44MO | pdb_000044mo

VcFadRqm, a quadruple mutant (Y153A, K156E, L203F, L208F) of fatty acid metabolism regulator protein from Vibrio cholerae, in complex with DNA

PDB DOI: https://doi.org/10.2210/pdb44MO/pdb
Entry: 44MO supersedes: 8Y3Z

Classification: TRANSCRIPTION/DNA
Organism(s): Vibrio cholerae O395
Expression System: Escherichia coli 'BL21-Gold(DE3)pLysS AG
Mutation(s): Yes

Deposited: 2026-08-04 Released: 2026-09-16
Deposition Author(s): Tsui, W., Ma, J.B.
Funding Organization(s): National Natural Science Foundation of China (NSFC)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.50 Å
R-Value Free:
0.217 (Depositor), 0.216 (DCC)
R-Value Work:
0.198 (Depositor), 0.198 (DCC)
R-Value Observed:
0.199 (Depositor)

Starting Model: experimental
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This is version 1.0 of the entry. See complete history.

Literature

VcFadRqm, Genetically engineered mutants of Vibrio cholerae fadR, in Complex with DNA

Tsui, W., Ma, J.B.

To be published.

Macromolecule Content

Total Structure Weight: 83.09 kDa
Atom Count: 5,694
Modeled Residue Count: 604
Deposited Residue Count: 620
Unique protein chains: 1
Unique nucleic acid chains: 2

Macromolecules

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Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Fatty acid metabolism regulator protein	A, B	279	Vibrio cholerae O395	Mutation(s): 4 Gene Names: fadR, VC0395_A1490, VC395_2015
UniProt
Find proteins for A5F6Z2 (Vibrio cholerae serotype O1 (strain ATCC 39541 / Classical Ogawa 395 / O395)) Explore A5F6Z2 Go to UniProtKB: A5F6Z2
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	A5F6Z2
Sequence Annotations Expand
Reference Sequence

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Molecule	Chains	Length	Organism	Image
Entity ID: 2
DNA (31-MER)	C	31	Vibrio cholerae O395
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Reference Sequence

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Molecule	Chains	Length	Organism	Image
Entity ID: 3
DNA (31-MER)	D	31	Vibrio cholerae O395
Sequence Annotations Expand
Reference Sequence

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.50 Å
R-Value Free: 0.217 (Depositor), 0.216 (DCC)
R-Value Work: 0.198 (Depositor), 0.198 (DCC)
R-Value Observed: 0.199 (Depositor)

Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 99.303	α = 90
b = 99.303	β = 90
c = 225.826	γ = 90

Software Package:

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

Structure Validation

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Entry History

& Funding Information

Deposition Data

Released Date: 2026-09-16

Deposition Author(s):

This entry supersedes: 8Y3Z

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

Revision History (Full details and data files)

Version 1.0: 2026-09-16
Type: Initial release

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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.