Year of Award

2013

Document Type

Professional Paper

Degree Type

Master of Arts (MA)

Degree Name

Chemistry (Inorganic Option)

Department or School/College

Department of Chemistry

Committee Chair

Edward Rosenberg

Commitee Members

J. B. Alexander Ross, Nicholas R. Natale

Keywords

DNA, Labelling, Osmium, Platinum, Sequencing, TEM, Cluster, Electrom Microscopy

Abstract

The goal of this project was to explore the possibility of high throughput DNA sequencing using high-resolution electron microscopy. This approach was recently made feasible by development of a DNA threading technique that allows the imaging of straight, single stranded DNA; and by the development of atom-by-atom analysis with Transmission Electron Microscopy (TEM). In an attempt to better understand the types of interactions that can occur between water-soluble versions of complex and DNA we have synthesized the series of single metal and tetrametallic compounds. In order to demonstrate proof of concept for the technique of visualizing metal complex bound on DNA with TEM we studied the reaction of the complexes [Pt(en)Cl(NH2R)]+NO3- (en = ethylene diamine, Pt, Z = 78) with dGMP. We report here the successful visualization of the Pt atoms in the complex [Pt(en)Cl(NH2R)]+NO3- (R= C8H9NO2 (benzo[d][1,3]dioxol-5ylmethanamine, also known as piperonylamine) bound to DNA by TEM as well as kinetic study of a series of related complexes reacting with dGMP. The synthesis and dGMP binding of a Pt-triosmium conjugate is also reported.

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© Copyright 2013 Rakesh Kumar