4V8V | pdb_00004v8v

Structure and conformational variability of the Mycobacterium tuberculosis fatty acid synthase multienzyme complex

• PDB DOI: https://doi.org/10.2210/pdb4V8V/pdb
• Entry: 4V8V supersedes: 4BJD, 4BJE
• EM Map EMD-2358: EMDB EMDataResource

• Classification: HYDROLASE
• Organism(s): Mycobacterium tuberculosis
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2013-04-18 Released: 2014-07-09 
• Deposition Author(s): Ciccarelli, L., Connell, S.R., Enderle, M., Mills, D.J., Vonck, J., Grininger, M.

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 20.0 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Starting Model: experimental

Literature

Structure and Conformational Variability of the Mycobacterium Tuberculosis Fatty Acid Synthase Multienzyme Complex.

Ciccarelli, L., Connell, S.R., Enderle, M., Mills, D.J., Vonck, J., Grininger, M.

(2013) Structure 21: 1251

• PubMed: 23746808 
• DOI: https://doi.org/10.1016/j.str.2013.04.023
• Primary Citation Related Structures: 
  4V8V, 4V8W


• PubMed Abstract: 
  

  Antibiotic therapy in response to Mycobacterium tuberculosis infections targets de novo fatty acid biosynthesis, which is orchestrated by a 1.9 MDa type I fatty acid synthase (FAS). Here, we characterize M. tuberculosis FAS by single-particle cryo-electron microscopy and interpret the data by docking the molecular models of yeast and Mycobacterium smegmatis FAS. Our analysis reveals a porous barrel-like structure of considerable conformational variability that is illustrated by the identification of several conformational states with altered topology in the multienzymatic assembly. This demonstrates that the barrel-like structure of M. tuberculosis FAS is not just a static scaffold for the catalytic domains, but may play an active role in coordinating fatty acid synthesis. The conception of M. tuberculosis FAS as a highly dynamic assembly of domains revises the view on bacterial type I fatty acid synthesis and might inspire new strategies for inhibition of de novo fatty acid synthesis in M. tuberculosis.

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Organizational Affiliation: 
• Department of Structural Biology, Max-Planck-Institute of Biophysics, Max-von-Laue-Str. 3, 60438 Frankfurt, Germany.

Biological Assembly 1  

Global Symmetry: Dihedral - D3  (Explore in 3D)
Global Stoichiometry: Homo 6-mer - A6 

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

Macromolecule Content 

• Total Structure Weight: 1,982.07 kDa 
• Atom Count: 125,856 
• Modeled Residue Count: 16,932 
• Deposited Residue Count: 18,534 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TYPE-I FATTY ACID SYNTHASE	A, B, C, D, E, F	3,089	Mycobacterium tuberculosis	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FMN	G [auth A], H [auth B], I [auth C], J [auth D], K [auth E], L [auth F]	FLAVIN MONONUCLEOTIDE C17 H21 N4 O9 P FVTCRASFADXXNN-SCRDCRAPSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 20.0 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	EMAN	2
RECONSTRUCTION	SPARX

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-07-09 
Deposition Author(s): Ciccarelli, L., Connell, S.R., Enderle, M., Mills, D.J., Vonck, J., Grininger, M.
• This entry supersedes: 4BJD, 4BJE

Revision History  

• Version 1.0: 2014-07-09
  Type: Initial release
  
• Version 1.1: 2014-12-10
  Changes: Other
• Version 2.0: 2017-08-02
  Changes: Advisory, Atomic model, Data collection
• Version 2.1: 2019-12-11
  Changes: Other
• Version 2.2: 2020-07-29
  Changes: Source and taxonomy
• Version 2.3: 2024-05-08
  Changes: Data collection, Database references, Refinement description