7S7U

Crystal structure of iNicSnFR3a Fluorescent Nicotine Sensor with nicotine bound

• PDB DOI: https://doi.org/10.2210/pdb7S7U/pdb

• Classification: FLUORESCENT PROTEIN
• Organism(s): Thermoanaerobacter sp. X513
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2021-09-17 Released: 2021-10-13 
• Deposition Author(s): Fan, C., Shivange, A.V., Looger, L.L., Lester, H.A., Rees, D.C.
• Funding Organization(s): Howard Hughes Medical Institute (HHMI), National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA), Tobacco-Related Disease Research Program (TRDRP)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.95 Å
• R-Value Free: 0.231 
• R-Value Work: 0.184 
• R-Value Observed: 0.186 

Starting Model: experimental

Literature

Correction: Fluorescence activation mechanism and imaging of drug permeation with new sensors for smoking-cessation ligands.

Nichols, A.L., Blumenfeld, Z., Fan, C., Luebbert, L., Blom, A.E.M., Cohen, B.N., Marvin, J.S., Borden, P.M., Kim, C.H., Muthusamy, A.K., Shivange, A.V., Knox, H.J., Campello, H.R., Wang, J.H., Dougherty, D.A., Looger, L.L., Gallagher, T., Rees, D.C., Lester, H.A.

(2022) Elife 11

• PubMed: 36520038 
• DOI: https://doi.org/10.7554/eLife.85479
• Primary Citation of Related Structures:  
  7S7T, 7S7U, 7S7V

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 60.33 kDa 
• Atom Count: 4,068 
• Modelled Residue Count: 512 
• Deposited Residue Count: 537 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
iNicSnFR 3.0 Fluorescent Nicotine Sensor	A	537	Thermoanaerobacter sp. X513	Mutation(s): 0

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CRO	A	L-PEPTIDE LINKING	C15 H17 N3 O5		THR, TYR, GLY

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.95 Å
• R-Value Free: 0.231 
• R-Value Work: 0.184 
• R-Value Observed: 0.186 
• Space Group: P 6₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 192.282	α = 90
b = 192.282	β = 90
c = 49.66	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
Aimless	data scaling
PHASER	phasing
Blu-Ice	data collection

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2021-10-13 
Deposition Author(s): Fan, C., Shivange, A.V., Looger, L.L., Lester, H.A., Rees, D.C.

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Funding Organization	Location	Grant Number
Howard Hughes Medical Institute (HHMI)	United States	--
National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA)	United States	DA037161
National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA)	United States	DA043829
National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA)	United States	GM123582
Tobacco-Related Disease Research Program (TRDRP)	United States	23XT-0007
Tobacco-Related Disease Research Program (TRDRP)	United States	27IP-0057

Revision History  

• Version 1.0: 2021-10-13
  Type: Initial release
  
• Version 1.1: 2021-11-03
  Changes: Structure summary
• Version 1.2: 2022-04-27
  Changes: Database references
• Version 1.3: 2023-02-08
  Changes: Database references
• Version 1.4: 2023-10-25
  Changes: Data collection, Refinement description
• Version 1.5: 2023-11-15
  Changes: Data collection
• Version 1.6: 2024-10-16
  Changes: Structure summary