9Y5K | pdb_00009y5k

CryoEM structure of SufR from Mycobacterium tuberculosis bound to the promoter of the suf operon

• PDB DOI: https://doi.org/10.2210/pdb9Y5K/pdb
• EM Map EMD-72511: EMDB EMDataResource

• Classification: TRANSCRIPTION
• Organism(s): Mycobacterium tuberculosis H37Rv, synthetic construct
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2025-09-04 Released: 2026-09-16 
• Deposition Author(s): Lu, Z.F., Zhang, L.M.
• Funding Organization(s): National Institutes of Health/National Cancer Institute (NIH/NCI), National Science Foundation (NSF, United States)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.50 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Starting Model: in silico

Literature

CryoEM structure of SufR from Mycobacterium tuberculosis bound to the promoter of the suf operon

Lu, Z.F., Zhang, L.M.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 81.07 kDa 
• Atom Count: 4,673 
• Modeled Residue Count: 498 
• Deposited Residue Count: 568 
• Unique protein chains: 1
• Unique nucleic acid chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Probable transcriptional regulatory protein	A, B	234	Mycobacterium tuberculosis H37Rv	Mutation(s): 0  Gene Names: Rv1460
UniProt
Find proteins for O53151 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore O53151  Go to UniProtKB:  O53151

Entity ID: 2
Molecule	Chains	Length	Organism	Image
sufR promoter	C	50	synthetic construct

Entity ID: 3
Molecule	Chains	Length	Organism	Image
sufR promoter	D	50	synthetic construct

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SF4 (Subject of Investigation/LOI)	E [auth A], F [auth B]	IRON/SULFUR CLUSTER Fe4 S4 LJBDFODJNLIPKO-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.50 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	PHENIX	1.2
MODEL REFINEMENT	PHENIX	1.2

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-09-16 
Deposition Author(s): Lu, Z.F., Zhang, L.M.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Cancer Institute (NIH/NCI)	United States	R35 GM138157
National Science Foundation (NSF, United States)	United States	2033441

Revision History  

• Version 1.0: 2026-09-16
  Type: Initial release