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Encyclopedia > Phosphodiester bonds
Diagram of phosphodiester bonds between nucleotides
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. Phosphodiester bonds are central to all life on Earth, as they make up the backbone of the strands of DNA. In DNA and RNA, the phosphodiester bond is the linkage between the 3' Carbon atom and the 5' Carbon of the ribose sugar. Diagram of Phosphodiester bonds between Nucleotides I made this diagram using ChemDraw Std 8. ... Diagram of Phosphodiester bonds between Nucleotides I made this diagram using ChemDraw Std 8. ... This article is about the chemical element. ... In chemistry, a phosphate is a polyatomic ion or radical consisting of one phosphorus atom and four oxygen. ... A molecule is the smallest particle of a pure chemical substance that still retains its chemical composition and properties. ... In organic chemistry and biochemistry, esters are organic compounds where an organic group (symbolised by R in this article) replaces a hydrogen atom (or more than one) in an oxygen acid. ... Earth, also known as the Earth, Terra, and (mostly in the 19th century) Tellus, is the third-closest planet to the Sun. ... Space-filling model of a section of DNA molecule Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions specifying the biological development of all cellular forms of life (and most viruses). ... Ribonucleic acid (RNA) is a nucleic acid consisting of a string of covalently-bound nucleotides. ... General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Atomic mass 12. ... Properties An atom (Greek άτομον from ά: non and τομον: divisible) is a submicroscopic structure found in all ordinary matter. ... Ribose Ribose is a five carbon sugar (pentose) that is critical to living creatures. ...


The phosphate groups in the phosphodiester bond are very negatively-charged. Because the phosphate groups are so negatively-charged, there is a large repulsion, which forces the phosphates to take opposite sides of the DNA strands.


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. When a single phosphate or two phosphates known as pyrophosphates break away and catalyze the reaction, the phosphodiester bond is formed. A nucleotide is a monomer or the structural unit of nucleotide chains forming nucleic acids as RNA and DNA. A nucleotide consists of a heterocyclic nucleobase, a pentose sugar (ribose or deoxiribose), and a phosphate or polyphosphate group. ... Ribbon diagram of the catalytically perfect enzyme TIM. Factor D enzyme crystal prevents the immune system from inappropriately running out of control. ... In chemistry, pyrophosphate, or PPi is an anion observed in living systems, usually formed by the hydrolysis of ATP into AMP. The hydrolysis is called pyrophosphorolysis. ...


Phosphodiester bonds can be catalyzed by the action of phosphodiesterases which play an important role in repairing DNA sequences. 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. ...


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. ... Categories: Chemical processes | Chemistry stubs ... Hydroxide is a functional group consisting of oxygen and hydrogen: -O−H It has a charge of 1-. The term hydroxyl group is used when the functional group -OH is counted as a substituent of an organic compound. ...


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. Ribbon diagram of the catalytically perfect enzyme TIM. Factor D enzyme crystal prevents the immune system from inappropriately running out of control. ... In chemistry and biology, catalysis (in Greek meaning to annul) is the acceleration of the rate of a chemical reaction by means of a substance, called a catalyst, that is itself unchanged chemically by the overall reaction. ... Hydrolysis is a chemical process in which a molecule is cleaved into two parts by the addition of a molecule of water. ... Structure of cAMP Cyclic adenosine monophosphate (cAMP, cyclic AMP or 3-5-cyclic adenosine monophosphate) is a molecule that is important in many biological processes; it is derived from adenosine triphosphate (ATP). ... Cyclic guanosine monophosphate (cGMP) is a second messenger derived from GTP. 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. The most fundamental reactions in chemistry are the redox processes. ... DNA damage resulting in multiple broken chromosomes DNA repair is a process constantly operating in each cell of a living being; it is essential to survival because it protects the genome from damage. ...


During the replication of DNA, there is a hole between the phosphates in the backbone left by DNA polymerase I. DNA ligase is able to form a phosphodiester bond between the nucleotides. DNA replication. ... DNA polymerase I is an enzyme that aids in DNA replication. ... In molecular biology, DNA ligase is a particular type of ligase (EC 6. ... A nucleotide is a monomer or the structural unit of nucleotide chains forming nucleic acids as RNA and DNA. A nucleotide consists of a heterocyclic nucleobase, a pentose sugar (ribose or deoxiribose), and a phosphate or polyphosphate group. ...


See also


  Results from FactBites:
 
Using Thiol-Modified Oligos (347 words)
Resuspend the lyophilized oligonucleotide in TE, pH 8.3 - 8.5 at a concentration of approximately 100 A260 units/milliliter.
Reduce the disulfide bond by treatment with 0.1 M DTT (dithiothreitol) at room temperature for 30 minutes.
Remove the excess DTT from the supernatant by gel filtration and proceed directly to the conjugation reaction.
Phosphodiester bonds - Definition, explanation (340 words)
In DNA and RNA, the phosphodiester bond is the linkage between the 3' Carbon atom and the 5' Carbon of the ribose sugar.
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.
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.
  More results at FactBites »


 

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