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- PDB-3tkg: crystal structure of HIV model protease precursor/saquinavir complex -

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Basic information

Entry
Database: PDB / ID: 3tkg
Titlecrystal structure of HIV model protease precursor/saquinavir complex
ComponentsProtease
KeywordsHYDROLASE/HYDROLASE INHIBITOR / Hydrolase / HYDROLASE-HYDROLASE INHIBITOR complex
Function / homology
Function and homology information


RNA-directed DNA polymerase activity / telomerase activity / 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 activity / telomerase activity / 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 / 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
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 ...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 / Cathepsin D, subunit A; domain 1 / Acid Proteases / Retrovirus capsid, N-terminal / zinc finger / Zinc knuckle / Zinc finger, CCHC-type superfamily / Zinc finger, CCHC-type / Zinc finger CCHC-type profile. / 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 / Beta Barrel / Mainly Beta
Similarity search - Domain/homology
Saquinavir / Chem-ROC / Gag-Pol polyprotein / Gag-Pol polyprotein
Similarity search - Component
Biological speciesHuman immunodeficiency virus type 1
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.36 Å
AuthorsAgniswamy, J. / Sayer, J. / Weber, I. / Louis, J.
CitationJournal: Biochemistry / Year: 2012
Title: Terminal interface conformations modulate dimer stability prior to amino terminal autoprocessing of HIV-1 protease.
Authors: Agniswamy, J. / Sayer, J.M. / Weber, I.T. / Louis, J.M.
History
DepositionAug 26, 2011Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 25, 2012Provider: repository / Type: Initial release
Revision 1.1Dec 12, 2012Group: Other
Revision 1.2Nov 8, 2017Group: Refinement description / Category: software / Item: _software.name
Revision 1.3Sep 13, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2 / entity / pdbx_entity_nonpoly / pdbx_initial_refinement_model / struct_ref_seq_dif / struct_site
Item: _chem_comp.name / _chem_comp.pdbx_synonyms ..._chem_comp.name / _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _entity.pdbx_description / _pdbx_entity_nonpoly.name / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Protease
B: Protease
C: Protease
D: Protease
hetero molecules


Theoretical massNumber of molelcules
Total (without water)46,52011
Polymers44,9454
Non-polymers1,5767
Water4,684260
1
A: Protease
B: Protease
hetero molecules


Theoretical massNumber of molelcules
Total (without water)23,3066
Polymers22,4722
Non-polymers8344
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area3640 Å2
ΔGint-23 kcal/mol
Surface area10170 Å2
MethodPISA
2
C: Protease
D: Protease
hetero molecules


Theoretical massNumber of molelcules
Total (without water)23,2145
Polymers22,4722
Non-polymers7423
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area3590 Å2
ΔGint-23 kcal/mol
Surface area10400 Å2
MethodPISA
Unit cell
Length a, b, c (Å)80.074, 88.940, 60.168
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein
Protease


Mass: 11236.203 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human immunodeficiency virus type 1 / Gene: gag-pol / Production host: Escherichia coli (E. coli) / Strain (production host): BL21(DE3)
References: UniProt: P03367, UniProt: P03366*PLUS, HIV-1 retropepsin
#2: Chemical
ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Cl
#3: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C3H8O3
#4: Chemical ChemComp-ROC / (2S)-N-[(2S,3R)-4-[(2S,3S,4aS,8aS)-3-(tert-butylcarbamoyl)-3,4,4a,5,6,7,8,8a-octahydro-1H-isoquinolin-2-yl]-3-hydroxy-1 -phenyl-butan-2-yl]-2-(quinolin-2-ylcarbonylamino)butanediamide / Fortovase / SAQUINAVIR / RO 31-8959


Type: peptide-like, Peptide-like / Class: Inhibitor / Mass: 670.841 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C38H50N6O5 / References: Saquinavir / Comment: medication, antiretroviral*YM
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 260 / 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: 2.38 Å3/Da / Density % sol: 48.39 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 4.8
Details: 0.65M Ammonium Chloride, 0.1M Sodium Acetate, pH 4.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 22-ID / Wavelength: 0.8 Å
DetectorType: MARMOSAIC 300 mm CCD / Detector: CCD / Date: Apr 29, 2011
RadiationMonochromator: Si 220 / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.8 Å / Relative weight: 1
ReflectionResolution: 1.36→50 Å / Num. all: 87215 / Num. obs: 87215 / % possible obs: 93.5 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 6.6 % / Rmerge(I) obs: 0.049 / Net I/σ(I): 34.1
Reflection shell
Resolution (Å)Redundancy (%)Rmerge(I) obsMean I/σ(I) obsNum. unique allDiffraction-ID% possible all
1.36-1.413.10.4592.65493159.7
1.41-1.474.10.3843.68233189.5
1.47-1.535.70.3435.48909196.7
1.53-1.6170.2518.99009197.4
1.61-1.717.60.17713.79081197.8
1.71-1.857.60.11220.59103198.3

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Processing

Software
NameClassification
SERGUIdata collection
PHASERphasing
SHELXL-97refinement
HKL-2000data reduction
HKL-2000data scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 3OXC

3oxc


Resolution: 1.36→10 Å / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflectionSelection details
Rfree0.214 4335 RANDOM
Rwork0.16 --
all0.1629 86762 -
obs0.1629 86762 -
Refinement stepCycle: LAST / Resolution: 1.36→10 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3096 0 108 260 3464
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONs_bond_d0.01
X-RAY DIFFRACTIONs_angle_d0.03

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