8RYA | pdb_00008rya

CryoEM structure of M. smegmatis GMP reductase apoform at pH 7.8, tetramer.

• PDB DOI: https://doi.org/10.2210/pdb8RYA/pdb
• EM Map EMD-19592: EMDB EMDataResource

• Classification: OXIDOREDUCTASE
• Organism(s): Mycolicibacterium smegmatis
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2024-02-08 Released: 2025-08-20 
• Deposition Author(s): Dolezal, M., Kouba, T., Svachova, H., Pichova, I.
• Funding Organization(s): European Union (EU)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.82 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structural basis for allosteric regulation of mycobacterial guanosine 5'-monophosphate reductase with ATP and GTP.

Dolezal, M., Knejzlik, Z., Kouba, T., Filimonenko, A., Svachova, H., Klima, M., Pichova, I.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C4  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 207.13 kDa 
• Atom Count: 13,724 
• Modeled Residue Count: 1,880 
• Deposited Residue Count: 1,984 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
GMP reductase	A, B, C, D	496	Mycolicibacterium smegmatis	Mutation(s): 0  Gene Names: guaB1, MSMEG_3634, MSMEI_3548 EC: 1.7.1.7
UniProt
Find proteins for A0QYE8 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155)) Explore A0QYE8  Go to UniProtKB:  A0QYE8

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.82 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	RELION	4.0
MODEL REFINEMENT	PHENIX	1.21rc1_4985
MODEL REFINEMENT	Coot	0.9.8.1
MODEL REFINEMENT	ISOLDE	1.5

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-08-20 
Deposition Author(s): Dolezal, M., Kouba, T., Svachova, H., Pichova, I.

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Funding Organization	Location	Grant Number
European Union (EU)	European Union	LX22NPO5103

Revision History  

• Version 1.0: 2025-08-20
  Type: Initial release