7AHX

HIV-1 REVERSE TRANSCRIPTASE COMPLEX WITH DNA AND D-ASPARTATE TENOFOVIR WITH BOUND MANGANESE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.73 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.215 

wwPDB Validation   3D Report Full Report



Literature

Tenofovir-Amino Acid Conjugates Act as Polymerase Substrates-Implications for Avoiding Cellular Phosphorylation in the Discovery of Nucleotide Analogues.

Gu, W.Martinez, S.Nguyen, H.Xu, H.Herdewijn, P.De Jonghe, S.Das, K.

(2020) J Med Chem 

  • DOI: 10.1021/acs.jmedchem.0c01747
  • Primary Citation of Related Structures:  
    7AHX, 7AIG, 7AIJ, 7AII, 7AID, 7AIF

  • PubMed Abstract: 
  • Nucleotide analogues are used for treating viral infections such as HIV, hepatitis B, hepatitis C, influenza, and SARS-CoV-2. To become polymerase substrates, a nucleotide analogue must be phosphorylated by cellular kinases which is rate-limiting. Th ...

    Nucleotide analogues are used for treating viral infections such as HIV, hepatitis B, hepatitis C, influenza, and SARS-CoV-2. To become polymerase substrates, a nucleotide analogue must be phosphorylated by cellular kinases which is rate-limiting. The goal of this study is to develop dNTP/NTP analogues directly from nucleotides. Tenofovir (TFV) analogues were synthesized by conjugating with amino acids. We demonstrate that some conjugates act as dNTP analogues and HIV-1 reverse transcriptase (RT) catalytically incorporates the TFV part as the chain terminator. X-ray structures in complex with HIV-1 RT/dsDNA showed binding of the conjugates at the polymerase active site, however, in different modes in the presence of Mg 2+ versus Mn 2+ ions. The adaptability of the compounds is seemingly essential for catalytic incorporation of TFV by RT. 4d with a carboxyl sidechain demonstrated the highest incorporation. 4e showed weak incorporation and rather behaved as a dNTP-competitive inhibitor. This result advocates the feasibility of designing NTP/dNTP analogues by chemical substitutions to nucleotide analogues.


    Organizational Affiliation

    KU Leuven, Department of Microbiology, Immunology and Transplantation, Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, Herestraat 49, 3000 Leuven, Belgium.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Gag-Pol polyproteinAC556Human immunodeficiency virus type 1 BH10Mutation(s): 3 
Gene Names: gag-pol
EC: 3.4.23.16 (PDB Primary Data), 2.7.7.49 (PDB Primary Data), 2.7.7.7 (PDB Primary Data), 3.1.26.13 (PDB Primary Data), 3.1.13.2 (PDB Primary Data), 2.7.7 (PDB Primary Data), 3.1 (PDB Primary Data)
Find proteins for P03366 (Human immunodeficiency virus type 1 group M subtype B (isolate BH10))
Explore P03366 
Go to UniProtKB:  P03366
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Gag-Pol polyproteinBD428Human immunodeficiency virus type 1 BH10Mutation(s): 1 
Gene Names: gag-pol
EC: 3.4.23.16 (PDB Primary Data), 2.7.7.49 (PDB Primary Data), 2.7.7.7 (PDB Primary Data), 3.1.26.13 (PDB Primary Data), 3.1.13.2 (PDB Primary Data), 2.7.7 (PDB Primary Data), 3.1 (PDB Primary Data)
Find proteins for P03366 (Human immunodeficiency virus type 1 group M subtype B (isolate BH10))
Explore P03366 
Go to UniProtKB:  P03366
Protein Feature View
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  • Reference Sequence
Find similar nucleic acids by: 
(by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsLengthOrganismImage
DNA (5'-D(*TP*GP*GP*TP*CP*GP*GP*CP*GP*CP*CP*CP*GP*AP*AP*CP*AP*GP*GP*GP*AP*CP*TP*G)-3')E, T27Human immunodeficiency virus type 1 BH10
Find similar nucleic acids by: 
(by identity cutoff)  |  Structure
Entity ID: 4
MoleculeChainsLengthOrganismImage
DNA (5'-D(*CP*AP*GP*TP*CP*CP*CP*TP*GP*TP*TP*CP*GP*GP*(MRG)*CP*GP*CP*CP*(DDG))-3')F, P21Homo sapiens
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.73 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.215 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.416α = 90
b = 132.371β = 98.48
c = 138.744γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
MxCuBEdata collection
MOSFLMdata reduction
Aimlessdata scaling
PHENIXphasing
Cootmodel building

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2021-01-13
    Type: Initial release