5HLF

STRUCTURE OF HIV-1 REVERSE TRANSCRIPTASE In COMPLEX WITH A 38-MER HAIRPIN TEMPLATE-PRIMER DNA APTAMER AND AN ALPHA-CARBOXYPHOSPHONATE INHIBITOR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 2.1 of the entry. See complete history


Literature

Exploring the role of the alpha-carboxyphosphonate moiety in the HIV-RT activity of alpha-carboxy nucleoside phosphonates.

Mullins, N.D.Maguire, N.M.Ford, A.Das, K.Arnold, E.Balzarini, J.Maguire, A.R.

(2016) Org Biomol Chem 14: 2454-2465

  • DOI: https://doi.org/10.1039/c5ob02507a
  • Primary Citation of Related Structures:  
    5HLF

  • PubMed Abstract: 

    As α-carboxy nucleoside phosphonates (α-CNPs) have demonstrated a novel mode of action of HIV-1 reverse transcriptase inhibition, structurally related derivatives were synthesized, namely the malonate 2, the unsaturated and saturated bisphosphonates 3 and 4, respectively and the amide 5. These compounds were evaluated for inhibition of HIV-1 reverse transcriptase in cell-free assays. The importance of the α-carboxy phosphonoacetic acid moiety for achieving reverse transcriptase inhibition, without the need for prior phosphorylation, was confirmed. The malonate derivative 2 was less active by two orders of magnitude than the original α-CNPs, while displaying the same pattern of kinetic behavior; interestingly the activity resides in the “L”-enantiomer of 2, as seen with the earlier series of α-CNPs. A crystal structure with an RT/DNA complex at 2.95 Å resolution revealed the binding of the “L”-enantiomer of 2, at the polymerase active site with a weaker metal ion chelation environment compared to 1a (T-α-CNP) which may explain the lower inhibitory activity of 2.


  • Organizational Affiliation

    Department of Chemistry, Analytical and Biological Chemistry Research Facility, Synthesis and Solid State Pharmaceutical Centre, University College, Cork, Ireland. a.maguire@ucc.ie.


Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HIV-1 REVERSE TRANSCRIPTASE P66 SUBUNIT
A, C
555Human immunodeficiency virus type 1 BH10Mutation(s): 1 
Gene Names: gag-pol
EC: 2.7.7.49
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
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
HIV-1 REVERSE TRANSCRIPTASE P51 SUBUNIT
B, D
444Human immunodeficiency virus type 1 BH10Mutation(s): 1 
Gene Names: gag-pol
EC: 2.7.7.49
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
Expand
  • Reference Sequence
Find similar nucleic acids by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains LengthOrganismImage
DNA (38-MER)
E, F
38synthetic construct
Sequence Annotations
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 4
MoleculeChains Length2D Diagram Glycosylation3D Interactions
beta-D-fructofuranose-(2-1)-alpha-D-glucopyranose
G, H
2N/A
Glycosylation Resources
GlyTouCan:  G05551OP
GlyCosmos:  G05551OP
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
64A
Query on 64A

Download Ideal Coordinates CCD File 
J [auth A]{[(1S,3R)-3-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)cyclopentyl]oxy}propanedioic acid
C13 H16 N2 O7
LBUPGXBDONMGHG-SFYZADRCSA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
L [auth A],
T [auth C]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL

Download Ideal Coordinates CCD File 
M [auth A]
N [auth B]
O [auth B]
P [auth B]
Q [auth B]
M [auth A],
N [auth B],
O [auth B],
P [auth B],
Q [auth B],
R [auth B],
U [auth C],
V [auth D],
W [auth D],
X [auth D],
Y [auth D]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
I [auth A],
K [auth A],
S [auth C]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Biologically Interesting Molecules (External Reference) 1 Unique
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.06α = 90
b = 128.56β = 101.46
c = 132.41γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Blu-Icedata collection
Aimlessdata scaling
Cootmodel building
PDB_EXTRACTdata extraction
MOSFLMdata reduction
PHENIXphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesR37 AI027690

Revision History  (Full details and data files)

  • Version 1.0: 2016-02-10
    Type: Initial release
  • Version 1.1: 2016-03-02
    Changes: Database references
  • Version 1.2: 2017-09-20
    Changes: Author supporting evidence, Derived calculations
  • Version 1.3: 2019-12-11
    Changes: Author supporting evidence
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary
  • Version 2.1: 2023-09-27
    Changes: Data collection, Database references, Refinement description, Structure summary