2PQ4

NMR solution structure of NapD in complex with NapA1-35 signal peptide

• PDB DOI: https://doi.org/10.2210/pdb2PQ4/pdb

• Classification: CHAPERONE/OXIDOREDUCTASE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2007-05-01 Released: 2008-05-20 
• Deposition Author(s): Minailiuc, O.M., Ekiel, I., Milad, M., Montreal-Kingston Bacterial Structural Genomics Initiative (BSGI)

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 40 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Solution structure of NapD, a private chaperone of periplasmic nitrate reductase NapA/B, in complex with NapA1-35 signal peptide.

Minailiuc, O.M., Ekiel, I., Cheng, J., Milad, M., Gandhi, S., Larocque, R., Cygler, M., Matte, A.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 13.19 kDa 
• Atom Count: 920 
• Modelled Residue Count: 125 
• Deposited Residue Count: 125 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein napD	A	90	Escherichia coli	Mutation(s): 0  Gene Names: napD, b2207, JW2195
UniProt
Find proteins for P0A9I5 (Escherichia coli (strain K12)) Explore P0A9I5  Go to UniProtKB:  P0A9I5

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Periplasmic nitrate reductase precursor	B	35	Escherichia coli	Mutation(s): 0  Gene Names: napA, b2206, JW2194 EC: 1.7.99.4 (PDB Primary Data), 1.9.6.1 (UniProt)
UniProt
Find proteins for P33937 (Escherichia coli (strain K12)) Explore P33937  Go to UniProtKB:  P33937

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 40 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2008-05-20 
Deposition Author(s): Minailiuc, O.M., Ekiel, I., Milad, M., Montreal-Kingston Bacterial Structural Genomics Initiative (BSGI)

Revision History  

• Version 1.0: 2008-05-20
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2022-03-16
  Changes: Data collection, Database references, Derived calculations
• Version 1.3: 2024-05-22
  Changes: Data collection