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	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 [auth D], F [auth C]	Antibody Fab Fragment	L-KAPPA	Homo sapiens (human)	IGKV1-3901, IGKV1D-3901, IGKJ101, IGKC01	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-1_KAPPA	IMGT (202610-0)
C [auth E], D [auth F]	Antibody Fab Fragment	VH-CH1	Homo sapiens (human)	IGHV3-6601, IGHV3-6602, IGHV3-6604, IGHJ401, IGHJ402, IGHJ403, IGHG101, IGHG102, IGHG104, IGHG105, IGHG112, IGHG114, IGHG113, IGHG109, IGHG110, IGHG107, IGHG1*11	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_KAPPA	IMGT (202610-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
E [auth D], F [auth C]	Light Chain	IGKV1	Kappa	integrase	SAbDab (2026-03-20)
C [auth E], D [auth F]	Heavy Chain	IGHV3	-	integrase	SAbDab (2026-03-20)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00665	Integrase core domain (rve)	Integrase core domain	Integrase mediates integration of a DNA copy of the viral genome into the host chromosome. Integrase is composed of three domains. The amino-terminal domain is a zinc binding domain Pfam:PF02022. This domain is the central catalytic domain. The ca ...	Integrase mediates integration of a DNA copy of the viral genome into the host chromosome. Integrase is composed of three domains. The amino-terminal domain is a zinc binding domain Pfam:PF02022. This domain is the central catalytic domain. The carboxyl terminal domain that is a non-specific DNA binding domain Pfam:PF00552. The catalytic domain acts as an endonuclease when two nucleotides are removed from the 3' ends of the blunt-ended viral DNA made by reverse transcription. This domain also catalyses the DNA strand transfer reaction of the 3' ends of the viral DNA to the 5' ends of the integration site [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E [auth D], F [auth C]	FAB light chain	-	-	-
C [auth E], D [auth F]	FAB Heavy Chain	-	-	-
A, B	Integrase	catalytic activity, acting on RNA RNA exonuclease activity, producing 5'-phosphomonoesters catalytic activity, acting on a nucleic acid RNA exonuclease activity RNA nuclease activity hydrolase activity hydrolase activity, acting on ester bonds nuclease activity exoribonuclease H activity exonuclease activity catalytic activity catalytic activity, acting on DNA DNA-directed DNA polymerase activity DNA polymerase activity catalytic activity, acting on RNA RNA exonuclease activity, producing 5'-phosphomonoesters catalytic activity, acting on a nucleic acid RNA exonuclease activity RNA nuclease activity hydrolase activity hydrolase activity, acting on ester bonds nuclease activity exoribonuclease H activity exonuclease activity catalytic activity catalytic activity, acting on DNA DNA-directed DNA polymerase activity DNA polymerase activity transferase activity nucleotidyltransferase activity transferase activity, transferring phosphorus-containing groups DNA binding binding nucleic acid binding RNA-directed DNA polymerase activity RNA binding RNA stem-loop binding identical protein binding protein binding peptidase activity catalytic activity, acting on a protein integrase activity aspartic-type peptidase activity aspartic-type endopeptidase activity endopeptidase activity lipid binding endonuclease activity RNA endonuclease activity producing 5'-phosphomonoesters, hydrolytic mechanism RNA-DNA hybrid ribonuclease activity RNA endonuclease activity structural molecule activity cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding	symbiont-mediated perturbation of host cellular process symbiont-mediated suppression of host gene expression biological process involved in interspecies interaction between organisms symbiont-mediated perturbation of host process symbiont-mediated perturbation of host gene expression modulation of process of another organism biological process involved in interaction with host biological process involved in symbiotic interaction viral process viral life cycle symbiont entry into host cell symbiont entry into host viral genome integration into host DNA viral penetration into host nucleus symbiont-mediated perturbation of host cellular process symbiont-mediated suppression