Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

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

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 38.67 kDa 
• Atom Count: 2633 
• Modelled Residue Count: 347 
• Deposited Residue Count: 368 
• Unique protein chains: 2

4B45

CetZ2 from Haloferax volcanii - GTPgS bound protofilament

• PDB DOI: 10.2210/pdb4B45/pdb

• Classification: STRUCTURAL PROTEIN
• Organism(s): Haloferax volcanii
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2012-07-27 Released: 2013-08-14 
• Deposition Author(s): Aylett, C.H.S., Duggin, I.G., Lowe, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.228 
• R-Value Work: 0.177 
• R-Value Observed: 0.180 

Literature

Cetz Tubulin-Like Proteins Control Archaeal Cell Shape

Duggin, I.G., Aylett, C.H.S., Walsh, J.C., Michie, K.A., Wang, Q., Turnbull, L., Dawson, E.M., Harry, E.J., Whitchurch, C.B., Amos, A., Lowe, J.

(2015) Nature 519: 362

• PubMed: 25533961 
• DOI: 10.1038/nature13983
• Primary Citation of Related Structures:  
  3ZID, 4B45, 4B46


• PubMed Abstract: 
  

Tubulin is a major component of the eukaryotic cytoskeleton, controlling cell shape, structure and dynamics, whereas its bacterial homologue FtsZ establishes the cytokinetic ring that constricts during cell division. How such different roles of tubulin and FtsZ evolved is unknown. Studying Archaea may provide clues as these organisms share characteristics with Eukarya and Bacteria. Here we report the structure and function of proteins from a distinct family related to tubulin and FtsZ, named CetZ, which co-exists with FtsZ in many archaea. CetZ X-ray crystal structures showed the FtsZ/tubulin superfamily fold, and one crystal form contained sheets of protofilaments, suggesting a structural role. However, inactivation of CetZ proteins in Haloferax volcanii did not affect cell division. Instead, CetZ1 was required for differentiation of the irregular plate-shaped cells into a rod-shaped cell type that was essential for normal swimming motility. CetZ1 formed dynamic cytoskeletal structures in vivo, relating to its capacity to remodel the cell envelope and direct rod formation. CetZ2 was also implicated in H. volcanii cell shape control. Our findings expand the known roles of the FtsZ/tubulin superfamily to include archaeal cell shape dynamics, suggesting that a cytoskeletal role might predate eukaryotic cell evolution, and they support the premise that a major function of the microbial rod shape is to facilitate swimming.

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Organizational Affiliation: 

Medical Research Council Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CELL DIVISION PROTEIN FTSZ	A	349	Haloferax volcanii	Mutation(s): 0
UniProt
Find proteins for D4GTC1 (Haloferax volcanii (strain ATCC 29605 / DSM 3757 / JCM 8879 / NBRC 14742 / NCIMB 2012 / VKM B-1768 / DS2)) Explore D4GTC1  Go to UniProtKB:  D4GTC1

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
CELL DIVISION PROTEIN FTSZ	B	19	Haloferax volcanii	Mutation(s): 0
UniProt
Find proteins for D4GTC1 (Haloferax volcanii (strain ATCC 29605 / DSM 3757 / JCM 8879 / NBRC 14742 / NCIMB 2012 / VKM B-1768 / DS2)) Explore D4GTC1  Go to UniProtKB:  D4GTC1

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GSP	C [auth A]	5'-GUANOSINE-DIPHOSPHATE-MONOTHIOPHOSPHATE C10 H16 N5 O13 P3 S XOFLBQFBSOEHOG-UUOKFMHZSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.228 
• R-Value Work: 0.177 
• R-Value Observed: 0.180 
• Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.427	α = 68.87
b = 43.224	β = 75.34
c = 48.45	γ = 86.9

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-07-27 
• Released Date: 2013-08-14 
Deposition Author(s): Aylett, C.H.S., Duggin, I.G., Lowe, J.

Revision History  

• Version 1.0: 2013-08-14
  Type: Initial release
  
• Version 1.1: 2013-08-21
  Changes: Other, Structure summary
• Version 1.2: 2014-12-17
  Changes: Database references
• Version 1.3: 2014-12-24
  Changes: Derived calculations
• Version 1.4: 2015-01-14
  Changes: Database references, Derived calculations
• Version 1.5: 2015-03-25
  Changes: Database references