Detection of drug binding to a target protein using EVV 2DIR spectroscopy
File(s)Supplementary Information v6.docx (2.23 MB)
Supporting information
Author(s)
Type
Journal Article
Abstract
We demonstrate that Electron-Vibration-Vibration Two Dimensional Infrared Spectroscopy (EVV 2DIR) can be used to detect the binding of a drug to a target protein active site. The EVV 2DIR spectrum of the FGFR1 Kinase target protein is found to have ~200 detectable crosspeaks in the spectral region 1250 - 1750cm-1/2600 - 3400cm-1, with an additional 63 caused by the addition of a drug, SU5402. Of these 63 new peaks, it is shown that only 6 are due to protein-drug interactions, with the other 57 being due to vibrational coupling within the drug itself. Quantum mechanical calculations employing density functional theory are used to support assignment of the 6 binding-dependent peaks, with one being assigned to a known interaction between the drug and a backbone carbonyl group which forms part of the binding site. None of the 57 intramolecular coupling peaks associated with the drug molecule change substantially in either intensity or frequency when the drug binds to the target protein. This strongly suggests that the structure of the drug in the target binding site, is essentially identical to that when it is not bound.
Date Issued
2019-05-02
Date Acceptance
2019-03-08
Citation
Journal of Physical Chemistry B, 2019, 123 (17), pp.3598-3606
ISSN
1520-5207
Publisher
American Chemical Society
Start Page
3598
End Page
3606
Journal / Book Title
Journal of Physical Chemistry B
Volume
123
Issue
17
Copyright Statement
© 2019 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Physical Chemistry B, after peer review and technical editing by the publisher. To access the final edited and published work see https://dx.doi.org/10.1021/acs.jpcb.9b00501
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (E
Engineering & Physical Science Research Council (E
Identifier
https://pubs.acs.org/doi/10.1021/acs.jpcb.9b00501
Grant Number
GR/M65205
EP/C530187/1
EP/C54269X/1
EP/I017887/1
EP/R511547/1
Subjects
Science & Technology
Physical Sciences
Chemistry, Physical
Chemistry
2-DIMENSIONAL INFRARED-SPECTROSCOPY
NMR
IDENTIFICATION
QUANTIFICATION
COMPLEXES
DISCOVERY
GEOMETRY
BIOLOGY
DOMAIN
03 Chemical Sciences
09 Engineering
02 Physical Sciences
Publication Status
Published
Date Publish Online
2019-03-08