6EXR | pdb_00006exr

CHEMOTAXIS PROTEIN CHEY FROM Pyrococcus horikoshiI

• PDB DOI: https://doi.org/10.2210/pdb6EXR/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Pyrococcus horikoshii OT3
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2017-11-09 Released: 2018-12-12 
• Deposition Author(s): Paithankar, K.S., Enderle, M.E., Wirthensohn, D., Grininger, M., Oesterhelt, D.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.16 Å
• R-Value Free: 
  0.275 (Depositor), 0.280 (DCC) 
• R-Value Work: 
  0.242 (Depositor), 0.250 (DCC) 

Starting Model: experimental

Literature

Structure of the archaeal chemotaxis protein CheY in a domain-swapped dimeric conformation.

Paithankar, K.S., Enderle, M., Wirthensohn, D.C., Miller, A., Schlesner, M., Pfeiffer, F., Rittner, A., Grininger, M., Oesterhelt, D.

(2019) Acta Crystallogr F Struct Biol Commun 75: 576-585

• PubMed: 31475924 
• DOI: https://doi.org/10.1107/S2053230X19010896
• Primary Citation of Related Structures:  
  6ER7, 6EXR


• PubMed Abstract: 
  

  Archaea are motile by the rotation of the archaellum. The archaellum switches between clockwise and counterclockwise rotation, and movement along a chemical gradient is possible by modulation of the switching frequency. This modulation involves the response regulator CheY and the archaellum adaptor protein CheF. In this study, two new crystal forms and protein structures of CheY are reported. In both crystal forms, CheY is arranged in a domain-swapped conformation. CheF, the protein bridging the chemotaxis signal transduction system and the motility apparatus, was recombinantly expressed, purified and subjected to X-ray data collection.

---

Organizational Affiliation: 

Institute of Organic Chemistry and Chemical Biology, Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, Max-von-Laue-Strasse 15, 60438 Frankfurt am Main, Germany.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 12-mer - A12 

Biological assembly 1 generated by PISA (software)

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 79.14 kDa 
• Atom Count: 5,344 
• Modelled Residue Count: 698 
• Deposited Residue Count: 720 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
120aa long hypothetical chemotaxis protein (CheY)	A, B, C, D, E, F	120	Pyrococcus horikoshii OT3	Mutation(s): 0  Gene Names: PH0482
UniProt
Find proteins for O58193 (Pyrococcus horikoshii (strain ATCC 700860 / DSM 12428 / JCM 9974 / NBRC 100139 / OT-3)) Explore O58193  Go to UniProtKB:  O58193

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.16 Å
• R-Value Free:  0.275 (Depositor), 0.280 (DCC) 
• R-Value Work:  0.242 (Depositor), 0.250 (DCC) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 109.14	α = 90
b = 124.37	β = 111.75
c = 73.42	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
xia2	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2018-12-12 
Deposition Author(s): Paithankar, K.S., Enderle, M.E., Wirthensohn, D., Grininger, M., Oesterhelt, D.

Revision History  

• Version 1.0: 2018-12-12
  Type: Initial release
  
• Version 1.1: 2019-09-11
  Changes: Data collection, Database references
• Version 1.2: 2024-01-17
  Changes: Data collection, Database references, Refinement description