Biological Assembly 1  

 3D View: Structure | Ligand Interaction

Pseudo Symmetry: Cyclic - C2  (3D View)
Pseudo Stoichiometry: Homo 2-mer - A2 Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 36.16 kDa 
• Atom Count: 2486 
• Residue Count: 304 
• Unique protein chains: 2

2C0J

Crystal structure of the bet3-trs33 heterodimer

• DOI: 10.2210/pdb2C0J/pdb

• Classification: TRANSPORT
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2005-09-03 Released: 2006-02-07 
• Deposition Author(s): Kim, M.-S., Yi, M.-J., Lee, K.-H., Wagner, J., Munger, C., Kim, Y.-G., Whiteway, M., Cygler, M., Oh, B.-H., Sacher, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.237 
• R-Value Work: 0.219 
• R-Value Observed: 0.219 

Literature

Biochemical and Crystallographic Studies Reveal a Specific Interaction between Trapp Subunits Trs33P and Bet3P

Kim, M.-S., Yi, M.-J., Lee, K.-H., Wagner, J., Munger, C., Kim, Y.-G., Whiteway, M., Cygler, M., Oh, B.-H., Sacher, M.

(2005) Traffic 6: 1183

• PubMed: 16262728 
• DOI: 10.1111/j.1600-0854.2005.00352.x
• Primary Citation of Related Structures:  
  2C0J


• PubMed Abstract: 
  

Transport protein particle (TRAPP) comprises a family of two highly related multiprotein complexes, with seven common subunits, that serve to target different classes of transport vesicles to their appropriate compartments. Defining the architecture of the complexes will advance our understanding of the functional differences between these highly related molecular machines. Genetic analyses in yeast suggested a specific interaction between the TRAPP subunits Bet3p and Trs33p. A mammalian bet3-trs33 complex was crystallized, and the structure was solved to 2.2 angstroms resolution. Intriguingly, the overall fold of the bet3 and trs33 monomers was similar, although the proteins had little overall sequence identity. In vitro experiments using yeast TRAPP subunits indicated that Bet3p binding to Trs33p facilitates the interaction between Bet3p and another TRAPP subunit, Bet5p. Mutational analysis suggests that yeast Trs33p facilitates other Bet3p protein-protein interactions. Furthermore, we show that Trs33p can increase the Golgi-localized pool of a mutated Bet3 protein normally found in the cytosol. We propose that one of the roles of Trs33p is to facilitate the incorporation of the Bet3p subunit into assembling TRAPP complexes.

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Organizational Affiliation: 

Center for Biomolecular Recognition, Department of Life Sciences and Division of Molecular and Life Sciences, Pohang University of Science and Technology, Pohang, Kyungbuk, 790-784, Korea.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TRAFFICKING PROTEIN PARTICLE COMPLEX SUBUNIT 3	A	161	Homo sapiens	Mutation(s): 0  Gene Names: TRAPPC3, BET3, CDABP0066
Find proteins for O43617 (Homo sapiens) Explore O43617  Go to UniProtKB:  O43617
NIH Common Fund Data Resources
PHAROS  O43617 GTEx  ENSG00000054116

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
R32611_2	B	160	Homo sapiens	Mutation(s): 0  Gene Names: TRAPPC6A, HSPC289
Find proteins for O75865 (Homo sapiens) Explore O75865  Go to UniProtKB:  O75865
NIH Common Fund Data Resources
PHAROS  O75865 GTEx  ENSG00000007255

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PLM	A	PALMITIC ACID C16 H32 O2 IPCSVZSSVZVIGE-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.237 
• R-Value Work: 0.219 
• R-Value Observed: 0.219 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 52.877	α = 90
b = 70.515	β = 90
c = 88.965	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-09-03 
• Released Date: 2006-02-07 
Deposition Author(s): Kim, M.-S., Yi, M.-J., Lee, K.-H., Wagner, J., Munger, C., Kim, Y.-G., Whiteway, M., Cygler, M., Oh, B.-H., Sacher, M.

Revision History 

• Version 1.0: 2006-02-07
  Type: Initial release
  
• Version 1.1: 2011-10-26
  Changes: Atomic model, Database references, Derived calculations, Non-polymer description, Other, Refinement description, Structure summary, Version format compliance
• Version 1.2: 2015-01-14
  Changes: Derived calculations