of host gene expression biological process involved in interspecies interaction between organisms symbiont-mediated perturbation of host process symbiont-mediated perturbation of host gene expression modulation of process of another organism biological process involved in interaction with host biological process involved in symbiotic interaction viral process viral life cycle symbiont entry into host cell symbiont entry into host viral genome integration into host DNA viral penetration into host nucleus intracellular transport of virus transport of virus establishment of integrated proviral latency viral latency establishment of viral latency viral gene expression viral translational frameshifting viral translation primary metabolic process gene expression macromolecule biosynthetic process protein maturation biosynthetic process proteolysis protein processing metabolic process cellular process protein metabolic process macromolecule metabolic process nucleobase-containing compound metabolic process DNA recombination DNA metabolic process nucleic acid metabolic process regulation of biological process symbiont-mediated activation of host programmed cell death regulation of cellular process symbiont-mediated activation of host apoptosis symbiont-mediated perturbation of host programmed cell death biological regulation regulation of killing of cells of another organism disruption of cell in another organism regulation of cell killing symbiont-mediated perturbation of host apoptosis disruption of anatomical structure in another organism symbiont-mediated killing of host cell killing of cells of another organism cell killing	host intracellular membrane-bounded organelle host cellular component host intracellular part host multivesicular body other organism part host cell cytoplasm part host intracellular organelle cellular anatomical structure host cell cytoplasm host cell part host cell late endosome host cell endosome host intracellular region viral nucleocapsid host intracellular membrane-bounded organelle host cellular component host intracellular part host multivesicular body other organism part host cell cytoplasm part host intracellular organelle cellular anatomical structure host cell cytoplasm host cell part host cell late endosome host cell endosome host intracellular region viral nucleocapsid viral capsid virion component host cell plasma membrane host cell membrane host cell virion membrane host cell nucleus

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR036397	Ribonuclease H superfamily	Homologous Superfamily
A, B	IPR043128	Reverse transcriptase/Diguanylate cyclase domain	Homologous Superfamily
A, B	IPR001995	Peptidase A2A, retrovirus, catalytic	Domain
A, B	IPR001878	Zinc finger, CCHC-type	Domain
A, B	IPR008919	Retrovirus capsid, N-terminal	Homologous Superfamily
A, B	IPR012344	Matrix protein, lentiviral and alpha-retroviral, N-terminal	Homologous Superfamily
A, B	IPR036862	Integrase, C-terminal domain superfamily, retroviral	Homologous Superfamily
A, B	IPR018061	Retropepsins	Domain
A, B	IPR010661	Reverse transcriptase thumb	Domain
A, B	IPR002156	Ribonuclease H domain	Domain
A, B	IPR036875	Zinc finger, CCHC-type superfamily	Homologous Superfamily
A, B	IPR003308	Integrase, N-terminal zinc-binding domain	Domain
A, B	IPR001584	Integrase, catalytic core	Domain
A, B	IPR045345	Retroviral nucleocapsid Gag protein p24, C-terminal domain	Domain
A, B	IPR010999	Retroviral matrix protein	Homologous Superfamily
A, B	IPR021109	Aspartic peptidase domain superfamily	Homologous Superfamily
A, B	IPR001969	Aspartic peptidase, active site	Active Site
A, B	IPR012337	Ribonuclease H-like superfamily	Homologous Superfamily
A, B	IPR017856	Integrase-like, N-terminal	Homologous Superfamily
A, B	IPR000071	Immunodeficiency lentiviral matrix, N-terminal	Domain
A, B	IPR043502	DNA/RNA polymerase superfamily	Homologous Superfamily
A, B	IPR001037	Integrase, C-terminal, retroviral	Domain
A, B	IPR034170	Retropepsin-like catalytic domain	Domain
A, B	IPR000477	Reverse transcriptase domain	Domain
A, B	IPR010659	Reverse transcriptase connection	Domain
A, B	IPR008916	Retrovirus capsid, C-terminal	Homologous Superfamily