1NXV

MicArec pH 4.2

• PDB DOI: https://doi.org/10.2210/pdb1NXV/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Streptococcus pneumoniae TIGR4
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2003-02-11 Released: 2004-02-17 
• Deposition Author(s): Bent, C.J., Isaacs, N.W., Mitchell, T.J., Riboldi-Tunnicliffe, A.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.269 
• R-Value Work: 0.202 
• R-Value Observed: 0.208 

Literature

MicArec pH 4.2

Bent, C.J., Isaacs, N.W., Mitchell, T.J., Riboldi-Tunnicliffe, A.

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.

Macromolecule Content

• Total Structure Weight: 13.6 kDa 
• Atom Count: 1,003 
• Modelled Residue Count: 118 
• Deposited Residue Count: 120 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DNA-binding response regulator	A	120	Streptococcus pneumoniae TIGR4	Mutation(s): 0
UniProt
Find proteins for A0A0H2UQ68 (Streptococcus pneumoniae serotype 4 (strain ATCC BAA-334 / TIGR4)) Explore A0A0H2UQ68  Go to UniProtKB:  A0A0H2UQ68

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.269 
• R-Value Work: 0.202 
• R-Value Observed: 0.208 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 78.689	α = 90
b = 92.571	β = 90
c = 37.159	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-02-17 
Deposition Author(s): Bent, C.J., Isaacs, N.W., Mitchell, T.J., Riboldi-Tunnicliffe, A.

Revision History  

• Version 1.0: 2004-02-17
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.3: 2023-08-16
  Changes: Data collection, Database references, Refinement description