6JYI

Crystal structure of the PadR-like transcriptional regulator BC1756 from Bacillus cereus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.92 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.209 

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This is version 1.1 of the entry. See complete history


Literature

Structural and DNA-binding studies of the PadR-like transcriptional regulator BC1756 from Bacillus cereus.

Kim, T.H.Park, S.C.Lee, K.C.Song, W.S.Yoon, S.I.

(2019) Biochem Biophys Res Commun 515: 607-613

  • DOI: 10.1016/j.bbrc.2019.05.141
  • Primary Citation of Related Structures:  
    6JYI

  • PubMed Abstract: 
  • Transcription factors that belong to the PadR family play an essential role in the transcriptional regulation of diverse biological processes by recognizing their cognate palindromic DNA sequences. Bacillus cereus harbors a gene that encodes a PadR-like protein (bcPLP; BC1756) ...

    Transcription factors that belong to the PadR family play an essential role in the transcriptional regulation of diverse biological processes by recognizing their cognate palindromic DNA sequences. Bacillus cereus harbors a gene that encodes a PadR-like protein (bcPLP; BC1756). bcPLP has not been structurally characterized, and it remains unelucidated how bcPLP interacts with a specific DNA sequence to function as a transcription factor. To provide structural insights into DNA recognition by bcPLP, we performed a structural study and a DNA-binding analysis of bcPLP. The crystal structure of bcPLP was determined at 1.92 Å resolution. bcPLP consists of two domains, an N-terminal domain (NTD) and a C-terminal domain (CTD), and forms a homodimer mainly using the CTD. In the structure, bcPLP contains a highly positively charged elongated patch in the NTD that serves as a putative DNA-binding site. Indeed, an electrophoresis mobility shift assay and a fluorescence polarization assay showed that bcPLP specifically recognizes a palindromic DNA sequence upstream of the bcPLP-encoding region. Moreover, based on our mutagenesis and modeling studies, we demonstrate that bcPLP interacts with dsDNA primarily using the Y19, Y41, P64, and K66 residues in the NTD.


    Organizational Affiliation

    Division of Biomedical Convergence, College of Biomedical Science, Kangwon National University, Chuncheon, 24341, Republic of Korea. Electronic address: sungil@kangwon.ac.kr.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Transcriptional repressor PadRA, B185Bacillus cereus ATCC 14579Mutation(s): 0 
Gene Names: BC_1756
UniProt
Find proteins for Q81F45 (Bacillus cereus (strain ATCC 14579 / DSM 31 / JCM 2152 / NBRC 15305 / NCIMB 9373 / NRRL B-3711))
Explore Q81F45 
Go to UniProtKB:  Q81F45
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, BL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.92 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.209 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 60.682α = 90
b = 132.672β = 90
c = 49.249γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
AutoSolphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-06-26
    Type: Initial release
  • Version 1.1: 2019-07-10
    Changes: Data collection, Database references