Biological Assembly 1  

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Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Homo 6-mer - A6 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 339632.50 
• Atom Count: 21429 
• Residue Count: 3048 
• Unique protein chains: 1

4EIW

Whole cytosolic region of atp-dependent metalloprotease FtsH (G399L)

• DOI: 10.2210/pdb4EIW/pdb

• Classification: HYDROLASE
• Organism(s): Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
• Expression System: Escherichia coli
• Mutation(s): 1 


• Deposited: 2012-04-06 Released: 2012-06-06 
• Deposition Author(s): Suno, R., Niwa, H., Tsuchiya, D., Yoshida, M., Morikawa, K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.9 Å
• R-Value Free: 0.312 
• R-Value Work: 0.299 

Literature

Structure of the whole cytosolic region of ATP-dependent protease FtsH

Suno, R., Niwa, H., Tsuchiya, D., Zhang, X., Yoshida, M., Morikawa, K.

(2006) Mol.Cell 22: 575-585

• PubMed: 16762831 
• DOI: 10.1016/j.molcel.2006.04.020
• Primary Citation of Related Structures:  
  2DI4, 2DHR


• PubMed Abstract: 
  

An ATP-dependent protease, FtsH, digests misassembled membrane proteins in order to maintain membrane integrity and digests short-lived soluble proteins in order to control their cellular regulation. This enzyme has an N-terminal transmembrane segment and a C-terminal cytosolic region consisting of an AAA+ ATPase domain and a protease domain. Here we present two crystal structures: the protease domain and the whole cytosolic region. The cytosolic region fully retains an ATP-dependent protease activity and adopts a three-fold-symmetric hexameric structure. The protease domains displayed a six-fold symmetry, while the AAA+ domains, each containing ADP, alternate two orientations relative to the protease domain, making "open" and "closed" interdomain contacts. Apparently, ATPase is active only in the closed form, and protease operates in the open form. The protease catalytic sites are accessible only through a tunnel following from the AAA+ domain of the adjacent subunit, raising a possibility of translocation of polypeptide substrate to the protease sites through this tunnel.

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Related Citations: 

• Hexameric ring structure of the ATPase domain of the membrane-integrated metalloprotease FtsH from Thermus thermophilus HB8
  Niwa, H.,Tsuchiya, D.,Makyio, H.,Yoshida, M.,Morikawa, K.
  (2002) Structure 10: 1415




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Organizational Affiliation: 

Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Yokohama 226-8503, Japan.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
ATP-dependent zinc metalloprotease FtsH	A, B, C, D, E, F	508	Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)	Mutation(s): 1  Gene Names: ftsH EC: 3.4.24.-
Find proteins for Q5SI82 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)) Go to UniProtKB:  Q5SI82

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
ADP	A, B, C, D, E, F	ADENOSINE-5'-DIPHOSPHATE C10 H15 N5 O10 P2 XTWYTFMLZFPYCI-KQYNXXCUSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.9 Å
• R-Value Free: 0.312 
• R-Value Work: 0.299 
• Space Group: P 3₁ 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 146.153	α = 90.00
b = 146.153	β = 90.00
c = 349.064	γ = 120.00

Software Package:

Software Name	Purpose
ADSC	data collection
MOSFLM	data reduction
SHARP	phasing
SCALA	data scaling
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-04-06 
• Released Date: 2012-06-06 
• Deposition Author(s): Suno, R., Niwa, H., Tsuchiya, D., Yoshida, M., Morikawa, K.

Revision History 

• Version 1.0: 2012-06-06
  Type: Initial release