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- PDB-1bl3: CATALYTIC DOMAIN OF HIV-1 INTEGRASE -

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Basic information

Entry
Database: PDB / ID: 1bl3
TitleCATALYTIC DOMAIN OF HIV-1 INTEGRASE
ComponentsINTEGRASE
KeywordsDNA INTEGRATION / AIDS / POLYPROTEIN / HYDROLASE / ENDONUCLEASE / POLYNUCLEOTIDYL TRANSFERASE / DNA BINDING (VIRAL)
Function / homology
Function and homology information


HIV-1 retropepsin / symbiont-mediated activation of host apoptosis / retroviral ribonuclease H / exoribonuclease H / exoribonuclease H activity / host multivesicular body / DNA integration / viral genome integration into host DNA / RNA-directed DNA polymerase / establishment of integrated proviral latency ...HIV-1 retropepsin / symbiont-mediated activation of host apoptosis / retroviral ribonuclease H / exoribonuclease H / exoribonuclease H activity / host multivesicular body / DNA integration / viral genome integration into host DNA / RNA-directed DNA polymerase / establishment of integrated proviral latency / telomerase activity / viral penetration into host nucleus / RNA stem-loop binding / RNA-DNA hybrid ribonuclease activity / Transferases; Transferring phosphorus-containing groups; Nucleotidyltransferases / host cell / viral nucleocapsid / DNA recombination / DNA-directed DNA polymerase / aspartic-type endopeptidase activity / Hydrolases; Acting on ester bonds / DNA-directed DNA polymerase activity / symbiont-mediated suppression of host gene expression / symbiont entry into host cell / viral translational frameshifting / lipid binding / host cell nucleus / host cell plasma membrane / virion membrane / structural molecule activity / proteolysis / DNA binding / zinc ion binding / membrane
Similarity search - Function
Ribonuclease H-like superfamily/Ribonuclease H / Reverse transcriptase connection / Reverse transcriptase connection domain / Reverse transcriptase thumb / Reverse transcriptase thumb domain / Integrase Zinc binding domain / Zinc finger integrase-type profile. / Integrase-like, N-terminal / Integrase DNA binding domain / Integrase, C-terminal domain superfamily, retroviral ...Ribonuclease H-like superfamily/Ribonuclease H / Reverse transcriptase connection / Reverse transcriptase connection domain / Reverse transcriptase thumb / Reverse transcriptase thumb domain / Integrase Zinc binding domain / Zinc finger integrase-type profile. / Integrase-like, N-terminal / Integrase DNA binding domain / Integrase, C-terminal domain superfamily, retroviral / Integrase, N-terminal zinc-binding domain / Integrase, C-terminal, retroviral / Integrase DNA binding domain profile. / Immunodeficiency lentiviral matrix, N-terminal / gag gene protein p17 (matrix protein) / RNase H / Integrase core domain / Integrase, catalytic core / Integrase catalytic domain profile. / Retropepsin-like catalytic domain / Matrix protein, lentiviral and alpha-retroviral, N-terminal / Retroviral nucleocapsid Gag protein p24, C-terminal domain / Gag protein p24 C-terminal domain / RNase H type-1 domain profile. / Ribonuclease H domain / Retropepsins / Retroviral aspartyl protease / Aspartyl protease, retroviral-type family profile. / Peptidase A2A, retrovirus, catalytic / Reverse transcriptase domain / Reverse transcriptase (RNA-dependent DNA polymerase) / Reverse transcriptase (RT) catalytic domain profile. / Retrovirus capsid, C-terminal / Retroviral matrix protein / Retrovirus capsid, N-terminal / zinc finger / Zinc knuckle / Zinc finger, CCHC-type superfamily / Zinc finger, CCHC-type / Zinc finger CCHC-type profile. / Nucleotidyltransferase; domain 5 / Aspartic peptidase, active site / Eukaryotic and viral aspartyl proteases active site. / Aspartic peptidase domain superfamily / Ribonuclease H superfamily / Ribonuclease H-like superfamily / Reverse transcriptase/Diguanylate cyclase domain / DNA/RNA polymerase superfamily / 2-Layer Sandwich / Alpha Beta
Similarity search - Domain/homology
Biological speciesHuman immunodeficiency virus 1
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2 Å
AuthorsMaignan, S. / Guilloteau, J.P. / Zhou-Liu, Q. / Clement-Mella, C. / Mikol, V.
Citation
Journal: J.Mol.Biol. / Year: 1998
Title: Crystal structures of the catalytic domain of HIV-1 integrase free and complexed with its metal cofactor: high level of similarity of the active site with other viral integrases.
Authors: Maignan, S. / Guilloteau, J.P. / Zhou-Liu, Q. / Clement-Mella, C. / Mikol, V.
#1: Journal: Science / Year: 1994
Title: Crystal Structure of the Catalytic Domain of HIV-1 Integrase: Similarity to Other Polynucleotidyl Transferases
Authors: Dyda, F. / Hickman, A.B. / Jenkins, T.M. / Engelman, A. / Craigie, R. / Davies, D.R.
History
DepositionJul 23, 1998Processing site: BNL
Revision 1.0Sep 30, 1998Provider: repository / Type: Initial release
Revision 1.1Mar 24, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Nov 3, 2021Group: Database references / Derived calculations / Other
Category: database_2 / pdbx_database_status ...database_2 / pdbx_database_status / pdbx_struct_conn_angle / struct_conn / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_database_status.process_site / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.4Aug 2, 2023Group: Refinement description / Category: pdbx_initial_refinement_model
Revision 1.5May 22, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: INTEGRASE
B: INTEGRASE
C: INTEGRASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)52,7596
Polymers52,6863
Non-polymers733
Water2,702150
1
A: INTEGRASE
B: INTEGRASE
C: INTEGRASE
hetero molecules

