Biological Assembly 1  

 3D View: Structure | Electron Density

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - AB Pseudo Symmetry: Cyclic - C2  (3D View)
Pseudo Stoichiometry: Homo 2-mer -A2 

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

Macromolecule Content

• Total Structure Weight: 22108.63 
• Atom Count: 1337 
• Residue Count: 190 
• Unique protein chains: 2

1N1J

Crystal structure of the NF-YB/NF-YC histone pair

• DOI: 10.2210/pdb1N1J/pdb

• Classification: DNA BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2002-10-18 Released: 2003-02-18 
• Deposition Author(s): Romier, C., Cocchiarella, F., Mantovani, R., Moras, D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.67 Å
• R-Value Free: 0.206 
• R-Value Work: 0.181 

Literature

The NF-YB/NF-YC structure gives insight into DNA binding and transcription regulation by CCAAT factor NF-Y

Romier, C., Cocchiarella, F., Mantovani, R., Moras, D.

(2003) J.Biol.Chem. 278: 1336-1345

• PubMed: 12401788 
• DOI: 10.1074/jbc.M209635200


• PubMed Abstract: 
  

The heterotrimeric transcription factor NF-Y recognizes with high specificity and affinity the CCAAT regulatory element that is widely represented in promoters and enhancer regions. The CCAAT box acts in concert with neighboring elements, and its bending by NF-Y is thought to be a major mechanism required for transcription activation. We have solved the structure of the NF-YC/NF-YB subcomplex of NF-Y, which shows that the core domains of both proteins interact through histone fold motifs. This histone-like pair is closely related to the H2A/H2B and NC2alpha/NC2beta families, with features that are both common to this class of proteins and unique to NF-Y. The structure together with the modeling of the nonspecific interaction of NF-YC/NF-YB with DNA and the full NF-Y/CCAAT box complex highlight important structural features that account for different and possibly similar biological functions of the transcriptional regulators NF-Y and NC2. In particular, it emphasizes the role of the newly described alphaC helix of NF-YC, which is both important for NF-Y trimerization and a target for regulatory proteins, such as MYC and p53.

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Organizational Affiliation: 

Département de Biologie et Génomique Structurales, Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS/INSERM/Université Louis Pasteur, 1 Rue Laurent Fries, B.P. 10142, 67404 Illkirch Cedex, France.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
NF-YB	A	93	Homo sapiens	Mutation(s): 0  Gene Names: NFYB (HAP3)
Find proteins for P25208 (Homo sapiens) Go to Gene View: NFYB Go to UniProtKB:  P25208

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
NF-YC	B	97	Homo sapiens	Mutation(s): 0  Gene Names: NFYC
Find proteins for Q13952 (Homo sapiens) Go to Gene View: NFYC Go to UniProtKB:  Q13952

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.67 Å
• R-Value Free: 0.206 
• R-Value Work: 0.181 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 51.624	α = 90.00
b = 60.345	β = 90.00
c = 61.645	γ = 90.00

Software Package:

Software Name	Purpose
ProDC	data collection
SHARP	phasing
SCALEPACK	data scaling
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-10-18 
• Released Date: 2003-02-18 
• Deposition Author(s): Romier, C., Cocchiarella, F., Mantovani, R., Moras, D.

Revision History 

• Version 1.0: 2003-02-18
  Type: Initial release
• Version 1.1: 2008-04-28
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance
• Version 1.3: 2014-04-16
  Type: Other
• Version 1.4: 2017-10-11
  Type: Advisory, Refinement description