"Nucleosides" Natural Recordings by Native Speakers
Nucleosides are a class of molecules that are composed of a sugar molecule attached to a nitrogenous base. They are the building blocks of nucleic acids, such as DNA and RNA, and play a crucial role in the structure and function of these molecules. Nucleosides are typically composed of a five-carbon sugar molecule, such as ribose or deoxyribose, attached to a nitrogenous base, such as adenine, guanine, cytosine, or uracil. Nucleosides are different from nucleotides, which are composed of a nucleoside plus a phosphate group.
Nucleoplasm refers to the gel-like substance found within the nucleus of a eukaryotic cell. It is a type of cellular cytoplasm that fills the nucleus and surrounds the nucleolus, where ribosomal RNA synthesis takes place. The nucleoplasm contains chromatin, which is the complex of DNA and proteins that make up the chromosomes, and plays a crucial role in maintaining the structure and function of the nucleus.
Nucleoplasmic refers to the fluid substance found within the nucleus of a cell, which surrounds and contains the chromosomes. It is a component of the nuclear compartment and plays a role in maintaining the structural integrity and proper functioning of the nucleus.
Nucleoplasty is a minimally invasive surgical procedure used to treat discogenic pain in the spine. It involves the removal of the damaged or painful nucleus pulposus, which is the soft, gel-like center of an intervertebral disc. A device called a nucleotome is inserted through a small incision in the back and used to break up and remove the nucleus pulposus. This can help to relieve pressure on nearby nerve roots and reduce pain and inflammation in the affected area.
Nucleoporins are a group of proteins that form a mesh-like structure, known as the nuclear pore complex, which allows for the transport of molecules, such as proteins and RNAs, between the nucleus and the cytoplasm of eukaryotic cells. Nucleoporins play a crucial role in regulating the exchange of materials between the nucleus and the cytoplasm, and are essential for maintaining the proper function of the cell.
Nucleoproteins are complexes of proteins and nucleic acids, such as DNA or RNA, found in the cell nucleus or the cytoplasm. They are important in many cellular processes, including gene regulation, chromosome structure, and DNA replication.
A nucleoside is a molecule consisting of a sugar molecule attached to a nitrogenous base. It is a component of nucleic acids, such as DNA and RNA, where it forms the building blocks of these biological molecules.
Nucleosomal adj. <br><br>Relating to a nucleosome, a structure consisting of a segment of DNA wrapped around a core of histone proteins. In chromatin, nucleosomes are the basic units of DNA packaging, and they play a crucial role in the regulation of gene expression. The term is often used to describe the structure and function of chromatin at the molecular level.
Nucleosomes are the basic structural units of chromatin, the material that makes up the chromosomes within the nucleus of eukaryotic cells. A nucleosome consists of a segment of DNA wrapped around a core of eight histone proteins: two copies each of histones H2A, H2B, H3, and H4. The histone core forms a disc-like structure, and the DNA is wrapped around it in a manner similar to a spool of thread, resulting in a repeating structure called a nucleosome repeat. The nucleosomes are linked together by stretches of DNA, forming the chromatin fiber, which is highly compacted to fit inside the nucleus.
Nucleotidase is a type of enzyme that catalyzes the hydrolysis of nucleotides, such as nucleic acid monomers, into nucleosides and phosphate groups. In other words, it breaks down nucleotides into simpler components, playing a crucial role in the metabolism of nucleic acids.
Relating to or involving nucleotides, which are the building blocks of nucleic acids such as DNA and RNA. A nucleotidic acid is a molecule composed of nucleotides.