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Does a nucleotide use a protein?
No nucleotides are not proteins. Nucleotides are composed of nucleosides that are linked to phosphate groups and are the subunits of DNA and RNA.
What enzyme breaks down nucleotides?
Nucleotides are broken down by the enzyme nucleotidase, which hydrolyzes nucleotides into their constituent components: nucleosides and phosphate groups. Subsequently, nucleosides can be further broken down by nucleoside phosphorylases and nucleoside hydrolases into nitrogenous bases and sugars. This process is essential for nucleotide recycling and cellular metabolism.
What is the source of the four dXTPs required for DNA synthesis?
The four deoxynucleotide triphosphates (dXTPs) required for DNA synthesis—deoxyadenosine triphosphate (dATP), deoxycytidine triphosphate (dCTP), deoxyguanosine triphosphate (dGTP), and deoxy thymidine triphosphate (dTTP)—are synthesized from their respective nucleosides through phosphorylation. These nucleosides are derived from the metabolism of nucleic acids and nucleotides in the cell, with ATP serving as the primary energy source for their phosphorylation. Additionally, the salvage pathways can recycle nucleotides from the breakdown of nucleic acids.
How do nucleotides differ?
Nucleotides are a type of molecule composed by a nitrogenated base (iether purine or pyrimidin) bounded to a pentose (either ribose or deoxyribose) which is bounded to a chain of 1 to 3 inorganic phosphates (mono, di and triphosphates). They are different from nucleosides in the pressence of phosphate, nucleosides lack phosphates, nucleotides posses phosphates.
Which enzyme that is located in the small intestine and pancreas has nucleotides as a substrate?
The enzyme that has nucleotides as a substrate and is located in the small intestine and pancreas is called nucleotidase. Nucleotidases hydrolyze nucleotides into nucleosides and phosphate groups, playing a crucial role in the digestion and metabolism of nucleic acids. This enzymatic action aids in the further breakdown of nucleic acids from dietary sources, facilitating their absorption in the intestine.
Constituents of DNA?
DNA is made up of four types of nucleotides: adenine (A), thymine (T), cytosine (C), and guanine (G). These nucleotides are arranged in a double helix structure, with A pairing with T and C pairing with G. DNA also contains phosphate groups and deoxyribose sugar molecules.
What is the two nucleosides sugars?
Ribose2-Deoxyribose
Do nucleosides contain phosphate?
No, nucleosides do not contain phosphate. Nucleosides are composed of a nitrogenous base (such as adenine or guanine) attached to a sugar molecule (ribose or deoxyribose), but they do not include a phosphate group.
Is a nucleotide a monomer?
Yes, a nucleotide is considered a monomer. It is the building block of nucleic acids like DNA and RNA, consisting of a phosphate group, a sugar molecule, and a nitrogenous base. Multiple nucleotides can link together to form a polymer chain.
Where is Burial site for sir Alexander robertus todd?
Alexander R. Todd, Baron Todd was a British Biochemist who won the Nobel Prize in Chemistry for his work on nucleotides, nucleosides and their co-enzymes. He died at the age of 89 in 1997, and is buried in Cambridge, England, where he made his home.
What molecules are utilized by ribosomes?
A ribosome is made of two parts: an large protein sub unit and a smaller rRNA sub unit. Proteins are strings of amino acids whereas RNA is a string of ribose-based nucleotides.
What types of molecules are in the body?
amino acids, nucleosides, and hormones
