5N7K | pdb_00005n7k

Crystal structure of the coiled-coil domain of human tricellulin

• PDB DOI: https://doi.org/10.2210/pdb5N7K/pdb

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


• Deposited: 2017-02-20 Released: 2017-07-12 
• Deposition Author(s): Schuetz, A., Heinemann, U.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.81 Å
• R-Value Free: 
  0.242 (Depositor), 0.252 (DCC) 
• R-Value Work: 
  0.215 (Depositor), 0.220 (DCC) 
• R-Value Observed: 
  0.217 (Depositor) 

Starting Model: experimental

Literature

Crystal structure of the tricellulin C-terminal coiled-coil domain reveals a unique mode of dimerization.

Schuetz, A., Radusheva, V., Krug, S.M., Heinemann, U.

(2017) Ann N Y Acad Sci 1405: 147-159

• PubMed: 28661558 
• DOI: https://doi.org/10.1111/nyas.13408
• Primary Citation Related Structures: 
  5N7H, 5N7I, 5N7K


• PubMed Abstract: 
  

  Tricellulin is a tight junction protein localized to tricellular contacts in many epithelial tissues, where it is required for full barrier control. Here, we present crystal structures of the tricellulin C-terminal coiled-coil domain, revealing a potential dimeric arrangement. By combining structural, biochemical, functional, and mutation analyses, we gain insight into the mode of tricellulin oligomerization and suggest a model where dimerization of its cytoplasmic C-terminus may play an auxiliary role in stabilizing homophilic and potentially also heterophilic cis-interactions within tight junctions.

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Organizational Affiliation: 
• Helmholtz Protein Sample Production Facility, Max Delbrück Center for Molecular Medicine, Berlin, Germany.
Institute of Clinical Physiology, Campus Benjamin Franklin, Charité - Universitätsmedizin Berlin, Berlin, Germany.
Macromolecular Structure and Interaction, Max Delbrück Center for Molecular Medicine, Berlin, Germany.
Chemistry and Biochemistry Institute, Freie Universität Berlin, Berlin, Germany.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 3 assigned by authors.

Biological Assembly 4  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 4 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 55.91 kDa 
• Atom Count: 3,789 
• Modeled Residue Count: 442 
• Deposited Residue Count: 460 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MARVEL domain-containing protein 2	A, B, C, D	115	Homo sapiens	Mutation(s): 0  Gene Names: MARVELD2, TRIC
UniProt & NIH Common Fund Data Resources
Find proteins for Q8N4S9 (Homo sapiens) Explore Q8N4S9  Go to UniProtKB:  Q8N4S9
PHAROS:  Q8N4S9 GTEx:  ENSG00000152939

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.81 Å
• R-Value Free:  0.242 (Depositor), 0.252 (DCC) 
• R-Value Work:  0.215 (Depositor), 0.220 (DCC) 
• R-Value Observed: 0.217 (Depositor) 

Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 82.621	α = 90
b = 82.621	β = 90
c = 188.825	γ = 120

Software Package:

Software Name	Purpose
BUSTER	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2017-07-12 
Deposition Author(s): Schuetz, A., Heinemann, U.

Revision History  

• Version 1.0: 2017-07-12
  Type: Initial release
  
• Version 1.1: 2017-10-18
  Changes: Database references
• Version 1.2: 2024-01-17
  Changes: Data collection, Database references, Refinement description