3BRQ

Crystal structure of the Escherichia coli transcriptional repressor ascG

PDB DOI: https://doi.org/10.2210/pdb3BRQ/pdb

Classification: TRANSCRIPTION REGULATOR
Organism(s): Escherichia coli K-12
Expression System: Escherichia coli BL21(DE3)
Mutation(s): No

Deposited: 2007-12-21 Released: 2008-01-22
Deposition Author(s): Singer, A.U., Kagan, O., Evdokimova, E., Osipiuk, J., Joachimiak, A., Edwards, A.M., Savchenko, A., Midwest Center for Structural Genomics (MCSG)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.00 Å
R-Value Free: 0.249
R-Value Work: 0.186
R-Value Observed: 0.189

wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.2 of the entry. See complete history.

Macromolecule Content

Total Structure Weight: 66.22 kDa
Atom Count: 4,606
Modelled Residue Count: 548
Deposited Residue Count: 592
Unique protein chains: 1

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HTH-type transcriptional regulator ascG	A, B	296	Escherichia coli K-12	Mutation(s): 0 Gene Names: ascG, b2714, JW5434
UniProt
Find proteins for P24242 (Escherichia coli (strain K12)) Explore P24242 Go to UniProtKB: P24242
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P24242
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
FRU Query on FRU Download Ideal Coordinates CCD File SDF format, chain C [auth A] MOL2 format, chain C [auth A]	C [auth A]	beta-D-fructofuranose C₆ H₁₂ O₆ RFSUNEUAIZKAJO-ARQDHWQXSA-N		Interactions Focus chain C [auth A] Interactions & Density Focus chain C [auth A]
SO4 Query on SO4 Download Ideal Coordinates CCD File SDF format, chain D [auth A] SDF format, chain F [auth B] MOL2 format, chain D [auth A] MOL2 format, chain F [auth B]	D [auth A], F [auth B]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Interactions Focus chain D [auth A] Focus chain F [auth B] Interactions & Density Focus chain D [auth A] Focus chain F [auth B]
NA Query on NA Download Ideal Coordinates CCD File SDF format, chain E [auth B] MOL2 format, chain E [auth B]	E [auth B]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N		Interactions Focus chain E [auth B] Interactions & Density Focus chain E [auth B]

Modified Residues 1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE Query on MSE	A, B	L-PEPTIDE LINKING	C₅ H₁₁ N O₂ Se		MET

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.00 Å
R-Value Free: 0.249
R-Value Work: 0.186
R-Value Observed: 0.189
Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 62.229	α = 90
b = 65.446	β = 90
c = 130.706	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
ADSC	data collection
HKL-2000	data reduction
HKL-2000	data scaling
HKL-3000	phasing

Structure Validation

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Ligand Structure Quality Assessment

Entry History

Deposition Data

Released Date: 2008-01-22

Deposition Author(s):

Midwest Center for Structural Genomics (MCSG)

Revision History (Full details and data files)

Version 1.0: 2008-01-22
Type: Initial release
Version 1.1: 2011-07-13
Changes: Source and taxonomy, Version format compliance
Version 1.2: 2020-07-29
Type: Remediation
Reason: Carbohydrate remediation
Changes: Data collection, Database references, Derived calculations, Structure summary

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3BRQ

Crystal structure of the Escherichia coli transcriptional repressor ascG

Entity ID: 1

UniProt

Entity Groups

Sequence Annotations

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Experimental Data

Structure Validation

Ligand Structure Quality Assessment

Deposition Data

Revision History (Full details and data files)