Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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: 39.83 kDa 
• Atom Count: 3154 
• Residue Count: 352 
• Unique protein chains: 1

5A10

The crystal structure of Ta-TFP, a thiocyanate-forming protein involved in glucosinolate breakdown (space group C2)

• DOI: 10.2210/pdb5A10/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Thlaspi arvense
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2015-04-27 Released: 2015-08-26 
• Deposition Author(s): Krausze, J., Gumz, F., Wittstock, U.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.42 Å
• R-Value Free: 0.176 
• R-Value Work: 0.157 
• R-Value Observed: 0.158 

Literature

The Crystal Structure of the Thiocyanate-Forming Protein from Thlaspi Arvense, a Kelch Protein Involved in Glucosinolate Breakdown.

Gumz, F., Krausze, J., Eisenschmidt, D., Backenkohler, A., Barleben, L., Brandt, W., Wittstock, U.

(2015) Plant Mol Biol 89: 67

• PubMed: 26260516 
• DOI: 10.1007/s11103-015-0351-9
• Primary Citation of Related Structures:  
  5A10, 5A11


• PubMed Abstract: 
  

Kelch repeat-containing proteins are involved in diverse cellular processes, but only a small subset of plant kelch proteins has been functionally characterized. Thiocyanate-forming protein (TFP) from field-penny cress, Thlaspi arvense (Brassicaceae), is a representative of specifier proteins, a group of kelch proteins involved in plant specialized metabolism. As components of the glucosinolate-myrosinase system of the Brassicaceae, specifier proteins determine the profile of bioactive products formed when plant tissue is disrupted and glucosinolates are hydrolyzed by myrosinases. Here, we describe the crystal structure of TaTFP at a resolution of 1.4 Å. TaTFP crystallized as homodimer. Each monomer forms a six-blade β-propeller with a wide "top" and a narrower "bottom" opening with distinct strand-connecting loops protruding far beyond the lower propeller surface. Molecular modeling and mutational analysis identified residues for glucosinolate aglucone and Fe(2+) cofactor binding within these loops. As the first experimentally determined structure of a plant kelch protein, the crystal structure of TaTFP not only enables more detailed mechanistic studies on glucosinolate breakdown product formation, but also provides a new basis for research on the diverse roles and mechanisms of other kelch proteins in plants.

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Organizational Affiliation: 

Institute of Pharmaceutical Biology, Technische Universität Braunschweig, Mendelssohnstr. 1, 38106, Braunschweig, Germany. [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
THIOCYANATE FORMING PROTEIN	A	356	Thlaspi arvense	Mutation(s): 0
Find proteins for G1FNI6 (Thlaspi arvense) Explore G1FNI6  Go to UniProtKB:  G1FNI6

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ACT	A	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M
NA	A	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.42 Å
• R-Value Free: 0.176 
• R-Value Work: 0.157 
• R-Value Observed: 0.158 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 119.39	α = 90
b = 48.96	β = 109.71
c = 68.27	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2015-04-27 
• Released Date: 2015-08-26 
Deposition Author(s): Krausze, J., Gumz, F., Wittstock, U.

Revision History 

• Version 1.0: 2015-08-26
  Type: Initial release
  
• Version 1.1: 2015-09-02
  Changes: Data collection
• Version 1.2: 2015-09-30
  Changes: Database references