8T0Z

Human liver-type glutaminase (K253A) with L-Gln, filamentous form

  • Classification: HYDROLASE
  • Organism(s): Homo sapiens
  • Expression System: Escherichia coli
  • Mutation(s): Yes 

  • Deposited: 2023-06-01 Released: 2024-03-13 
  • Deposition Author(s): Feng, S., Aplin, C., Nguyen, T.-T.T., Milano, S.K., Cerione, R.A.
  • Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), National Institutes of Health/National Cancer Institute (NIH/NCI), National Science Foundation (NSF, United States), National Institutes of Health/Office of the Director, Simons Foundation

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.30 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Filament formation drives catalysis by glutaminase enzymes important in cancer progression.

Feng, S.Aplin, C.Nguyen, T.T.Milano, S.K.Cerione, R.A.

(2024) Nat Commun 15: 1971-1971

  • DOI: https://doi.org/10.1038/s41467-024-46351-3
  • Primary Citation of Related Structures:  
    8SZJ, 8SZL, 8T0Z

  • PubMed Abstract: 

    The glutaminase enzymes GAC and GLS2 catalyze the hydrolysis of glutamine to glutamate, satisfying the 'glutamine addiction' of cancer cells. They are the targets of anti-cancer drugs; however, their mechanisms of activation and catalytic activity have been unclear. Here we demonstrate that the ability of GAC and GLS2 to form filaments is directly coupled to their catalytic activity and present their cryo-EM structures which provide a view of the conformational states essential for catalysis. Filament formation guides an 'activation loop' to assume a specific conformation that works together with a 'lid' to close over the active site and position glutamine for nucleophilic attack by an essential serine. Our findings highlight how ankyrin repeats on GLS2 regulate enzymatic activity, while allosteric activators stabilize, and clinically relevant inhibitors block, filament formation that enables glutaminases to catalyze glutaminolysis and support cancer progression.


  • Organizational Affiliation

    Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glutaminase liver isoform, mitochondrial602Homo sapiensMutation(s): 1 
Gene Names: GLS2GA
EC: 3.5.1.2
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UI32 (Homo sapiens)
Explore Q9UI32 
Go to UniProtKB:  Q9UI32
PHAROS:  Q9UI32
GTEx:  ENSG00000135423 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9UI32
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
GLN (Subject of Investigation/LOI)
Query on GLN

Download Ideal Coordinates CCD File 
M [auth A]
N [auth B]
O [auth C]
P [auth D]
Q [auth E]
M [auth A],
N [auth B],
O [auth C],
P [auth D],
Q [auth E],
R [auth G],
S [auth I],
T [auth K],
U [auth F],
V [auth H],
W [auth J],
X [auth L]
GLUTAMINE
C5 H10 N2 O3
ZDXPYRJPNDTMRX-VKHMYHEASA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.30 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX1.20.1_4487:

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR35GM122575
National Institutes of Health/National Cancer Institute (NIH/NCI)United StatesR01CA201402
National Science Foundation (NSF, United States)United StatesDMR-1719875
National Institutes of Health/Office of the DirectorUnited StatesS10OD030470-01
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesU24 GM129539
Simons FoundationUnited StatesSF349247
National Institutes of Health/National Cancer Institute (NIH/NCI)United StatesR01CA223534

Revision History  (Full details and data files)

  • Version 1.0: 2024-03-13
    Type: Initial release