7Z66

Crystal structure of the tandem kinase & triphosphate tunnel metalloenzyme domain module of the TTM1 protein from Arabidoposis thaliana in complex with inorganic phosphate and citric acid.

• PDB DOI: https://doi.org/10.2210/pdb7Z66/pdb

• Classification: UNKNOWN FUNCTION
• Organism(s): Arabidopsis thaliana
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2022-03-11 Released: 2022-04-06 
• Deposition Author(s): Hothorn, M., Martinez, J.
• Funding Organization(s): European Research Council (ERC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.235 
• R-Value Work: 0.213 
• R-Value Observed: 0.214 

Literature

Structural and biological insight into the plant unique multimodular triphosphosphate tunnel metalloenzymes of Arabidopsis thaliana

Pesquera, M., Martinez, J., Wang, K., Hofmann, M., Loubery, S., Steensma, P., Hothorn, M., Fitzpatrick, T.B.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 45.96 kDa 
• Atom Count: 3,221 
• Modelled Residue Count: 393 
• Deposited Residue Count: 396 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Inorganic pyrophosphatase TTM1	A [auth AAAA]	396	Arabidopsis thaliana	Mutation(s): 0  Gene Names: TTM1, At1g73980, F2P9.15 EC: 3.6.1.1
UniProt
Find proteins for Q9C9B9 (Arabidopsis thaliana) Explore Q9C9B9  Go to UniProtKB:  Q9C9B9

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CIT (Subject of Investigation/LOI)	B [auth AAAA]	CITRIC ACID C6 H8 O7 KRKNYBCHXYNGOX-UHFFFAOYSA-N
PO4 (Subject of Investigation/LOI)	D [auth AAAA]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K
EDO	C [auth AAAA]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A [auth AAAA]	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.235 
• R-Value Work: 0.213 
• R-Value Observed: 0.214 
• Space Group: P 6₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 93.712	α = 90
b = 93.712	β = 90
c = 267.744	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
PHENIX	refinement
XDS	data reduction
XSCALE	data scaling
SHELXCD	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2022-04-06 
Deposition Author(s): Hothorn, M., Martinez, J.

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Funding Organization	Location	Grant Number
European Research Council (ERC)	European Union	310856

Revision History  

• Version 1.0: 2022-04-06
  Type: Initial release