3BR3

Crystal Structure of the Complex of Ethidium Bound to QacR(E90Q), a Mutant of a Multidrug Binding Transcriptional Repressor

PDB DOI: https://doi.org/10.2210/pdb3BR3/pdb

Classification: TRANSCRIPTION
Organism(s): Staphylococcus aureus
Expression System: Escherichia coli
Mutation(s): Yes

Deposited: 2007-12-20 Released: 2008-12-23
Deposition Author(s): Brooks, B.E.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.80 Å
R-Value Free: 0.293
R-Value Work: 0.218
R-Value Observed: 0.222

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.3 of the entry. See complete history.

Literature

Formal electrostatic interactions do not govern QacR-cation affinity

Brooks, B.E., Hardie, K.M., Brown, M.H., Skurray, R.A., Brennan, R.G.

To be published.

Macromolecule Content

Total Structure Weight: 46.96 kDa
Atom Count: 3,040
Modelled Residue Count: 368
Deposited Residue Count: 388
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 qacR	A [auth B], B [auth A]	194	Staphylococcus aureus	Mutation(s): 4 Gene Names: qacR
UniProt
Find proteins for P0A0N3 (Staphylococcus aureus (strain Mu50 / ATCC 700699)) Explore P0A0N3 Go to UniProtKB: P0A0N3
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P0A0N3
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
ET Query on ET Download Ideal Coordinates CCD File SDF format, chain H [auth A] MOL2 format, chain H [auth A] mmCIF format, chain H [auth A]	H [auth A]	ETHIDIUM C₂₁ H₂₀ N₃ QTANTQQOYSUMLC-UHFFFAOYSA-O		Interactions Focus chain H [auth A] Interactions & Density Focus chain H [auth A]
SO4 Query on SO4 Download Ideal Coordinates CCD File SDF format, chain C [auth B] SDF format, chain D [auth B] SDF format, chain E [auth B] SDF format, chain F [auth B] SDF format, chain G [auth B] SDF format, chain I [auth A] SDF format, chain J [auth A] SDF format, chain K [auth A] MOL2 format, chain C [auth B] MOL2 format, chain D [auth B] MOL2 format, chain E [auth B] MOL2 format, chain F [auth B] MOL2 format, chain G [auth B] MOL2 format, chain I [auth A] MOL2 format, chain J [auth A] MOL2 format, chain K [auth A] mmCIF format, chain C [auth B] mmCIF format, chain D [auth B] mmCIF format, chain E [auth B] mmCIF format, chain F [auth B] mmCIF format, chain G [auth B] mmCIF format, chain I [auth A] mmCIF format, chain J [auth A] mmCIF format, chain K [auth A]	C [auth B] D [auth B] E [auth B] F [auth B] G [auth B] C [auth B], D [auth B], E [auth B], F [auth B], G [auth B], I [auth A], J [auth A], K [auth A]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Interactions Focus chain C [auth B] Focus chain D [auth B] Focus chain E [auth B] Focus chain F [auth B] Focus chain G [auth B] Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth A] Interactions & Density Focus chain C [auth B] Focus chain D [auth B] Focus chain E [auth B] Focus chain F [auth B] Focus chain G [auth B] Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth A]