9CE7

20S Proteasome core particle open gate variant

• PDB DOI: https://doi.org/10.2210/pdb9CE7/pdb
• EM Map EMD-45495: EMDB EMDataResource

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


• Deposited: 2024-06-26 Released: 2025-03-12 
• Deposition Author(s): Zeytuni, N., Uday, A.B., Vahidi, S., Turner, M.
• Funding Organization(s): Canadian Institutes of Health Research (CIHR), Natural Sciences and Engineering Research Council (NSERC, Canada)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.72 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structural basis for allosteric modulation of M. tuberculosis proteasome core particle

Turner, M., Uday, A.B., Velyvis, A., Rennella, E., Zeytuni, N., Vahidi, S.

To be published.

Biological Assembly 1  

Global Symmetry: Dihedral - D7  (Explore in 3D)
Global Stoichiometry: Hetero 28-mer - A14B14 Pseudo Symmetry: Dihedral - D7  (Explore in 3D)
Pseudo Stoichiometry: Homo 28-mer - A28 

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

Biological Assembly Evidence: electron microscopy

Macromolecule Content

• Total Structure Weight: 710.01 kDa 
• Atom Count: 46,144 
• Modelled Residue Count: 6,118 
• Deposited Residue Count: 6,678 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Proteasome subunit alpha	A, B, C, D, E, F, G, H, I, J, K, L, M, N	243	Mycobacterium tuberculosis	Mutation(s): 0  Gene Names: prcA, Rv2109c
UniProt
Find proteins for P9WHU1 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore P9WHU1  Go to UniProtKB:  P9WHU1

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Proteasome subunit beta	AA [auth a], BA [auth b], O, P, Q, R, S, T, U, V, W, X, Y, Z	234	Mycobacterium tuberculosis	Mutation(s): 0  Gene Names: prcB, Rv2110c EC: 3.4.25.1
UniProt
Find proteins for P9WHT9 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore P9WHT9  Go to UniProtKB:  P9WHT9

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.72 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	dev_5316
RECONSTRUCTION	cryoSPARC	4

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-03-12 
Deposition Author(s): Zeytuni, N., Uday, A.B., Vahidi, S., Turner, M.

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Funding Organization	Location	Grant Number
Canadian Institutes of Health Research (CIHR)	Canada	PJT451412
Natural Sciences and Engineering Research Council (NSERC, Canada)	Canada	RGPIN/03031-2022

Revision History  

• Version 1.0: 2025-03-12
  Type: Initial release