6MX1

The crystal structure of the regulatory domain of aspartokinase in the bifunctional aspartokinase/homoserine dehydrogenase 1 from Escherichia coli str. K-12 substr. MG1655

• PDB DOI: https://doi.org/10.2210/pdb6MX1/pdb

• Classification: TRANSFERASE, HYDROLASE
• Organism(s): Escherichia coli str. K-12 substr. MG1655
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2018-10-30 Released: 2018-11-07 
• Deposition Author(s): Tan, K., Endres, M., Welk, L., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID)
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.67 Å
• R-Value Free: 0.215 
• R-Value Work: 0.178 
• R-Value Observed: 0.180 

Starting Model: experimental

Literature

The crystal structure of the regulatory domain of aspartokinase in the bifunctional aspartokinase/homoserine dehydrogenase 1 from Escherichia coli str. K-12 substr. MG1655

Tan, K., Endres, M., Welk, L., Joachimiak, 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 and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 35.05 kDa 
• Atom Count: 2,385 
• Modelled Residue Count: 311 
• Deposited Residue Count: 326 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Bifunctional aspartokinase/homoserine dehydrogenase 1	A, B	163	Escherichia coli str. K-12 substr. MG1655	Mutation(s): 0  Gene Names: thrA, thrA1, thrA2, b0002, JW0001 EC: 2.7.2.4 (PDB Primary Data), 1.1.1.3 (PDB Primary Data)
UniProt
Find proteins for P00561 (Escherichia coli (strain K12)) Explore P00561  Go to UniProtKB:  P00561

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.67 Å
• R-Value Free: 0.215 
• R-Value Work: 0.178 
• R-Value Observed: 0.180 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 92.642	α = 90
b = 54.55	β = 99.3
c = 65.242	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling
HKL-3000	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2018-11-07 
Deposition Author(s): Tan, K., Endres, M., Welk, L., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID)

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	HHSN272201700060C

Revision History  

• Version 1.0: 2018-11-07
  Type: Initial release
  
• Version 1.1: 2019-12-18
  Changes: Author supporting evidence
• Version 1.2: 2023-10-11
  Changes: Data collection, Database references, Refinement description