9QDG | pdb_00009qdg

Nitratidesulfovibrio vulgaris [FeFe] hydrogenase crystallized in the sodium propionate buffer at pH 5.0

• PDB DOI: https://doi.org/10.2210/pdb9QDG/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Nitratidesulfovibrio vulgaris str. Hildenborough
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2025-03-06 Released: 2026-03-18 
• Deposition Author(s): Bikbaev, K., Span, I.
• Funding Organization(s): German Research Foundation (DFG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.02 Å
• R-Value Free: 
  0.207 (Depositor), 0.210 (DCC) 
• R-Value Work: 
  0.194 (Depositor), 0.196 (DCC) 

Starting Model: experimental

Literature

Impact of the acidic conditions on [FeFe]-Hydrogenase from Nitratidesulfovibrio vulgaris str. Hildenborough

Bikbaev, K., Span, I.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

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

Macromolecule Content 

• Total Structure Weight: 55.89 kDa 
• Atom Count: 4,266 
• Modeled Residue Count: 481 
• Deposited Residue Count: 493 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Periplasmic [Fe] hydrogenase small subunit	A [auth B]	88	Nitratidesulfovibrio vulgaris str. Hildenborough	Mutation(s): 0  Gene Names: hydB, DVU_1770 EC: 1.12.7.2
UniProt
Find proteins for P07603 (Nitratidesulfovibrio vulgaris (strain ATCC 29579 / DSM 644 / CCUG 34227 / NCIMB 8303 / VKM B-1760 / Hildenborough)) Explore P07603  Go to UniProtKB:  P07603

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Periplasmic [Fe] hydrogenase large subunit	B [auth A]	405	Nitratidesulfovibrio vulgaris str. Hildenborough	Mutation(s): 0  Gene Names: hydA, DVU_1769 EC: 1.12.7.2
UniProt
Find proteins for P07598 (Nitratidesulfovibrio vulgaris (strain ATCC 29579 / DSM 644 / CCUG 34227 / NCIMB 8303 / VKM B-1760 / Hildenborough)) Explore P07598  Go to UniProtKB:  P07598

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
402 (Subject of Investigation/LOI)	C [auth A]	dicarbonyl[bis(cyanide-kappaC)]-mu-(iminodimethanethiolatato-1kappaS:2kappaS)-mu-(oxomethylidene)diiron(2+) C7 H5 Fe2 N3 O3 S2 LJPDYWPSPOWMIB-UHFFFAOYSA-N
SF4 (Subject of Investigation/LOI)	D [auth A], E [auth A], F [auth A]	IRON/SULFUR CLUSTER Fe4 S4 LJBDFODJNLIPKO-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.02 Å
• R-Value Free:  0.207 (Depositor), 0.210 (DCC) 
• R-Value Work:  0.194 (Depositor), 0.196 (DCC) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 49.724	α = 90
b = 87.705	β = 90
c = 89.684	γ = 90

Software Package:

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

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-03-18 
Deposition Author(s): Bikbaev, K., 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: 2026-03-18
  Type: Initial release