9QL0 | pdb_00009ql0

E. coli IspH crystallized in the presence of adenosine hemisulfate

• PDB DOI: https://doi.org/10.2210/pdb9QL0/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Escherichia coli K-12
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2025-03-20 Released: 2026-04-08 
• Deposition Author(s): Bikbaev, K., Dormann, C., Span, I.
• Funding Organization(s): German Research Foundation (DFG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 
  0.253 (Depositor), 0.250 (DCC) 
• R-Value Work: 
  0.208 (Depositor), 0.204 (DCC) 

Starting Model: experimental

Literature

Structure of E. coli IspH crystallized in the presence of adenosine hemisulfate

Bikbaev, K., Dormann, C., Span, I.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 73.11 kDa 
• Atom Count: 5,233 
• Modeled Residue Count: 636 
• Deposited Residue Count: 654 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
4-hydroxy-3-methylbut-2-enyl diphosphate reductase	A, B	327	Escherichia coli K-12	Mutation(s): 0  Gene Names: ispH, lytB, yaaE, b0029, JW0027 EC: 1.17.7.4
UniProt
Find proteins for P62623 (Escherichia coli (strain K12)) Explore P62623  Go to UniProtKB:  P62623

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SF4 (Subject of Investigation/LOI)	C [auth A], E [auth B]	IRON/SULFUR CLUSTER Fe4 S4 LJBDFODJNLIPKO-UHFFFAOYSA-N
SO4 (Subject of Investigation/LOI)	D [auth A], F [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free:  0.253 (Depositor), 0.250 (DCC) 
• R-Value Work:  0.208 (Depositor), 0.204 (DCC) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 67.909	α = 90
b = 81.291	β = 90
c = 112.871	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
Coot	model building
XDS	data reduction
Aimless	data scaling
MOLREP	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2026-04-08 
Deposition Author(s): Bikbaev, K., Dormann, C., Span, I.

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Funding Organization	Location	Grant Number
German Research Foundation (DFG)	Germany	SP 1476/4-1

Revision History  

• Version 1.0: 2026-04-08
  Type: Initial release