Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A2B 

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

Macromolecule Content

• Total Structure Weight: 20845.18 
• Atom Count: 1231 
• Residue Count: 183 
• Unique protein chains: 2

2WX1

TAB2 NZF DOMAIN IN COMPLEX WITH Lys63-linked tri-ubiquitin, P212121

• DOI: 10.2210/pdb2WX1/pdb

• Classification: PROTEIN BINDING
• Organism(s): Bos taurus, Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2009-10-30 Released: 2009-11-24 
• Deposition Author(s): Kulathu, Y., Akutsu, M., Bremm, A., Hofmann, K., Komander, D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3 Å
• R-Value Free: 0.269 
• R-Value Work: 0.222 

Literature

Two-Sided Ubiquitin Binding Explains Specificity of the Tab2 Nzf Domain

Kulathu, Y., Akutsu, M., Bremm, A., Hofmann, K., Komander, D.

(2009) Nat.Struct.Mol.Biol. 16: 1328

• PubMed: 19935683 
• DOI: 10.1038/nsmb.1731
• Primary Citation of Related Structures:  
  2WX0, 2WWZ


• PubMed Abstract: 
  

The protein kinase TAK1 is activated by binding to Lys63 (K63)-linked ubiquitin chains through its subunit TAB2. Here we analyze crystal structures of the TAB2 NZF domain bound to Lys63-linked di- and triubiquitin, revealing that TAB2 binds adjacent ubiquitin moieties via two distinct binding sites. The conformational constraints imposed by TAB2 on a Lys63 dimer cannot be adopted by linear chains, explaining why TAK1 cannot be activated by linear ubiquitination events.

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Organizational Affiliation: 

Medical Research Council Laboratory of Molecular Biology, Cambridge, UK.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
UBIQUITIN	A, B	76	Bos taurus	Mutation(s): 0  Gene Names: UBC
Find proteins for P0CH28 (Bos taurus) Go to Gene View: UBC Go to UniProtKB:  P0CH28

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
MITOGEN-ACTIVATED PROTEIN KINASE KINASE KINASE 7-INTERACTING PROTEIN 2	C	31	Homo sapiens	Mutation(s): 0  Gene Names: TAB2 (KIAA0733, MAP3K7IP2)
Find proteins for Q9NYJ8 (Homo sapiens) Go to Gene View: TAB2 Go to UniProtKB:  Q9NYJ8

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
ZN	C	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3 Å
• R-Value Free: 0.269 
• R-Value Work: 0.222 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 30.490	α = 90.00
b = 70.920	β = 90.00
c = 72.820	γ = 90.00

Software Package:

Software Name	Purpose
PHENIX	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2009-10-30 
• Released Date: 2009-11-24 
• Deposition Author(s): Kulathu, Y., Akutsu, M., Bremm, A., Hofmann, K., Komander, D.

Revision History 

• Version 1.0: 2009-11-24
  Type: Initial release
• Version 1.1: 2011-05-08
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance