1TLF

UNPRECEDENTED QUATERNARY STRUCTURE OF E. COLI LAC REPRESSOR CORE TETRAMER: IMPLICATIONS FOR DNA LOOPING


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Observed: 0.222

Literature

Macromolecules
Sequence Display for 1TLF

Classification: TRANSCRIPTION REGULATION

Total Structure Weight: 130490.58

Macromolecule Entities
Molecule Chains Length Organism Details
LAC REPRESSOR A, B, C, D 301 Escherichia coli Gene Name(s): lacI b0345 JW0336
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG

Small Molecules
Ligands 2 Unique
ID Chains Name / Formula / InChI Key 2D Diagram 3D Interactions
IPT
Query on IPT

A, B, C, D ISOPROPYL-1-BETA-D-THIOGALACTOSIDE
1-(ISOPROPYLTHIO)-BETA-GALACTOPYRANSIDE (Synonym)
C9 H18 O5 S
BPHPUYQFMNQIOC-NXRLNHOXSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
EMC
Query on EMC

A, B, C, D ETHYL MERCURY ION
C2 H5 Hg
MJOUBOKSWBMNGQ-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Observed: 0.222
  • Space Group: P 1 21 1

Unit Cell:

Length (Å) Angle (°)
a = 90.16 α = 90.00
b = 64.73 β = 91.75
c = 117.94 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 1995-03-06
  • Released Date: 1995-07-31
  • Deposition author(s): Friedman, A.M., Fischmann, T.O., Steitz, T.A.

Revision History

  • Version 1_0: 1995-07-31

    Type: Initial release

  • Version 1_1: 2008-03-24

    Type: Version format compliance

  • Version 1_2: 2011-07-13

    Type: Version format compliance