9GN3 | pdb_00009gn3

The 3D structure of MsrR from Streptococcus pneumoniae

• PDB DOI: https://doi.org/10.2210/pdb9GN3/pdb

• Classification: STRUCTURAL PROTEIN
• Organism(s): Streptococcus pneumoniae
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2024-08-30 Released: 2025-02-26 
• Deposition Author(s): Moche, M., Sala, B.M., Sandalova, T., Achour, A.
• Funding Organization(s): Swedish Research Council

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free: 
  0.259 (Depositor), 0.264 (DCC) 
• R-Value Work: 
  0.204 (Depositor), 0.211 (DCC) 
• R-Value Observed: 
  0.207 (Depositor) 

Literature

Crystallographic and NMR Study of Streptococcus pneumonia LCP Protein PsrSp Indicate the Importance of Dynamics in Four Long Loops for Ligand Specificity

Sandalova, T., Sala, B.M., Moche, M., Ljunggren, H.G., Alici, E., Henriques-Normark, B., Agback, T., Lesovoy, D., Agback, P., Achour, A.

(2024) Crystals (Basel) 

• DOI: https://doi.org/10.3390/cryst14121094

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 102.16 kDa 
• Atom Count: 7,158 
• Modeled Residue Count: 888 
• Deposited Residue Count: 921 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Regulatory protein MsrR	A, B, C	307	Streptococcus pneumoniae	Mutation(s): 0  Gene Names: spr1226
UniProt
Find proteins for A0A0H2ZMX3 (Streptococcus pneumoniae serotype 2 (strain D39 / NCTC 7466)) Explore A0A0H2ZMX3  Go to UniProtKB:  A0A0H2ZMX3

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free:  0.259 (Depositor), 0.264 (DCC) 
• R-Value Work:  0.204 (Depositor), 0.211 (DCC) 
• R-Value Observed: 0.207 (Depositor) 

Space Group: P 3 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 130.631	α = 90
b = 130.631	β = 90
c = 100.582	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
STARANISO	data scaling
XDS	data reduction
MOLREP	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-02-26 
Deposition Author(s): Moche, M., Sala, B.M., Sandalova, T., Achour, A.

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Funding Organization	Location	Grant Number
Swedish Research Council	Sweden	2018-05798_VR

Revision History  

• Version 1.0: 2025-02-26
  Type: Initial release
  
• Version 1.1: 2025-09-10
  Changes: Database references