30QX | pdb_000030qx

Cryo-EM structure of the E. coli DRT10 RT-ncRNA complex, Eco3 subtype with dNTPs

• PDB DOI: https://doi.org/10.2210/pdb30QX/pdb
• EM Map EMD-57972: EMDB EMDataResource

• Classification: RNA BINDING PROTEIN
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2026-05-09 Released: 2026-10-07 
• Deposition Author(s): He, Q., Ramirez, J.
• Funding Organization(s): Howard Hughes Medical Institute (HHMI)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.30 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Cryo-EM structure of the E. coli DRT10 RT-ncRNA complex, Eco3 subtype with dNTPs

He, Q., Ramirez, J.

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 and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 149.81 kDa 
• Atom Count: 9,983 
• Modeled Residue Count: 1,029 
• Deposited Residue Count: 1,049 
• Unique protein chains: 1
• Unique nucleic acid chains: 1

Macromolecules

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Reverse transcriptase	B [auth A], C [auth B]	456	Escherichia coli	Mutation(s): 0  Gene Names: A2J79_003680, HMV95_08335

Entity ID: 1
Molecule	Chains	Length	Organism	Image
ncRNA component of Eco3DRT10 from E.coli.	A [auth 1]	137	Escherichia coli

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
DGT (Subject of Investigation/LOI)	E [auth B]	2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE C10 H16 N5 O13 P3 HAAZLUGHYHWQIW-KVQBGUIXSA-N
DTP	D [auth A]	2'-DEOXYADENOSINE 5'-TRIPHOSPHATE C10 H16 N5 O12 P3 SUYVUBYJARFZHO-RRKCRQDMSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.30 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	RELION	3

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-10-07 
Deposition Author(s): He, Q., Ramirez, J.

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Funding Organization	Location	Grant Number
Howard Hughes Medical Institute (HHMI)	United States	--

Revision History  

• Version 1.0: 2026-10-07
  Type: Initial release