4TOZ

MppA Periplasmic Murein Tripeptide Binding Protein, Unliganded Open Form

• PDB DOI: https://doi.org/10.2210/pdb4TOZ/pdb

• Classification: PEPTIDE BINDING PROTEIN
• Organism(s): Escherichia coli K-12
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2014-06-06 Released: 2015-06-10 
• Deposition Author(s): Jeffery, C.J., Bhatt, F.
• Funding Organization(s): American Heart Association

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 0.205 
• R-Value Work: 0.180 

Literature

Open Conformation of the E. coli Periplasmic Murein Tripeptide Binding Protein, MppA, at High Resolution

Bhatt, F., Patel, V., Jeffery, C.J.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 117.6 kDa 
• Atom Count: 9,803 
• Modelled Residue Count: 1,030 
• Deposited Residue Count: 1,046 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Periplasmic murein peptide-binding protein	A, B	523	Escherichia coli K-12	Mutation(s): 0  Gene Names: mppA, ynaH, b1329, JW1322
UniProt
Find proteins for P77348 (Escherichia coli (strain K12)) Explore P77348  Go to UniProtKB:  P77348

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
TRS	C [auth A]	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL C4 H12 N O3 LENZDBCJOHFCAS-UHFFFAOYSA-O

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 0.205 
• R-Value Work: 0.180 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 74.97	α = 90
b = 76.81	β = 91.58
c = 89.57	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
PDB_EXTRACT	data extraction
AMoRE	phasing
HKL-2000	data reduction
HKL-2000	data scaling
CNS	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2015-06-10 
Deposition Author(s): Jeffery, C.J., Bhatt, F.

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Funding Organization	Location	Grant Number
American Heart Association	United States	--

Revision History  

• Version 1.0: 2015-06-10
  Type: Initial release
  
• Version 1.1: 2023-09-27
  Changes: Data collection, Database references, Derived calculations, Refinement description, Source and taxonomy