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- PDB-1mt8: Viability of a drug-resistant HIV-1 protease mutant: structural i... -

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Basic information

Entry
Database: PDB / ID: 1mt8
TitleViability of a drug-resistant HIV-1 protease mutant: structural insights for better antiviral therapy
Components
  • Capsid-p2 substrate peptide of HIV-1 Gag polyprotein
  • PROTEASE RETROPEPSIN
KeywordsHYDROLASE/HYDROLASE SUBSTRATE / Matrix / Capsid / Gag cleavage / drug resistance / substrate recognition / HYDROLASE-HYDROLASE SUBSTRATE complex
Function / homology
Function and homology information


viral budding via host ESCRT complex / RNA stem-loop binding / host cell / HIV-1 retropepsin / retroviral ribonuclease H / exoribonuclease H / exoribonuclease H activity / host multivesicular body / DNA integration / RNA-directed DNA polymerase ...viral budding via host ESCRT complex / RNA stem-loop binding / host cell / HIV-1 retropepsin / retroviral ribonuclease H / exoribonuclease H / exoribonuclease H activity / host multivesicular body / DNA integration / RNA-directed DNA polymerase / viral genome integration into host DNA / viral penetration into host nucleus / establishment of integrated proviral latency / RNA-directed DNA polymerase activity / RNA-DNA hybrid ribonuclease activity / Transferases; Transferring phosphorus-containing groups; Nucleotidyltransferases / symbiont-mediated suppression of host gene expression / viral nucleocapsid / DNA recombination / Hydrolases; Acting on ester bonds / DNA-directed DNA polymerase / aspartic-type endopeptidase activity / DNA-directed DNA polymerase activity / symbiont entry into host cell / lipid binding / host cell nucleus / host cell plasma membrane / virion membrane / structural molecule activity / proteolysis / DNA binding / RNA binding / zinc ion binding / membrane / plasma membrane / cytoplasm
Similarity search - Function
Gag protein p6 / Gag protein p6 / 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 ...Gag protein p6 / Gag protein p6 / 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. / Retroviral nucleocapsid Gag protein p24, C-terminal domain / Gag protein p24 C-terminal domain / Retropepsin-like catalytic domain / Matrix protein, lentiviral and alpha-retroviral, N-terminal / Ribonuclease H domain / RNase H type-1 domain profile. / Reverse transcriptase (RNA-dependent DNA polymerase) / Reverse transcriptase domain / Reverse transcriptase (RT) catalytic domain profile. / Retropepsins / Retroviral aspartyl protease / Aspartyl protease, retroviral-type family profile. / Peptidase A2A, retrovirus, catalytic / Retrovirus capsid, C-terminal / Retroviral matrix protein / Retrovirus capsid, N-terminal / zinc finger / Zinc knuckle / Zinc finger, CCHC-type superfamily / Cathepsin D, subunit A; domain 1 / Acid Proteases / Zinc finger, CCHC-type / Zinc finger CCHC-type profile. / Aspartic peptidase, active site / Eukaryotic and viral aspartyl proteases active site. / Ribonuclease H superfamily / Aspartic peptidase domain superfamily / Ribonuclease H-like superfamily / Reverse transcriptase/Diguanylate cyclase domain / DNA/RNA polymerase superfamily / Beta Barrel / Mainly Beta
Similarity search - Domain/homology
ACETATE ION / Gag-Pol polyprotein / Gag polyprotein
Similarity search - Component
Biological speciesHuman immunodeficiency virus 1
MethodX-RAY DIFFRACTION / FOURIER SYNTHESIS / Resolution: 2.15 Å
AuthorsPrabu-Jeyabalan, M. / Nalivaika, E.A. / King, N.M. / Schiffer, C.A.
Citation
Journal: J.Virol. / Year: 2003
Title: Viability of drug-resistant human immunodeficiency virus type 1 protease variant: structural insights for better antiviral therapy
Authors: Prabu-Jeyabalan, M. / Nalivaika, E.A. / King, N.M. / Schiffer, C.A.
#1: Journal: J.Mol.Biol. / Year: 2000
Title: How does a symmetric dimer recognize an asymmetric substrate? A substrate complex of HIV-1 protease
Authors: Prabu-Jeyabalan, M. / Nalivaika, E.A. / Schiffer, C.A.
#2: Journal: Structure / Year: 2002
Title: Substrate shape determines specificity of recognition for HIV-1 protease: Analysis of crystal structures of six substrate complexes
Authors: Prabu-Jeyabalan, M. / Nalivaika, E.A. / Schiffer, C.A.
#3: Journal: Protein Sci. / Year: 2002
Title: Lack of synergy for inhibitors targeting a multi-drug resistant HIV-1 protease
Authors: King, N.M. / Melnick, L. / Prabu-Jeyabalan, M. / Nalivaika, E.A. / Yang, S.-S. / Gao, Y. / Nie, X. / Zepp, C. / Heefner, D.L. / Schiffer, C.A.
History
DepositionSep 20, 2002Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jan 7, 2003Provider: repository / Type: Initial release
Revision 1.1Apr 28, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 11, 2017Group: Refinement description / Category: software
Revision 1.4Feb 14, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / 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 / _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

