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- PDB-1k1t: Combining Mutations in HIV-1 Protease to Understand Mechanisms of... -

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Basic information

Entry
Database: PDB / ID: 1k1t
TitleCombining Mutations in HIV-1 Protease to Understand Mechanisms of Resistance
ComponentsPROTEASE RETROPEPSIN
KeywordsHYDROLASE/HYDROLASE INHIBITOR / HIV-1 PROTEASE / HYDROLASE-HYDROLASE INHIBITOR COMPLEX
Function / homology
Function and homology information


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 ...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 / 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. / 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
N-[(2R)-2-({N~5~-[amino(iminio)methyl]-L-ornithyl-L-valyl}amino)-4-methylpentyl]-L-phenylalanyl-L-alpha-glutamyl- L-alanyl-L-norleucinamide / Chem-0Q4 / Gag-Pol polyprotein
Similarity search - Component
Biological speciesHuman immunodeficiency virus 1
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.2 Å
AuthorsMahalingam, B. / Boross, P. / Wang, Y.-F. / Louis, J.M. / Fischer, C. / Tozser, J. / Harrison, R.W. / Weber, I.T.
CitationJournal: Proteins / Year: 2002
Title: Combining mutations in HIV-1 protease to understand mechanisms of resistance.
Authors: Mahalingam, B. / Boross, P. / Wang, Y.F. / Louis, J.M. / Fischer, C.C. / Tozser, J. / Harrison, R.W. / Weber, I.T.
History
DepositionSep 25, 2001Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 10, 2002Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Atomic model / Database references ...Atomic model / Database references / Derived calculations / Non-polymer description / Structure summary / Version format compliance
Revision 1.3Dec 12, 2012Group: Other
Revision 1.4Oct 27, 2021Group: Database references / Derived calculations
Category: database_2 / struct_ref_seq_dif ...database_2 / struct_ref_seq_dif / struct_sheet / 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_sheet.number_strands / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.5Feb 7, 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: PROTEASE RETROPEPSIN
B: PROTEASE RETROPEPSIN
hetero molecules


Theoretical massNumber of molelcules
Total (without water)22,3544
Polymers21,4252
Non-polymers9292
Water3,117173
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area5570 Å2
ΔGint-43 kcal/mol
Surface area9380 Å2
MethodPISA
Unit cell
Length a, b, c (Å)51.256, 58.130, 61.563
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 RETROPEPSIN


Mass: 10712.601 Da / Num. of mol.: 2 / Mutation: K45I, V82S
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human immunodeficiency virus 1 / Production host: Escherichia coli (E. coli) / References: UniProt: P04587, HIV-1 retropepsin
#2: Chemical ChemComp-0Q4 / N-[(2R)-2-({N~5~-[amino(iminio)methyl]-L-ornithyl-L-valyl}amino)-4-methylpentyl]-L-phenylalanyl-L-alpha-glutamyl-L-alanyl-L-norleucinamide / Inhibitor analogues of CA-p2


Type: peptide-like, Peptide-like / Class: Inhibitor / Mass: 833.053 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C40H70N11O8
References: N-[(2R)-2-({N~5~-[amino(iminio)methyl]-L-ornithyl-L-valyl}amino)-4-methylpentyl]-L-phenylalanyl-L-alpha-glutamyl- L-alanyl-L-norleucinamide
#3: Chemical ChemComp-SO4 / SULFATE ION / Sulfate


Mass: 96.063 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: SO4
#4: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 173 / Source method: isolated from a natural source / Formula: H2O
Nonpolymer detailsPEPTIDE INHIBITOR 0Q4 HAS A REDUCED PEPTIDE (-CH2-NH) INSTEAD OF THE NORMAL PEPTIDE LINK (-CO-NH).
Sequence detailsMUTATIONS Q7K, L33I, L63I, C67A, C95A, HAVE BEEN MADE TO STABILIZE THE PROTEASE FROM ...MUTATIONS Q7K, L33I, L63I, C67A, C95A, HAVE BEEN MADE TO STABILIZE THE PROTEASE FROM AUTOPROTEOLYSIS, WHILE RETAINING ACTIVITY SIMILAR TO WILD-TYPE HIV-1 PROTEASE

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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: 1.71 Å3/Da / Density % sol: 40.26 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop
Details: 20-50% Saturated Ammonium Sulphate, 10% DMSO, 0.25M citrate/0.5M phosphate buffer, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal grow
*PLUS
PH range low: 6.5 / PH range high: 5
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetails
10.25 Mcitrate1reservoir
20.5 Mphosphate1reservoirpH5-6.5
310 %DMSO1reservoir
410 mMdithiothreitol1reservoir
520-50 %satammonium sulfate1reservoir
62-10 mg/mlprotein1drop

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Data collection

DiffractionMean temperature: 95 K
Diffraction sourceSource: SYNCHROTRON / Site: NSLS / Beamline: X12B / Wavelength: 1 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Oct 20, 2000
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 1.2→30 Å / Num. all: 50107 / Num. obs: 50107 / % possible obs: 86.2 %
Reflection shellResolution: 1.2→1.23 Å / Rmerge(I) obs: 0.155 / % possible all: 50.3
Reflection
*PLUS
Lowest resolution: 10 Å / Rmerge(I) obs: 0.046
Reflection shell
*PLUS
Rmerge(I) obs: 0.155

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Processing

Software
NameClassification
AMoREphasing
SHELXL-97refinement
ADSCdata collection
SCALEPACKdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 1.2→10 Å / Num. parameters: 7578 / Num. restraintsaints: 7285 / Cross valid method: FREE R / σ(F): 0 / Stereochemistry target values: ENGH AND HUBER
RfactorNum. reflection% reflectionSelection details
Rfree0.227 2503 5 %RANDOM
Rwork0.1957 ---
all0.196 50027 --
obs0.1957 -86.2 %-
Refine analyzeNum. disordered residues: 34 / Occupancy sum hydrogen: 0 / Occupancy sum non hydrogen: 1744
Refinement stepCycle: LAST / Resolution: 1.2→10 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1508 0 64 173 1745
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONs_bond_d0.011
X-RAY DIFFRACTIONs_angle_d0.028
X-RAY DIFFRACTIONs_similar_dist0
X-RAY DIFFRACTIONs_from_restr_planes0.0315
X-RAY DIFFRACTIONs_zero_chiral_vol0.077
X-RAY DIFFRACTIONs_non_zero_chiral_vol0.065
X-RAY DIFFRACTIONs_anti_bump_dis_restr0.027
X-RAY DIFFRACTIONs_rigid_bond_adp_cmpnt0
X-RAY DIFFRACTIONs_similar_adp_cmpnt0.043
X-RAY DIFFRACTIONs_approx_iso_adps0
Software
*PLUS
Name: SHELXL / Version: 97 / Classification: refinement
Refinement
*PLUS
Highest resolution: 1.2 Å / Lowest resolution: 10 Å / Rfactor all: 0.196 / Rfactor Rfree: 0.227 / Rfactor Rwork: 0.196
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONs_plane_restr0.032
X-RAY DIFFRACTIONs_chiral_restr0.077

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