2HND

Crystal Structure of K101E Mutant HIV-1 Reverse Transcriptase in Complex with Nevirapine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.197 

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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Structural insights into mechanisms of non-nucleoside drug resistance for HIV-1 reverse transcriptases mutated at codons 101 or 138.

Ren, J.Nichols, C.E.Stamp, A.Chamberlain, P.P.Ferris, R.Weaver, K.L.Short, S.A.Stammers, D.K.

(2006) FEBS J 273: 3850-3860

  • DOI: 10.1111/j.1742-4658.2006.05392.x
  • Primary Citation of Related Structures:  
    2HND, 2HNY, 2HNZ

  • PubMed Abstract: 
  • Lys101Glu is a drug resistance mutation in reverse transcriptase clinically observed in HIV-1 from infected patients treated with the non-nucleoside inhibitor (NNRTI) drugs nevirapine and efavirenz. In contrast to many NNRTI resistance mutations, Lys101(p66 subunit) is positioned at the surface of the NNRTI pocket where it interacts across the reverse transcriptase (RT) subunit interface with Glu138(p51 subunit) ...

    Lys101Glu is a drug resistance mutation in reverse transcriptase clinically observed in HIV-1 from infected patients treated with the non-nucleoside inhibitor (NNRTI) drugs nevirapine and efavirenz. In contrast to many NNRTI resistance mutations, Lys101(p66 subunit) is positioned at the surface of the NNRTI pocket where it interacts across the reverse transcriptase (RT) subunit interface with Glu138(p51 subunit). However, nevirapine contacts Lys101 and Glu138 only indirectly, via water molecules, thus the structural basis of drug resistance induced by Lys101Glu is unclear. We have determined crystal structures of RT(Glu138Lys) and RT(Lys101Glu) in complexes with nevirapine to 2.5 A, allowing the determination of water structure within the NNRTI-binding pocket, essential for an understanding of nevirapine binding. Both RT(Glu138Lys) and RT(Lys101Glu) have remarkably similar protein conformations to wild-type RT, except for significant movement of the mutated side-chains away from the NNRTI pocket induced by charge inversion. There are also small shifts in the position of nevirapine for both mutant structures which may influence ring stacking interactions with Tyr181. However, the reduction in hydrogen bonds in the drug-water-side-chain network resulting from the mutated side-chain movement appears to be the most significant contribution to nevirapine resistance for RT(Lys101Glu). The movement of Glu101 away from the NNRTI pocket can also explain the resistance of RT(Lys101Glu) to efavirenz but in this case is due to a loss of side-chain contacts with the drug. RT(Lys101Glu) is thus a distinctive NNRTI resistance mutant in that it can give rise to both direct and indirect mechanisms of drug resistance, which are inhibitor-dependent.


    Organizational Affiliation

    Division of Structural Biology, The Wellcome Trust Centre for Human Genetics, Henry Wellcome Building for Genomic Medicine, University of Oxford, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Reverse transcriptase/ribonuclease HA534Human immunodeficiency virus 1Mutation(s): 2 
Gene Names: POL
EC: 2.7.7.49 (PDB Primary Data), 3.4.23.16 (UniProt), 2.7.7.7 (UniProt), 3.1.26.13 (UniProt), 3.1.13.2 (UniProt), 2.7.7 (UniProt), 3.1 (UniProt)
UniProt
Find proteins for P04585 (Human immunodeficiency virus type 1 group M subtype B (isolate HXB2))
Explore P04585 
Go to UniProtKB:  P04585
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP04585
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Reverse transcriptase/ribonuclease HB422Human immunodeficiency virus 1Mutation(s): 1 
Gene Names: POL
EC: 2.7.7.49 (PDB Primary Data), 3.4.23.16 (UniProt), 2.7.7.7 (UniProt), 3.1.26.13 (UniProt), 3.1.13.2 (UniProt), 2.7.7 (UniProt), 3.1 (UniProt)
UniProt
Find proteins for P03367 (Human immunodeficiency virus type 1 group M subtype B (isolate BRU/LAI))
Explore P03367 
Go to UniProtKB:  P03367
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03367
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NVP
Query on NVP

Download Ideal Coordinates CCD File 
G [auth A]11-CYCLOPROPYL-5,11-DIHYDRO-4-METHYL-6H-DIPYRIDO[3,2-B:2',3'-E][1,4]DIAZEPIN-6-ONE
C15 H14 N4 O
NQDJXKOVJZTUJA-UHFFFAOYSA-N
 Ligand Interaction
PO4
Query on PO4

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
E [auth A]
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
MG
Query on MG

Download Ideal Coordinates CCD File 
F [auth A]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CSD
Query on CSD
A L-PEPTIDE LINKINGC3 H7 N O4 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.197 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 138.9α = 90
b = 114.9β = 90
c = 65.6γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing

Structure Validation

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Ligand Structure Quality Assessment 



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-09-05
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-10-20
    Changes: Database references, Derived calculations