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EPR and NMR spectroscopy of spin-labeled proteins Finiguerra, M.G.

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EPR and NMR spectroscopy of spin-labeled proteins

Finiguerra, M.G.

Citation

Finiguerra, M. G. (2011, September 28). EPR and NMR spectroscopy of spin- labeled proteins. Retrieved from https://hdl.handle.net/1887/17881

Version: Corrected Publisher’s Version

License: Licence agreement concerning inclusion of doctoral thesis in the Institutional Repository of the University of Leiden Downloaded from: https://hdl.handle.net/1887/17881

Note: To cite this publication please use the final published version (if

applicable).

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EPR and NMR Spectroscopy of Spin-Labeled Proteins

Proefschrift

ter verkrijging van

de graad van Doctor aan de Universiteit Leiden, op gezag van Rector Magnificus prof. mr. P.F. van der Heijden,

volgens besluit van het College voor Promoties te verdedigen op

op woensdag 28 september 2011 klokke 13:45 uur

door

Michelina Giuseppina Finiguerra

geboren te Foggia, Italië in 1967

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Promotiecommissie

Promotores: Prof. dr. E. J. J. Groenen Prof. dr. M. Ubbink

Co-promotor: Dr. M. Huber

Overige leden: Prof. dr. J. Brouwer Prof. dr. G. W. Canters Prof. dr. J. M. van Ruitenbeek

Prof. dr. H.-J. Steinhoff (Universität Osnabrück)

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A mia madre e mio padre

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Cover image:

A detail of the spin-labeled Cyt f-Pc complex, created using the PyMOL Molecular Graphics System, Version 0.99rc6, Schrödinger, LLC

Printed by Ipskamp Drukkers, Enschede

ISBN: 978-94-6191-015-8

2011, Michelina Finiguerra

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Abbreviations 6

Chapter I 7

Introduction

Chapter II 23

High-field (275 GHz) spin-label EPR for high-resolution polarity determination in proteins

Chapter III 37

Accurate long-range distance measurements in a doubly spin-labeled protein by a four- pulse, double electron-electron resonance method

Chapter IV 53

Paramagnetic NMR using spin-labeled proteins to study the structure of the complex between cytochrome f and plastocyanin

Concluding Remarks 89

Appendices 97

Summary 103

Samenvatting 106

List of publications 109

Biography 110

Acknowledgments 111

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6

Abbreviations

Amp ampicillin

cam chloamphenicol

CSPs chemical shift perturbations

Cyt f soluble part of the transmembrane cytochrome f

CW continuous wave

DEER double electron-electron resonance

DDT dithiothreitol

EDTA N,N,N’,N’-ethylenediaminetetraacetic acid disodium salt

EPR electron paramagnetic resonance

FPLC fast protein liquid chromatography

FRET Förster resonance energy transfer

HSQC heteronuclear single-quantum coherence

IPTG isopropyl-β-D-thiogalactopyranoside

LB Luria – Bertani medium

MTS (1-acetyl-2,2,5,5-tetramethyl-3-pyrroline-3-methyl)-methanethiosulfonate

MTSL (1-oxyl-2,2,5,5-tetramethyl-3-pyrroline-3-methyl)-methanethiosulfonate

NMR nuclear magnetic resonance

Pc Plastocyanin

PCSs pseudocontact shifts

PRE paramagnetic relaxation enhancement

rmsd root-mean-square deviation

RT room temperature

SDSL site-directed spin labelling

SL spin label

Tris-HCl tris(hydroxymethyl)aminomethane hydrochloride

wt wild type

Zn-Pc Zinc Pc

τc rotational correlation time

15N-Pc 15N-labeled Pc

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