7S7X

Crystal structure of iCytSnFR Cytisine Sensor precursor binding protein with varenicline bound

• PDB DOI: https://doi.org/10.2210/pdb7S7X/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., Nichols, N.L., Luebbert, L., 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: 1.70 Å
• R-Value Free: 0.208 
• R-Value Work: 0.170 
• R-Value Observed: 0.171 

Literature

Structure, Function, and Application of Bacterial ABC Transporters

Fan, C.

(2020) Ph D Thesis,california Institute Of Technology 

• DOI: https://doi.org/10.7907/5t65-0047

Biological Assembly 1  

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

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

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Biological Assembly 3  

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

Biological assembly 3 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 100.67 kDa 
• Atom Count: 7,627 
• Modelled Residue Count: 834 
• Deposited Residue Count: 879 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
iNicSnFR 4.0 Fluorescent Nicotine Sensor precursor binding protein	A, B, C	293	Thermoanaerobacter sp. X513	Mutation(s): 0

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
QMR (Subject of Investigation/LOI)	D [auth A], F [auth B], I [auth C]	VARENICLINE C13 H13 N3 JQSHBVHOMNKWFT-DTORHVGOSA-N
NHE	E [auth A], G [auth B], J [auth C]	2-[N-CYCLOHEXYLAMINO]ETHANE SULFONIC ACID C8 H17 N O3 S MKWKNSIESPFAQN-UHFFFAOYSA-N
PEG	H [auth B]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.208 
• R-Value Work: 0.170 
• R-Value Observed: 0.171 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 64.471	α = 90
b = 99.91	β = 90
c = 135.919	γ = 90

Software Package:

Software Name	Purpose
PDB_EXTRACT	data extraction
PHENIX	refinement
PHASER	phasing
Aimless	data scaling
XDS	data reduction

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2021-10-13 
Deposition Author(s): Fan, C., Nichols, N.L., Luebbert, L., 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: 2023-10-18
  Changes: Data collection, Refinement description