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Assembly

Deposited unit
A: PROTEASE RETROPEPSIN
B: PROTEASE RETROPEPSIN
P: Capsid-p2 substrate peptide of HIV-1 Gag polyprotein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)22,8006
Polymers22,6233
Non-polymers1773
Water1,04558
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area5740 Å2
ΔGint-33 kcal/mol
Surface area9200 Å2
MethodPISA
Unit cell
Length a, b, c (Å)51.556, 59.378, 61.868
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Cell settingorthorhombic
Space group name H-MP212121

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Components

#1: Protein PROTEASE RETROPEPSIN / E.C.3.4.23.16 / HIV-1 PROTEASE


Mass: 10772.724 Da / Num. of mol.: 2 / Mutation: Q7K, D25N, L63P, V82A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human immunodeficiency virus 1 / Genus: Lentivirus / Plasmid: pXC35-pEN18 / Production host: Escherichia coli (E. coli) / Strain (production host): TAP106 / References: UniProt: P03369, HIV-1 retropepsin
#2: Protein/peptide Capsid-p2 substrate peptide of HIV-1 Gag polyprotein


Mass: 1077.298 Da / Num. of mol.: 1 / Source method: obtained synthetically
Details: This peptide sequence occurs naturally in Gag of HIV-1
References: UniProt: Q9YX54
#3: Chemical ChemComp-ACT / ACETATE ION / Acetate


Mass: 59.044 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C2H3O2
#4: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 58 / 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: 2.09 Å3/Da / Density % sol: 41.2 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 6.2
Details: sodium phosphate, sodium citrate, ammonium sulphate, pH 6.2, VAPOR DIFFUSION, HANGING DROP at 298K
Crystal grow
*PLUS
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetails
12.5 mg/mlprotein1drop
2126 mMphosphate1reservoirpH6.2
363 mMsodium citrate1reservoir
428-31 %ammonium sulfate1reservoir

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Data collection

DiffractionMean temperature: 298 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU / Wavelength: 1.5418 Å
DetectorType: RIGAKU RAXIS IV / Detector: IMAGE PLATE / Date: Nov 3, 1999 / Details: Yale mirrors
RadiationMonochromator: Yale Mirrors / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.15→32.95 Å / Num. all: 10094 / Num. obs: 10094 / % possible obs: 93.2 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Biso Wilson estimate: 23 Å2 / Rmerge(I) obs: 0.074 / Net I/σ(I): 7.5
Reflection shellResolution: 2.15→2.23 Å / Rmerge(I) obs: 0.31 / Num. unique all: 834 / % possible all: 76
Reflection
*PLUS
Num. measured all: 25200
Reflection shell
*PLUS
% possible obs: 76 % / Num. unique obs: 834

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Processing

Software
NameClassification
SCALEPACKdata scaling
CNSrefinement
CNSphasing
RefinementMethod to determine structure: FOURIER SYNTHESIS
Starting model: 1MTR

1mtr


Resolution: 2.15→32.95 Å / Rfactor Rfree error: 0.012 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.243 807 8 %RANDOM
Rwork0.208 ---
obs0.208 10094 93.2 %-
all-10094 --
Solvent computationSolvent model: FLAT MODEL / Bsol: 75.9354 Å2 / ksol: 0.348046 e/Å3
Displacement parametersBiso mean: 34.8 Å2
Baniso -1Baniso -2Baniso -3
1--4.47 Å20 Å20 Å2
2---1.7 Å20 Å2
3---6.17 Å2
Refine analyzeLuzzati coordinate error free: 0.14 Å / Luzzati sigma a free: 0.43 Å
Refinement stepCycle: LAST / Resolution: 2.15→32.95 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1520 0 12 58 1590
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.006
X-RAY DIFFRACTIONc_angle_deg1.4
X-RAY DIFFRACTIONc_dihedral_angle_d26.4
X-RAY DIFFRACTIONc_improper_angle_d0.91
LS refinement shellResolution: 2.15→2.23 Å / Total num. of bins used: 10
RfactorNum. reflection% reflection
Rfree0.34 --
Rwork0.322 834 -
obs-834 76 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2WATER_REP.PARAMWATER.TOP
X-RAY DIFFRACTION3ION.PARAMION.TOP
X-RAY DIFFRACTION4ACE.PARAMACE.TOP
Refinement
*PLUS
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg26.4
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg0.91
LS refinement shell
*PLUS
Rfactor Rwork: 0.32

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