7WJG | pdb_00007wjg

Streptococcus mutans BusR transcriptional factor

PDB DOI: https://doi.org/10.2210/pdb7WJG/pdb

Classification: TRANSCRIPTION
Organism(s): Streptococcus mutans UA159
Expression System: Escherichia coli BL21
Mutation(s): No

Deposited: 2022-01-06 Released: 2023-01-11
Deposition Author(s): Li, X., Liu, N.
Funding Organization(s): National Natural Science Foundation of China (NSFC)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.42 Å
R-Value Free:
0.227 (Depositor), 0.230 (DCC)
R-Value Work:
0.188 (Depositor), 0.190 (DCC)
R-Value Observed:
0.191 (Depositor)

wwPDB Validation 3D Report Full Report

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

Literature

BusR is a bifunctional transcription factor coordinating both osmotic response and amino sugar metabolism in Streptococcus mutans.

Li, X., Liu, N., Gao, K., Gu, D.M., Cui, Z., Zhang, K., Xu, S., Gu, L.

(2026) J Mol Biology

DOI: https://doi.org/10.1016/j.jmb.2026.169640

Macromolecule Content

Total Structure Weight: 46.89 kDa
Atom Count: 3,365
Modeled Residue Count: 397
Deposited Residue Count: 412
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Putative transcriptional regulator (GntR family)	A, B	206	Streptococcus mutans UA159	Mutation(s): 0 Gene Names: SMU_1064c
UniProt
Find proteins for Q8DU83 (Streptococcus mutans serotype c (strain ATCC 700610 / UA159)) Explore Q8DU83 Go to UniProtKB: Q8DU83
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	Q8DU83
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
CIT Query on CIT Download Ideal Coordinates CCD File SDF format, chain C [auth A] MOL2 format, chain C [auth A] mmCIF format, chain C [auth A]	C [auth A]	CITRIC ACID C₆ H₈ O₇ KRKNYBCHXYNGOX-UHFFFAOYSA-N		Interactions Focus chain C [auth A] Interactions & Density Focus chain C [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.42 Å
R-Value Free: 0.227 (Depositor), 0.230 (DCC)
R-Value Work: 0.188 (Depositor), 0.190 (DCC)
R-Value Observed: 0.191 (Depositor)

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 158.847	α = 90
b = 72.944	β = 94.822
c = 56.716	γ = 90

Software Package:

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

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Released Date: 2023-01-11

Deposition Author(s):

Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	31970043

Revision History (Full details and data files)

Version 1.0: 2023-01-11
Type: Initial release
Version 1.1: 2024-05-29
Changes: Data collection
Version 1.2: 2026-01-21
Changes: Database references, Structure summary

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.