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- PDB-1xp7: HIV-1 subtype F genomic RNA Dimerization Initiation Site -

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Basic information

Entry
Database: PDB / ID: 1xp7
TitleHIV-1 subtype F genomic RNA Dimerization Initiation Site
Components5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*AP*GP*UP*GP*CP*AP*CP*AP*CP*AP*GP*CP*AP*AP*G)-3'
KeywordsRNA / LOOP-LOOP COMPLEX / HIV-1
Function / homologyRNA / RNA (> 10)
Function and homology information
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.5 Å
AuthorsEnnifar, E. / Dumas, P.
CitationJournal: J.Mol.Biol. / Year: 2006
Title: Polymorphism of Bulged-out Residues in HIV-1 RNA DIS Kissing Complex and Structure Comparison with Solution Studies
Authors: Ennifar, E. / Dumas, P.
History
DepositionOct 8, 2004Deposition site: RCSB / Processing site: PDBJ
Revision 1.0Oct 18, 2005Provider: repository / Type: Initial release
Revision 1.1Apr 30, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Mar 13, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_asym_id / _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_asym_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_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: 5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*AP*GP*UP*GP*CP*AP*CP*AP*CP*AP*GP*CP*AP*AP*G)-3'
B: 5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*AP*GP*UP*GP*CP*AP*CP*AP*CP*AP*GP*CP*AP*AP*G)-3'
hetero molecules


Theoretical massNumber of molelcules
Total (without water)15,0859
Polymers14,7732
Non-polymers3127
Water86548
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)27.380, 116.190, 94.500
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number20
Space group name H-MC2221
Components on special symmetry positions
IDModelComponents
11A-112-

HOH

21A-122-

HOH

31B-113-

HOH

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Components

#1: RNA chain 5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*AP*GP*UP*GP*CP*AP*CP*AP*CP*AP*GP*CP*AP*AP*G)-3' / HIV-1 genomic RNA DIS


Mass: 7386.472 Da / Num. of mol.: 2 / Source method: obtained synthetically
#2: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Mg
#3: Chemical ChemComp-SO4 / SULFATE ION / Sulfate


Mass: 96.063 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: SO4
#4: Chemical ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Na
#5: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 48 / 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: 2.54 Å3/Da / Density % sol: 51.65 %
Crystal growTemperature: 310 K / Method: vapor diffusion, hanging drop / pH: 7
Details: PEG8000, Ammonium sulfate, MgCl2, Na Cacodylate, spermine, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 310K
Components of the solutions
IDNameCrystal-IDSol-ID
1PEG800011
2Ammonium sulfate11
3MgCl211
4Na Cacodylate11
5spermine11
6PEG800012
7Ammonium sulfate12
8MgCl212
9Na Cacodylate12
10spermine12

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Data collection

DiffractionMean temperature: 90 K
Diffraction sourceSource: SYNCHROTRON / Site: ESRF / Beamline: ID14-1
DetectorType: ADSC QUANTUM 4 / Detector: CCD
RadiationMonochromator: CRYSTAL / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthRelative weight: 1
ReflectionResolution: 2.5→20 Å / Num. all: 5347 / Num. obs: 5206 / % possible obs: 99.6 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 5.6 % / Biso Wilson estimate: 48.7 Å2 / Rsym value: 0.046 / Net I/σ(I): 33

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Processing

Software
NameVersionClassification
CNS1.1refinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 2.5→8 Å / Rfactor Rfree error: 0.013 / Data cutoff high absF: 624331.34 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 2
RfactorNum. reflection% reflectionSelection details
Rfree0.23 298 6.2 %RANDOM
Rwork0.219 ---
obs0.219 4787 89.5 %-
all-5347 --
Solvent computationSolvent model: FLAT MODEL / Bsol: 33.222 Å2 / ksol: 0.35757 e/Å3
Displacement parametersBiso mean: 40.6 Å2
Baniso -1Baniso -2Baniso -3
1-0.79 Å20 Å20 Å2
2---10.45 Å20 Å2
3---9.66 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.38 Å0.35 Å
Luzzati d res low-10 Å
Luzzati sigma a0.46 Å0.35 Å
Refinement stepCycle: LAST / Resolution: 2.5→8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms0 978 15 48 1041
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.007
X-RAY DIFFRACTIONc_angle_deg0.9
X-RAY DIFFRACTIONc_dihedral_angle_d15
X-RAY DIFFRACTIONc_improper_angle_d1.32
LS refinement shellResolution: 2.5→2.65 Å / Rfactor Rfree error: 0.053 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.346 43 6.9 %
Rwork0.325 579 -
obs--72.7 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMION.TOP
X-RAY DIFFRACTION2WATER_REP.PARAMDNA-RNA.TOP
X-RAY DIFFRACTION3DNA-RNA_REP.PARAMION.TOP
X-RAY DIFFRACTION4ION.PARAMSPERMINE.TOP
X-RAY DIFFRACTION5SPERMINE.PARAM

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