7DOA | pdb_00007doa

Crystal structure of Catabolite repressor acivator from E. coli in complex with HEPES

• PDB DOI: https://doi.org/10.2210/pdb7DOA/pdb

• Classification: GENE REGULATION
• Organism(s): Escherichia coli 536
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2020-12-13 Released: 2021-12-22 
• Deposition Author(s): Neetu, N., Katiki, M., Kumar, P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 
  0.284 (Depositor), 0.284 (DCC) 
• R-Value Work: 
  0.217 (Depositor), 0.217 (DCC) 
• R-Value Observed: 
  0.221 (Depositor) 

Starting Model: experimental

Literature

Crystal structure of Catabolite repressor acivator from E. coli in complex with HEPES

Neetu, N., Katiki, M., Kumar, P.

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.

Biological Assembly Evidence: native gel electrophoresis

Macromolecule Content 

• Total Structure Weight: 82.43 kDa 
• Atom Count: 4,570 
• Modeled Residue Count: 548 
• Deposited Residue Count: 714 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Catabolite repressor/activator	A, B	357	Escherichia coli 536	Mutation(s): 0  Gene Names: ECP_0082
UniProt
Find proteins for A0A454A0X5 (Escherichia coli O6:K15:H31 (strain 536 / UPEC)) Explore A0A454A0X5  Go to UniProtKB:  A0A454A0X5

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EPE (Subject of Investigation/LOI)	C [auth A], D [auth B], E [auth B]	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID C8 H18 N2 O4 S JKMHFZQWWAIEOD-UHFFFAOYSA-N
GOL	F [auth B]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free:  0.284 (Depositor), 0.284 (DCC) 
• R-Value Work:  0.217 (Depositor), 0.217 (DCC) 
• R-Value Observed: 0.221 (Depositor) 

Space Group: P 2₁ 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 123.932	α = 90
b = 43.341	β = 90
c = 108.908	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
SCALEPACK	data scaling
MOLREP	phasing
XDS	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2021-12-22 
Deposition Author(s): Neetu, N., Katiki, M., Kumar, P.

Revision History  

• Version 1.0: 2021-12-22
  Type: Initial release
  
• Version 1.1: 2023-11-29
  Changes: Data collection, Refinement description