In this essay we will discuss about Protein Synthesis. After reading this essay you will learn about:
After reading this essay you will learn about 1. Classification of Proteins 2. Properties of Proteins and Amino Acids 3.
Synthesis of Proteins and 4.
Essay on Proteins Contents: Essay on the Classification of Proteins Essay on the Properties of Proteins and Amino Acids Essay on the Synthesis of Proteins Essay on the Qualitative Tests for Plant Proteins and Amino Acids Proteins and other related nitrogenous compounds are the principal constituents of protoplasm and hence are directly or indirectly involved in all the physiological processes taking place in the living cells.
Evolution of life itself depended upon the pre-existence of the protein molecule. As soon as the protein molecule was formed from inorganic materials, evolution of life became possible. Proteins often occur in plants in the form of stored foods, particularly in the seeds of many species.
The possible role of nucleic acids in protein synthesis has been analysed recently. All plant proteins contain sulphur; sulphurous amino acid, methionine, has an empirical formula, C5H11O2NS.
The dimensions of protein molecules are enormous, the molecular weights of plant proteins usually ranging from a mere 10, to 6, Insulin, an animal protein vertebrate hormone, secreted by pancreatic glands is, however, the smallest known protein molecule, with a molecular weight of only 5, of 2 subunits each, i.
The molecular weights of virus proteins nucleoproteins of tobacco mosaic have been found to be in the neighbourhood of 40, Though the amino acid compositions of some proteins have been worked out, there are very few proteins again exceptions insulin composed of 51 amino acids of 15 different types in two distinct chains and myoglobin whose actual structure—spatial arrangement of amino acids—are known with certainty.
Proteins can be hydrolysed by treating them with acids or with suitable proteolytic enzymes. The end product of complete hydrolysis of any protein is always a mixture of amino acids. During the course of hydrolysis a number of intermediate compounds of veiling complexities are formed: Essay on the Classification of Proteins: Because the molecular structure of most proteins are so imperfectly understood it is impossible to classify them on a strictly chemical basis.
The physical properties such as solubility in acids, alkalis or salt solutions, coagulation, etc. The following three main groups can be recognised: Yield only amino acids on hydrolysis. The more important simple proteins in plant cells are albumins, globulins, histories, prolamines, glutelins, etc.
Albumins are characterised by their solubility in water; globulins are water-insoluble but readily dissolve in dilute salt solution. The members of this group are proteins with which are combined some non-protein groups. This group includes products that are formed from partial hydrolysis or decomposition of simple proteins.
Essay on the Properties of Proteins and Amino Acids: Almost all proteins are irreversibly coagulated by heat. Some are soluble in alkali while basic proteins are soluble in acids.
Proteins consist of chains of amino acids ranging from a few too many, united by such peptide linkages. Plant and animal protein molecules generally consist of about amino acid units.
About 20 amino acids make up all proteins and all of them are characterised by the molecular grouping R—CHNH2COOH, with R standing for benzene or indole nucleus, an aliphatic chain or a sulphur-containing group. All the amino acids found in plant proteins are of a-amino type.
The amino group, NH2 replaces hydrogen of one of the alkyl radical and the amino group is always attached to the so-called a-carbon atom which is next to the carboxyl group.
In addition, however, plants synthesise about 60 amino acids which, so far as is known, are not incorporated into protein. Amides are salts of amino acids which correspond to inorganic salts. The two most commonly occurring amides in plants are asparagine and glutamine.
Amides are formed from amino acids by replacement of hydroxyl part of the acid by another NH2 radical, e. The amino acid concerned here is asparatic acid derived from succinic acid.
It is evident that amides contain more nitrogen compared to amino acids. In the green leaf, breakdown of proteins results directly or indirectly in the production of some amide, asparagine.The Benefits of Protein.
Protein is an important component of every cell in the body. The reasons why have to do with how high-protein/low-carb diets are thought to lead to weight loss. It is important to understand that proteins are the building blocks for your body while carbohydrates and fats are primarily used for energy.
Think of it like this: the protein is the framing structure, just like wood is the framing structure for a house.
May 01, · 1. Why Is It Important to Study Proteins? In the drama of life on a molecular scale, proteins are where the action is ().Proteins are molecular devices, in the nanometer scale, where biological function is exerted ().They are the building blocks of all cells in our bodies and in all living creatures of all kingdoms.
Proteins can easily be addressed as one of the most important molecules in animal cells. There are many varieties of protein molecules which allow a vast range of biological activities in the cell. The Benefits of Protein. Protein is an important component of every cell in the body. The reasons why have to do with how high-protein/low-carb diets are thought to lead to weight loss.
Protein biosynthesis is an extremely important mechanism because the functions served by the proteins are numerous, ranging from catalysis of cellular .