1LEI

The kB DNA sequence from the HLV-LTR functions as an allosteric regulator of HIV transcription


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.250 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The kB DNA sequence from the HIV Long Terminal Repeat functions as an allosteric regulator of HIV transcription

Chen-Park, F.E.Huang, D.B.Noro, B.Thanos, D.Ghosh, G.

(2002) J Biol Chem 277: 24701-24708

  • DOI: 10.1074/jbc.M200007200
  • Primary Citation of Related Structures:  
    1LEI

  • PubMed Abstract: 
  • NF-kappaB is an inducible transcription factor involved in the immune response, inflammation, and viral transcription. To address how the two NF-kappaB and three Sp1 binding sites of the human immunodeficiency virus (HIV) long terminal repeat (LTR) control multiple activator assembly and transcription, we first observed and compared unique conformations between the crystallographic structure of the NF-kappaB p50 ...

    NF-kappaB is an inducible transcription factor involved in the immune response, inflammation, and viral transcription. To address how the two NF-kappaB and three Sp1 binding sites of the human immunodeficiency virus (HIV) long terminal repeat (LTR) control multiple activator assembly and transcription, we first observed and compared unique conformations between the crystallographic structure of the NF-kappaB p50.p65 heterodimer bound to the uPA-kappaB target site to that of the p50.p65.HIV-kappaB complex. Next, cooperativity between two NF-kappaB molecules bound to tandem HIV-kappaB sequences was measured as well as that of NF-kappaB and transcription factor Sp1 when bound to adjacent sites. The cooperativity of hybrid HIV-LTR enhancers was measured with the 3' kappaB site converted to uPA-kappaB or to interferon beta gene enhancer kappaB. The hybrids were defective in transcriptional activator assembly and less active transcriptionally. These functional differences correlate with observed conformational differences and demonstrate that distinct kappaB DNA sequences function as allosteric regulators in a gene-specific manner.


    Organizational Affiliation

    Department of Biology, University of California, San Diego, La Jolla, California 92093-0359, USA.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
NUCLEAR FACTOR NF-KAPPA-B P65 SUBUNITC [auth A]274Mus musculusMutation(s): 0 
Gene Names: RelaNfkb3
UniProt
Find proteins for Q04207 (Mus musculus)
Explore Q04207 
Go to UniProtKB:  Q04207
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ04207
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
NUCLEAR FACTOR NF-KAPPA-B P50 SUBUNITD [auth B]313Mus musculusMutation(s): 0 
Gene Names: Nfkb1
UniProt & NIH Common Fund Data Resources
Find proteins for P25799 (Mus musculus)
Explore P25799 
Go to UniProtKB:  P25799
IMPC:  MGI:97312
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP25799
Protein Feature View
Expand
  • Reference Sequence

Find similar nucleic acids by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChainsLengthOrganismImage
5'-D(*CP*TP*CP*AP*GP*GP*GP*AP*AP*AP*GP*TP*AP*CP*AP*GP*A)-3'A [auth C]17N/A
Protein Feature View
Expand
  • Reference Sequence

Find similar nucleic acids by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChainsLengthOrganismImage
5'-D(*TP*CP*TP*GP*5ITP*AP*CP*5ITP*5ITP*5ITP*CP*CP*CP*TP*GP*AP*G)-3'B [auth D]17N/A
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
DNA PDBBind:  1LEI Kd: 0.8 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.250 
  • Space Group: C 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 137.131α = 90
b = 179.697β = 90
c = 97.068γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-04-15
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance