4Q0B

Crystal structure of HIV-1 reverse transcriptase in complex with gap-RNA/DNA and Nevirapine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.235 
  • R-Value Observed: 0.237 

Starting Model: experimental
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This is version 1.2 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: https://doi.org/10.1093/nar/gku487
  • Primary Citation of Related Structures:  
    4PQU, 4PUO, 4PWD, 4Q0B

  • 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 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.


  • Organizational Affiliation

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


Macromolecules

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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HIV-1 reverse transcriptase, p66 subunit
A, C
556Human immunodeficiency virus type 1 BH10Mutation(s): 3 
Gene Names: gag-pol
EC: 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)
UniProt
Find proteins for P03366 (Human immunodeficiency virus type 1 group M subtype B (isolate BH10))
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Go to UniProtKB:  P03366
Entity Groups  
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UniProt GroupP03366
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
HIV-1 reverse transcriptase, p51 subunit
B, D
428Human immunodeficiency virus type 1 BH10Mutation(s): 1 
Gene Names: gag-pol
EC: 2.7.7.49 (PDB Primary Data), 2.7.7.7 (PDB Primary Data)
UniProt
Find proteins for P03366 (Human immunodeficiency virus type 1 group M subtype B (isolate BH10))
Explore P03366 
Go to UniProtKB:  P03366
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03366
Sequence Annotations
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  • Reference Sequence

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Entity ID: 3
MoleculeChains LengthOrganismImage
5'-R(*AP*UP*GP*GP*UP*CP*GP*GP*CP*GP*CP*CP*CP*G)-3'E [auth T],
H [auth E]
14N/A
Sequence Annotations
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Entity ID: 4
MoleculeChains LengthOrganismImage
5'-R(P*AP*CP*AP*GP*GP*GP*AP*CP*UP*GP*UP*G)-3'F [auth t],
J [auth e]
12N/A
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Entity ID: 5
MoleculeChains LengthOrganismImage
5'-D(*A*CP*AP*GP*TP*CP*CP*CP*TP*GP*TP*TP*CP*GP*GP*GP*CP*GP*CP*CP*G)-3'G [auth P],
I [auth F]
21N/A
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.235 
  • R-Value Observed: 0.237 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.716α = 90
b = 131.051β = 100.69
c = 141.631γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
MOLREPphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-06-18
    Type: Initial release
  • Version 1.1: 2014-07-16
    Changes: Database references
  • Version 1.2: 2023-09-20
    Changes: Data collection, Database references, Derived calculations, Refinement description