4PQU

Crystal structure of HIV-1 Reverse Transcriptase in complex with RNA/DNA and dATP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.508 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.202 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structures of HIV-1 RT-RNA/DNA ternary complexes with dATP and nevirapine reveal conformational flexibility of RNA/DNA: insights into requirements for RNase H cleavage.

Das, K.Martinez, S.E.Bandwar, R.P.Arnold, E.

(2014) Nucleic Acids Res. 42: 8125-8137

  • DOI: 10.1093/nar/gku487
  • Primary Citation of Related Structures:  4PUO, 4PWD, 4Q0B
  • Also Cited By: 4R5P

  • PubMed Abstract: 
  • In synthesizing a double-stranded DNA from viral RNA, HIV-1 reverse transcriptase (RT) generates an RNA/DNA intermediate. RT also degrades the RNA strand and synthesizes the second DNA strand. The RNase H active site of RT functions as a nuclease to ...

    In synthesizing a double-stranded DNA from viral RNA, HIV-1 reverse transcriptase (RT) generates an RNA/DNA intermediate. RT also degrades the RNA strand and synthesizes the second DNA strand. The RNase H active site of RT functions as a nuclease to cleave the RNA strand; however, the structural basis for endonucleolytic cleavage of the RNA strand remains elusive. Here we report crystal structures of RT-RNA/DNA-dATP and RT-RNA/DNA-nevirapine (NVP) ternary complexes at 2.5 and 2.9 Å resolution, respectively. The polymerase region of RT-RNA/DNA-dATP complex resembles DNA/DNA ternary complexes apart from additional interactions of 2'-OH groups of the RNA strand. The conformation and binding of RNA/DNA deviates significantly after the seventh nucleotide versus a DNA/DNA substrate. Binding of NVP slides the RNA/DNA non-uniformly over RT, and the RNA strand moves closer to the RNase H active site. Two additional structures, one containing a gapped RNA and another a bulged RNA, reveal that conformational changes of an RNA/DNA and increased interactions with the RNase H domain, including the interaction of a 2'-OH with N474, help to position the RNA nearer to the active site. The structures and existing biochemical data suggest a nucleic acid conformation-induced mechanism for guiding cleavage of the RNA strand.


    Related Citations: 
    • HIV-1 reverse transcriptase complex with DNA and nevirapine reveals non-nucleoside inhibition mechanism.
      Das, K.,Martinez, S.E.,Bauman, J.D.,Arnold, E.
      (2012) Nat.Struct.Mol.Biol. 19: 253
    • High-resolution structures of HIV-1 reverse transcriptase/TMC278 complexes: strategic flexibility explains potency against resistance mutations.
      Das, K.,Bauman, J.D.,Clark, A.D.,Frenkel, Y.V.,Lewi, P.J.,Shatkin, A.J.,Hughes, S.H.,Arnold, E.
      (2008) Proc.Natl.Acad.Sci.USA 105: 1466
    • Crystal structure of HIV-1 reverse transcriptase in complex with a polypurine tract RNA:DNA.
      Sarafianos, S.G.,Das, K.,Tantillo, C.,Clark, A.D.,Ding, J.,Whitcomb, J.M.,Boyer, P.L.,Hughes, S.H.,Arnold, E.
      (2001) Embo J. 20: 1449
    • Structural basis for the role of the K65R mutation in HIV-1 reverse transcriptase polymerization, excision antagonism, and tenofovir resistance.
      Das, K.,Bandwar, R.P.,White, K.L.,Feng, J.Y.,Sarafianos, S.G.,Tuske, S.,Tu, X.,Clark, A.D.,Boyer, P.L.,Hou, X.,Gaffney, B.L.,Jones, R.A.,Miller, M.D.,Hughes, S.H.,Arnold, E.
      (2009) J.Biol.Chem. 284: 35092
    • Structural basis of HIV-1 resistance to AZT by excision.
      Tu, X.,Das, K.,Han, Q.,Bauman, J.D.,Clark, A.D.,Hou, X.,Frenkel, Y.V.,Gaffney, B.L.,Jones, R.A.,Boyer, P.L.,Hughes, S.H.,Sarafianos, S.G.,Arnold, E.
      (2010) Nat.Struct.Mol.Biol. 17: 1202


    Organizational Affiliation

    Center for Advanced Biotechnology and Medicine, Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HIV-1 Reverse Transcriptase, p66 subunit
A, C
556Human immunodeficiency virus type 1 group M subtype BGene Names: gag-pol
EC: 3.4.23.16, 3.1.-.-, 2.7.7.49, 2.7.7.7, 3.1.26.13, 2.7.7.-, 3.1.13.2
Find proteins for P03366 (Human immunodeficiency virus type 1 group M subtype B)
Go to UniProtKB:  P03366
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
HIV-1 Reverse Transcriptase, p51 subunit
B, D
428Human immunodeficiency virus type 1 group M subtype BGene Names: gag-pol
EC: 3.4.23.16, 3.1.-.-, 2.7.7.49, 2.7.7.7, 3.1.26.13, 2.7.7.-, 3.1.13.2
Find proteins for P03366 (Human immunodeficiency virus type 1 group M subtype B)
Go to UniProtKB:  P03366
Entity ID: 3
MoleculeChainsLengthOrganism
5'-R(*AP*UP*GP*GP*UP*CP*GP*GP*CP*GP*CP*CP*CP*GP*AP*AP*CP*AP*GP*GP*GP*AP*CP*UP*GP*UP*G)-3'T,E27N/A
Entity ID: 4
MoleculeChainsLengthOrganism
5'-D(*AP*CP*AP*GP*TP*CP*CP*CP*TP*GP*TP*TP*CP*GP*GP*GP*CP*GP*CP*CP*G)-3'P,F21N/A
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DTP
Query on DTP

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Download CCD File 
A, C
2'-DEOXYADENOSINE 5'-TRIPHOSPHATE
C10 H16 N5 O12 P3
SUYVUBYJARFZHO-RRKCRQDMSA-N
 Ligand Interaction
SO4
Query on SO4

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Download CCD File 
A, B, C, D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
EDO
Query on EDO

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Download CCD File 
A
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

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Download CCD File 
A, C
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.508 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.202 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 89.444α = 90.00
b = 128.288β = 101.76
c = 130.680γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
HKL-2000data collection
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-06-18
    Type: Initial release
  • Version 1.1: 2014-07-16
    Type: Database references