4NXG

Crystal structure of iLOV-I486z(2LT) at pH 9.0


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.09 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Significant Expansion of Fluorescent Protein Sensing Ability through the Genetic Incorporation of Superior Photo-Induced Electron-Transfer Quenchers

Liu, X.Jiang, L.Li, J.Wang, L.Yu, Y.Zhou, Q.Lv, X.Gong, W.Lu, Y.Wang, J.

(2014) J.Am.Chem.Soc. --: --

  • DOI: 10.1021/ja505219r
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Photo-induced electron transfer (PET) is ubiquitous for photosynthesis and fluorescent sensor design. However, genetically coded PET sensors are underdeveloped, due to the lack of methods to site-specifically install PET probes on proteins. Here we d ...

    Photo-induced electron transfer (PET) is ubiquitous for photosynthesis and fluorescent sensor design. However, genetically coded PET sensors are underdeveloped, due to the lack of methods to site-specifically install PET probes on proteins. Here we describe a family of acid and Mn(III) turn-on fluorescent protein (FP) sensors, named iLovU, based on PET and the genetic incorporation of superior PET quenchers in the fluorescent flavoprotein iLov. Using the iLovU PET sensors, we monitored the cytoplasmic acidification process, and achieved Mn(III) fluorescence sensing for the first time. The iLovU sensors should be applicable for studying pH changes in living cells, monitoring biogentic Mn(III) in the environment, and screening for efficient manganese peroxidase, which is highly desirable for lignin degradation and biomass conversion. Our work establishes a platform for many more protein PET sensors, facilitates the de novo design of metalloenzymes harboring redox active residues, and expands our ability to probe protein conformational dynamics.


    Organizational Affiliation

    Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences , Chaoyang District, Beijing, 100101, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Phototropin-2
A, B
118Arabidopsis thalianaMutation(s): 6 
Gene Names: PHOT2 (CAV1, KIN7, NPL1)
EC: 2.7.11.1
Find proteins for P93025 (Arabidopsis thaliana)
Go to UniProtKB:  P93025
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FMN
Query on FMN

Download SDF File 
Download CCD File 
A, B
FLAVIN MONONUCLEOTIDE
RIBOFLAVIN MONOPHOSPHATE
C17 H21 N4 O9 P
FVTCRASFADXXNN-SCRDCRAPSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
2LT
Query on 2LT
A, B
L-PEPTIDE LINKINGC9 H9 Cl2 N O3TYR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.09 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.198 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 37.397α = 90.00
b = 60.711β = 103.42
c = 49.279γ = 90.00
Software Package:
Software NamePurpose
MLPHAREphasing
HKL-2000data scaling
HKL-2000data collection
PHENIXrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2013-12-09 
  • Released Date: 2014-09-24 
  • Deposition Author(s): Wang, J., Liu, X., Li, J.

Revision History 

  • Version 1.0: 2014-09-24
    Type: Initial release