desoxyguanosine

Desoxyguanosine, also known as deoxyguanosine, is a nucleoside that plays a crucial role in molecular biology. It is a derivative of guanine, one of the four nucleobases found in DNA. Specifically, desoxyguanosine is composed of guanine linked to a deoxyribose sugar molecule. This deoxyribose sugar is a five-carbon sugar that lacks an oxygen atom at the 2' position, distinguishing it from the ribose sugar found in RNA.

In the context of DNA, desoxyguanosine pairs with cytosine through hydrogen bonds, forming one of the fundamental base pairs that hold the two strands of the DNA double helix together. The sequence of these base pairs along the DNA molecule encodes the genetic information of an organism. Desoxyguanosine is therefore a fundamental building block of deoxyribonucleic acid (DNA), the molecule that carries genetic instructions for the development, functioning, growth, and reproduction of all known organisms and many viruses. It is one of the four deoxyribonucleosides that make up DNA, alongside desoxyadenosine, desoxycytidine, and desoxythymidine.