Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

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

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

Macromolecule Content

• Total Structure Weight: 44224.06 
• Atom Count: 3100 
• Residue Count: 372 
• Unique protein chains: 1

4Q9V

Crystal structure of TIPE3

• DOI: 10.2210/pdb4Q9V/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2014-05-02 Released: 2014-10-22 
• Deposition Author(s): Wu, J., Zhang, X., Chen, Y.H., Shi, Y.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.3 Å
• R-Value Free: 0.262 
• R-Value Work: 0.240 

Literature

TIPE3 Is the Transfer Protein of Lipid Second Messengers that Promote Cancer.

Fayngerts, S.A., Wu, J., Oxley, C.L., Liu, X., Vourekas, A., Cathopoulis, T., Wang, Z., Cui, J., Liu, S., Sun, H., Lemmon, M.A., Zhang, L., Shi, Y., Chen, Y.H.

(2014) Cancer Cell 26: 465-478

• PubMed: 25242044 
• DOI: 10.1016/j.ccr.2014.07.025


• PubMed Abstract: 
  

More than half of human cancers have aberrantly upregulated phosphoinositide signals; yet how phospholipid signals are controlled during tumorigenesis is not fully understood. We report here that TIPE3 (TNFAIP8L3) is the transfer protein of phosphoinositide second messengers that promote cancer. High-resolution crystal structure of TIPE3 shows a large hydrophobic cavity that is occupied by a phospholipid-like molecule. TIPE3 preferentially captures and shuttles two lipid second messengers, i.e., phosphatidylinositol 4,5-bisphosphate and phosphatidylinositol 3,4,5-trisphosphate, and increases their levels in the plasma membrane. Notably, human cancers have markedly upregulated TIPE3 expression. Knocking out TIPE3 diminishes tumorigenesis, whereas enforced TIPE3 expression enhances it in vivo. Thus, the function and metabolism of phosphoinositide second messengers are controlled by a specific transfer protein during tumorigenesis.

---

Organizational Affiliation: 

Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Tumor necrosis factor alpha-induced protein 8-like protein 3	A, B	186	Homo sapiens	Mutation(s): 0  Gene Names: TNFAIP8L3 (TIPE3)
Find proteins for Q5GJ75 (Homo sapiens) Go to Gene View: TNFAIP8L3 Go to UniProtKB:  Q5GJ75

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
SO4	A, B	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
CL	A, B	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.3 Å
• R-Value Free: 0.262 
• R-Value Work: 0.240 
• Space Group: I 2 2 2

Unit Cell:

Length (Å)	Angle (°)
a = 61.729	α = 90.00
b = 87.296	β = 90.00
c = 242.309	γ = 90.00

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data scaling
PHASER	phasing
HKL-2000	data collection
HKL-2000	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2014-05-02 
• Released Date: 2014-10-22 
• Deposition Author(s): Wu, J., Zhang, X., Chen, Y.H., Shi, Y.

Revision History 

• Version 1.0: 2014-10-22
  Type: Initial release