A: INTEGRASE
B: INTEGRASE
C: INTEGRASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)105,51812
Polymers105,3726
Non-polymers1466
Water1086
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation4_555-x+1/2,y+1/2,-z1
Unit cell
Length a, b, c (Å)99.100, 72.500, 79.400
Angle α, β, γ (deg.)90.00, 108.00, 90.00
Int Tables number5
Space group name H-MC121

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Components

#1: Protein INTEGRASE


Mass: 17562.051 Da / Num. of mol.: 3 / Fragment: CATALYTIC CORE DOMAIN 50 - 212 / Mutation: F185H
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human immunodeficiency virus 1 / Genus: Lentivirus / Cell line: BL21 / Plasmid: PET-15B / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21 (DE3) / References: UniProt: P12497
#2: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Mg
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 150 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 1.92 Å3/Da / Density % sol: 36.8 %
Crystal growpH: 7.5
Details: 435MM SODIUM CITRATE, 50MM HEPES-HCL PH 7.5, 7.5MM DTT, [PROTEIN]=0.13MM
Crystal grow
*PLUS
Temperature: 19 ℃ / Method: vapor diffusion
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
10.13 mMprotein1drop
225 mMMes/NaOH1drop
325 mM1dropNaCl
410 mMdithiothreitol1drop
5435 mMsodium citrate1drop
650 mMHEPES-HCl1drop
7870 mMsodium citrate1reservoir
8100 mMHEPES-HCl1reservoir
910 mMdithiothreitol1reservoir

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Data collection

DiffractionMean temperature: 298 K
Diffraction sourceSource: ROTATING ANODE / Type: ENRAF-NONIUS FR591 / Wavelength: 1.5418
DetectorType: MAC Science DIP-2000 / Detector: IMAGE PLATE / Details: DOUBLE FOCUSSING MIRRORS
RadiationMonochromator: NI FILTER / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2→20 Å / Num. obs: 34702 / % possible obs: 95.7 % / Observed criterion σ(I): 0 / Redundancy: 3.3 % / Rmerge(I) obs: 0.045 / Rsym value: 0.045 / Net I/σ(I): 8
Reflection shellResolution: 2→2.07 Å / Redundancy: 3.5 % / Rmerge(I) obs: 0.202 / Rsym value: 0.202 / % possible all: 91.1
Reflection shell
*PLUS
% possible obs: 91.1 %

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Processing

Software
NameVersionClassification
X-PLOR3.851model building
X-PLOR3.851refinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLOR3.851phasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1ITG

1itg


Resolution: 2→20 Å / Data cutoff high absF: 10000000 / Data cutoff low absF: 0.001 / Cross valid method: THROUGHOUT / σ(F): 0
RfactorNum. reflection% reflectionSelection details
Rfree0.279 2349 7 %RANDOM
Rwork0.216 ---
obs0.216 33565 95.7 %-
Displacement parametersBiso mean: 34.5 Å2
Refinement stepCycle: LAST / Resolution: 2→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3299 0 3 150 3452
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.007
X-RAY DIFFRACTIONx_bond_d_na
X-RAY DIFFRACTIONx_bond_d_prot
X-RAY DIFFRACTIONx_angle_d
X-RAY DIFFRACTIONx_angle_d_na
X-RAY DIFFRACTIONx_angle_d_prot
X-RAY DIFFRACTIONx_angle_deg1.2
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it
X-RAY DIFFRACTIONx_mcangle_it
X-RAY DIFFRACTIONx_scbond_it
X-RAY DIFFRACTIONx_scangle_it
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMTOPHCSDX.PRO
X-RAY DIFFRACTION2
Software
*PLUS
Name: X-PLOR / Version: 3.851 / Classification: refinement
Refinement
*PLUS
Solvent computation
*PLUS
Displacement parameters
*PLUS

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