1GTW

crystal structure of C/EBPbeta bZip homodimer bound to a DNA fragment from the tom-1A promoter

• PDB DOI: https://doi.org/10.2210/pdb1GTW/pdb
• NAKB: 1GTW

• Classification: TRANSCRIPTION/DNA
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2002-01-22 Released: 2004-02-06 
• Deposition Author(s): Tahirov, T.H., Ogata, K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.271 
• R-Value Work: 0.231 
• R-Value Observed: 0.231 

Starting Model: experimental

Literature

Structural Basis for Flexible Base Recognition by C/Ebpbeta

Tahirov, T.H., Inoue-Bungo, T., Sato, K., Sasaki, M., Ogata, K.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 28.56 kDa 
• Atom Count: 2,095 
• Modelled Residue Count: 166 
• Deposited Residue Count: 188 
• Unique protein chains: 1
• Unique nucleic acid chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CAAT/ENHANCER BINDING PROTEIN BETA	A, B	78	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P17676 (Homo sapiens) Explore P17676  Go to UniProtKB:  P17676
PHAROS:  P17676 GTEx:  ENSG00000172216

Entity ID: 2
Molecule	Chains	Length	Organism	Image
5'-D(*AP*AP*TP*GP*TP*GP*GP*CP*GP*CP* AP*AP*TP*CP*CP*T)-3'	C	16	N/A

Entity ID: 3
Molecule	Chains	Length	Organism	Image
5'-D(*TP*AP*GP*GP*AP*TP*TP*GP*CP*GP* CP*CP*AP*CP*AP*T)-3'	D	16	N/A

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.271 
• R-Value Work: 0.231 
• R-Value Observed: 0.231 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 100.938	α = 90
b = 112.533	β = 90
c = 74.349	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-02-06 
Deposition Author(s): Tahirov, T.H., Ogata, K.

Revision History  

• Version 1.0: 2004-02-06
  Type: Initial release
  
• Version 1.1: 2014-01-22
  Changes: Database references, Derived calculations, Non-polymer description, Other, Refinement description, Structure summary, Version format compliance
• Version 1.2: 2023-12-13
  Changes: Data collection, Database references, Other, Refinement description