9VCN | pdb_00009vcn

NAD-DEPENDENT DEHYDROGENASE

• PDB DOI: https://doi.org/10.2210/pdb9VCN/pdb

• Classification: BIOSYNTHETIC PROTEIN
• Organism(s): Amycolatopsis mediterranei S699
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2025-06-06 Released: 2026-06-10 
• Deposition Author(s): Niu, M., Shen, Y.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.39 Å
• R-Value Free: 
  0.250 (Depositor), 0.251 (DCC) 
• R-Value Work: 
  0.194 (Depositor), 0.195 (DCC) 
• R-Value Observed: 
  0.196 (Depositor) 

Starting Model: in silico

Literature

Key Branch Point of 8Deoxyrifamycin and Rifamycin Pathways

Niu, M., Shen, Y.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 4-mer - A2B2 Pseudo Symmetry: Dihedral - D2  (Explore in 3D)
Pseudo Stoichiometry: Homo 4-mer - A4 

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

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 124.45 kDa 
• Atom Count: 8,640 
• Modeled Residue Count: 1,151 
• Deposited Residue Count: 1,196 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
NADH-dependent dihydrogenase	A, C	342	Amycolatopsis mediterranei S699	Mutation(s): 0
UniProt
Find proteins for O52541 (Amycolatopsis mediterranei) Explore O52541  Go to UniProtKB:  O52541

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
RifT	B, D	256	Amycolatopsis mediterranei S699	Mutation(s): 0  Gene Names: rifT
UniProt
Find proteins for O52542 (Amycolatopsis mediterranei) Explore O52542  Go to UniProtKB:  O52542

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
US6	E [auth A], F [auth C]	(7E,9S,10S,11R,12R,13R,14R,15R,16S,17S,18E,20Z)-2,4,10,12,14,16-hexahydroxy-3,7,9,11,13,15,17,21-octamethyl-23-azatricyclo[22.3.1.05,27]octacosa-1,3,5(27),7,18,20,24-heptaene-6,22,26,28-tetrone C35 H45 N O10 VFGOUSMZKMNRLA-CVQHHNHTSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.39 Å
• R-Value Free:  0.250 (Depositor), 0.251 (DCC) 
• R-Value Work:  0.194 (Depositor), 0.195 (DCC) 
• R-Value Observed: 0.196 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 190.854	α = 90
b = 82.354	β = 100.04
c = 88.277	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
PHASER	phasing

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-06-10 
Deposition Author(s): Niu, M., Shen, Y.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	2019YFA090540
National Natural Science Foundation of China (NSFC)	China	81530091
National Natural Science Foundation of China (NSFC)	China	81673317
National Natural Science Foundation of China (NSFC)	China	IRT_17R68

Revision History  

• Version 1.0: 2026-06-10
  Type: Initial release