6S6S

Structure of Azospirillum brasilense Glutamate Synthase in a4b4 oligomeric state.


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.9 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Cryo-EM Structures of Azospirillum brasilense Glutamate Synthase in its Oligomeric Assemblies.

Swuec, P.Chaves-Sanjuan, A.Camilloni, C.Vanoni, M.A.Bolognesi, M.

(2019) J.Mol.Biol. --: --

  • DOI: 10.1016/j.jmb.2019.08.011
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Bacterial NADPH-dependent glutamate synthase (GltS) is a complex iron-sulfur flavoprotein that catalyzes the reductive synthesis of two L-Glu molecules from L-Gln and 2-oxo-glutarate. GltS functional unit hosts an α-subunit (αGltS) and a β-subunit (β ...

    Bacterial NADPH-dependent glutamate synthase (GltS) is a complex iron-sulfur flavoprotein that catalyzes the reductive synthesis of two L-Glu molecules from L-Gln and 2-oxo-glutarate. GltS functional unit hosts an α-subunit (αGltS) and a β-subunit (βGltS) that assemble in different αβ oligomers in solution. Here, we present the cryo-electron microscopy structures of Azospirillum brasilense GltS in four different oligomeric states (α 4 β 3 , α 4 β 4 , α 6 β 4 and α 6 β 6 , in the 3.5-4.1 Å resolution range). Our study provides a comprehensive GltS model, which details the inter-protomeric assemblies, allows unequivocal location of the FAD cofactor and of two electron transfer [4Fe-4S] +1,+2 clusters within βGltS.


    Organizational Affiliation

    Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133, Milano, Italy; Centro di Ricerca Pediatrica Romeo ed Enrica Invernizzi, Università degli Studi di Milano, Via Celoria 26, 20133, Milano, Italy.,Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133, Milano, Italy.,Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133, Milano, Italy; Centro di Ricerca Pediatrica Romeo ed Enrica Invernizzi, Università degli Studi di Milano, Via Celoria 26, 20133, Milano, Italy. Electronic address: martino.bolognesi@unimi.it.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Glutamate synthase [NADPH] large chain
A, B, C, D
1515Azospirillum brasilenseMutation(s): 0 
Gene Names: gltB
EC: 1.4.1.13
Find proteins for Q05755 (Azospirillum brasilense)
Go to UniProtKB:  Q05755
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Glutamate synthase [NADPH] small chain
G, E, F, H
482Azospirillum brasilenseMutation(s): 0 
Gene Names: gltD
EC: 1.4.1.13
Find proteins for Q05756 (Azospirillum brasilense)
Go to UniProtKB:  Q05756
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SF4
Query on SF4

Download SDF File 
Download CCD File 
E, F, G, H
IRON/SULFUR CLUSTER
Fe4 S4
LJBDFODJNLIPKO-VKOJMFJBAC
 Ligand Interaction
F3S
Query on F3S

Download SDF File 
Download CCD File 
A, B, C, D
FE3-S4 CLUSTER
Fe3 S4
FCXHZBQOKRZXKS-MZMDZPPWAW
 Ligand Interaction
FMN
Query on FMN

Download SDF File 
Download CCD File 
A, B, C, D
FLAVIN MONONUCLEOTIDE
RIBOFLAVIN MONOPHOSPHATE
C17 H21 N4 O9 P
FVTCRASFADXXNN-SCRDCRAPSA-N
 Ligand Interaction
FAD
Query on FAD

Download SDF File 
Download CCD File 
E, F, G, H
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.9 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
Software Package:
Software NamePurpose
PHENIXrefinement
phenix.real_space_refinerefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-09-11
    Type: Initial release