Phosphodiester bond - Citizendia

Diagram of phosphodiester bonds between nucleotides

A phosphodiester bond is a group of strong covalent bonds between the phosphorus atom in a phosphate group and two other molecules over two ester bonds. Phosphorus, (ˈfɒsfərəs is the Chemical element that has the symbol P and Atomic number 15 A phosphate, an Inorganic chemical, is a salt of Phosphoric acid. In Chemistry, a molecule is defined as a sufficiently stable electrically neutral group of at least two Atoms in a definite arrangement held together by Esters are a class of Chemical compounds and Functional groups Esters consist of an inorganic or organic Acid in which at least Phosphodiester bonds are central to all life on Earth, as they make up the backbone of the strands of DNA. EARTH was a short-lived Japanese vocal trio which released 6 singles and 1 album between 2000 and 2001 Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known In DNA and RNA, the phosphodiester bond is the linkage between the 3' carbon atom and the 5' carbon of the sugar deoxyribose (in DNA) or ribose (in RNA). Ribonucleic acid ( RNA) is a Nucleic acid that consists of a long chain of Nucleotide units Carbon (kɑɹbən is a Chemical element with the symbol C and its Atomic number is 6 History See also Atomic theory, Atomism The concept that matter is composed of discrete units and cannot be divided into arbitrarily tiny Deoxyribose, also known as D-Deoxyribose and 2-deoxyribose, is an Aldopentose &mdash a Monosaccharide containing five Carbon Ribose (ɹˈaɪbəʊs ɹˈaɪbəɹʊs primarily seen as D-ribose, is an Aldopentose — a Monosaccharide containing five Carbon

The phosphate groups in the phosphodiester bond are negatively-charged. Because the phosphate groups have a pK_a near 0, they are negatively-charged at pH 7. For a general Chemical reaction \alpha A +\beta B. \rightleftharpoons \sigma S+\tau T. This repulsion forces the phosphates to take opposite sides of the DNA strands and is neutralized by proteins (histones), metal ions, and polyamines. In Biology, histones are the chief Protein components of Chromatin.

In order for the phosphodiester bond to be formed and the nucleotides to be joined, the tri-phosphate or di-phosphate forms of the nucleotide building blocks are broken apart to give off energy required to drive the enzyme-catalyzed reaction. Nucleotides are Organic compounds that consist of three joined structures a nitrogenous base a Sugar, and a Phosphate group Enzymes are Biomolecules that catalyze ( ie increase the rates of Chemical reactions Almost all enzymes are Proteins When a single phosphate or two phosphates known as pyrophosphates break away and catalyze the reaction, the phosphodiester bond is formed. In Chemistry, the Anion, the Salts and the Esters of Pyrophosphoric acid are called pyrophosphates.

Hydrolysis of phosphodiester bonds can be catalyzed by the action of phosphodiesterases which play an important role in repairing DNA sequences. A phosphodiesterase is any Enzyme that breaks a Phosphodiester bond.

In biological systems, the phosphodiester bond between two ribonucleotides can be broken by alkaline hydrolysis because of the free 2' hydroxyl group. A ribonucleotide is a Nucleotide in which a Purine or Pyrimidine base is linked to a Ribose Molecule. Hydrolysis is a Chemical reaction during which one or more water molecules are split into hydrogen and hydroxide ions which may go on to participate in further reactions Hydroxyl in Chemistry stands for a molecule consisting of an Oxygen atom and a Hydrogen atom connected by a Covalent bond.

Enzyme activity

A phosphodiesterase is an enzyme that catalyzes the hydrolysis of phosphodiester bonds, for instance a bond in a molecule of cyclic AMP or cyclic GMP. A phosphodiesterase is any Enzyme that breaks a Phosphodiester bond. Enzymes are Biomolecules that catalyze ( ie increase the rates of Chemical reactions Almost all enzymes are Proteins Catalysis is the process in which the rate of a Chemical reaction is increased by means of a Chemical substance known as a catalyst Hydrolysis is a Chemical reaction during which one or more water molecules are split into hydrogen and hydroxide ions which may go on to participate in further reactions Cyclic adenosine monophosphate ( cAMP, cyclic AMP or 3'-5'-cyclic Adenosine monophosphate) is a Second messenger that is important in many biological Cyclic guanosine monophosphate ( cGMP) is a Cyclic nucleotide derived from Guanosine triphosphate (GTP

An enzyme that plays an important role in the repair of oxidative DNA damage is the 3'-phosphodiesterase. Redox (shorthand for reduction-oxidation reaction describes all Chemical reactions in which atoms have their Oxidation number ( Oxidation state DNA repair refers to a collection of processes by which a cell identifies and corrects damage to the DNA molecules that encode its Genome.

During the replication of DNA, there is a hole between the phosphates in the backbone left by DNA polymerase I. DNA replication is the process of copying a double-stranded DNA molecule to form two double-stranded molecules DNA Polymerase I (or Pol I) is an Enzyme that participates in the process of DNA replication in Prokaryotes It is composed of 928 amino acids DNA ligase is able to form a phosphodiester bond between the nucleotides. In Molecular biology, DNA ligase is a special type of Ligase ( that can link together two DNA strands that have single-strand breaks (a break in both complementary Nucleotides are Organic compounds that consist of three joined structures a nitrogenous base a Sugar, and a Phosphate group