Phosphate group:
Phosphate is an inorganic salt of phosphoric acid or organophosphate is an ester of phosphoric acid. Organophosphate are important in ecology and biochemistry. Inorganic phosphates are used in industry and agriculture. Phosphates can condense to form pyrophosphates, at elevated temperature in solid state.
Structure and chemical properties of phosphate group:
The polyatomic phosphate ion consist of one phosphorous atom surrounded by four oxygen atom forming a tetrahedral arrangement. Phosphate ion is conjugate base of hydrogen phosphate ion ( HPO42− ) and carries a three negative charge. Phosphate salt forms ionic compound when positively charged ion attaches to the negatively charged oxygen atom of …show more content…
Structure of Phosphate ion
Biochemistry:
In inorganic phosphates, phosphorous is present as a free phosphate ion in solution in biologica systems. In organic phosphate (Pi) is the mixture of HPO2-4 and H2PO4-1 ions. By the hydrolysis of pyrophosphates, inorganic phosphates can be created. P2O-47 + H2O 2 HPO-24
Phosphates are most commonly present in DNA, RNA and in adenosine phosphates (ATP,ADP and AMP) and released during hydrolysis of ATP or ADP. In living organisms, phosphoanhydride bond in ATP, ADP and other nucleotide triphosphates and diphosphates provides high energy to them . Phosphates are used as buffering agent.
Importance of Phosphate group:
Phosphate groups are very important to carry out many biological functions. A phosphate group is formed by attachment of phosphorous atom with four oxygen atoms which then attaches to carbon containing molecules present in our body. They can store lots of energy and act as electron carriers. Some compounds containing phosphate group are described …show more content…
These are also known as diphosphates. These are prepared by heating phosphates. Among phosphates, pyrophosphates are of higher solubility, good complexing agents for metal ions. It is the first member of polyphosphates. Pyrophosphate is also known as ester which is formed by the condensation of inorganic phosphates with phosphorylated biological compounds as result a high energy phosphate bond is formed. In 1854 synthesis of tetraethyl pyrophosphate was first described by Philippe de Clermont.
Biochemistry
In biochemistry Pyrophosphates are very important. The anion P2O74− (PPi) is formed by the hydrolysis of ATP, as a result of this hydrolysis ATP is hydrolyzed into AMP in cells ATP → AMP + PPi
The reverse process of hydrolyzation require two high energy phosphates for the conversion of AMP to ATP. It requires two phosphorylated