Archive | Proteins

Protein Biosynthesis: An Overview (With Statistics)

The variety of proteins synthesized by a cell and the specific amino acid compositions of each protein are ultimately governed by the cellular DNA. This DNA is enzymatically transcribed in the cell nucleus to pro­duce a host of RNAs, including ribosomal RNA (rRNA), messenger RNA (mRNA), and transfer RNA (tRNA). Different RNA polymerases are responsible for the synthesis of each [...]

By |2015-08-27T15:57:47+00:00September 30, 2014|Proteins|Comments Off on Protein Biosynthesis: An Overview (With Statistics)

Mechanism of Protein Synthesis (Explained With Diagram)

Thousands of experiments carried out during the past 25 years involving hundreds of scientists have slowly and painstakingly revealed the intricate details of the mechanism by which proteins are synthesized in pro­karyotic and eukaryotic cells. The overwhelming ma­jority of these studies were conducted using two par­ticular kinds of cells, namely, the bacterium E. coli and the mammalian reticulocyte. Bacterial cells [...]

By |2015-08-27T15:58:46+00:00September 26, 2014|Proteins|Comments Off on Mechanism of Protein Synthesis (Explained With Diagram)

Useful notes on Protein Turnover in Cells

The rate of breakdown and replacement of protein in cells was badly misunderstood prior to 1939. In grow­ing animals generally and in secretory tissues in par­ticular (liver, pancreas, endocrine glands, etc.), active synthesis of protein was known. However, the amount of protein synthesis taking place in other tissues of the adult was believed to be very low and confined to [...]

By |2015-08-27T15:58:51+00:00September 26, 2014|Proteins|Comments Off on Useful notes on Protein Turnover in Cells
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