Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - AB 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 114510.22 
• Atom Count: 7730 
• Residue Count: 984 
• Unique protein chains: 2

1EET

HIV-1 REVERSE TRANSCRIPTASE IN COMPLEX WITH THE INHIBITOR MSC204

• DOI: 10.2210/pdb1EET/pdb

• Classification: Viral protein transferase
• Organism(s): Human immunodeficiency virus type 1 group M subtype B
• Expression System: Escherichia coli
• Mutation(s): 1 


• Deposited: 2000-02-03 Released: 2001-02-07 
• Deposition Author(s): Hogberg, M., Sahlberg, C., Engelhardt, P., Noreen, R., Kangasmetsa, J., Johansson, N.G., Oberg, B., Vrang, L., Zhang, H., Sahlberg, B.L., Unge, T., Lovgren, S., Fridborg, K., Backbro, K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.73 Å
• R-Value Free: 0.271 
• R-Value Work: 0.213 

Literature

Urea-PETT compounds as a new class of HIV-1 reverse transcriptase inhibitors. 3. Synthesis and further structure-activity relationship studies of PETT analogues.

Hogberg, M., Sahlberg, C., Engelhardt, P., Noreen, R., Kangasmetsa, J., Johansson, N.G., Oberg, B., Vrang, L., Zhang, H., Sahlberg, B.L., Unge, T., Lovgren, S., Fridborg, K., Backbro, K.

(1999) J.Med.Chem. 42: 4150-4160

• PubMed: 10514285 


• PubMed Abstract: 
  

The further development of allosteric HIV-1 RT inhibitors in the urea analogue series of PETT (phenylethylthiazolylthiourea) derivatives is described here. The series includes derivatives with an ethyl linker (1-5) and racemic (6-16) and enantiomeric (17-20) cis-cyclopropane compounds. The antiviral activity was determined both at the RT level and in cell culture on both wild-type and mutant forms of HIV-1. Most compounds have anti-HIV-1 activity on the wt in the nanomolar range. Resistant HIV-1 was selected in vitro for some of the compounds, and the time for resistant HIV-1 to develop was longer for urea-PETT compounds than it was for reference compounds. Preliminary pharmacokinetics in rats showed that compound 18 is orally bioavailable and penetrates well into the brain. The three-dimensional structure of complexes between HIV-1 RT and two enantiomeric compounds (17 and 18) have been determined. The structures show similar binding in the NNI binding pocket. The propionylphenyl moieties of both inhibitors show perfect stacking to tyrosine residues 181 and 188. The cyclopropyl moiety of the (+)-enantiomer 18 exhibits optimal packing distances for the interactions with leucine residue 100 and valine residue 179.

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Organizational Affiliation: 

Medivir AB, Lunastigen 7, S-141 44 Huddinge, Sweden.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
HIV-1 REVERSE TRANSCRIPTASE	A	557	Human immunodeficiency virus type 1 group M subtype B	Mutation(s): 1  Gene Names: gag-pol
Find proteins for P03366 (Human immunodeficiency virus type 1 group M subtype B) Go to UniProtKB:  P03366

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
HIV-1 REVERSE TRANSCRIPTASE	B	427	Human immunodeficiency virus type 1 group M subtype B	Mutation(s): 0  Gene Names: gag-pol
Find proteins for P03366 (Human immunodeficiency virus type 1 group M subtype B) Go to UniProtKB:  P03366

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
BFU	A	1-(5-BROMO-PYRIDIN-2-YL)-3-[2-(6-FLUORO-2-HYDROXY-3-PROPIONYL-PHENYL)-CYCLOPROPYL]-UREA MSC204 C18 H17 Br F N3 O3 VRAJWAGCJIXJHQ-YPMHNXCESA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
BFU	IC50: 4.8 - 41 nM (98) BINDINGDB

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.73 Å
• R-Value Free: 0.271 
• R-Value Work: 0.213 
• Space Group: C 2 2 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 119.570	α = 90.00
b = 156.450	β = 90.00
c = 156.350	γ = 90.00

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing
X-PLOR	model building
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-02-03 
• Released Date: 2001-02-07 
• Deposition Author(s): Hogberg, M., Sahlberg, C., Engelhardt, P., Noreen, R., Kangasmetsa, J., Johansson, N.G., Oberg, B., Vrang, L., Zhang, H., Sahlberg, B.L., Unge, T., Lovgren, S., Fridborg, K., Backbro, K.

Revision History 

• Version 1.0: 2001-02-07
  Type: Initial release
• Version 1.1: 2008-04-27
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance