(question from a test) Some post-translational modifications have the function of linking the protein to the plasma membrane. a) What is the common characteristics among all of them? Explain. b) Which one is functionally different? Explain.
Gene Interactions
When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.
Gene Expression
Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.
(question from a test)
Some post-translational modifications have the function of linking the protein to the plasma membrane.
a) What is the common characteristics among all of them? Explain.
b) Which one is functionally different? Explain.
Post-translational modifications are defined as the covalent chemical modifications made to proteins after the process of ribosomal translation.
(a) Post-translational modifications will include phosphorylation, ubiquitination, glycosylation, nitrosylation, methylation, acetylation, lipidation and proteolysis. The common characteristic among different post-translational modifications is that they require an enzyme to catalyze the specific reaction. For example, phosphorylation requires enzyme protein kinase, proteolysis requires proteases, and so on.
(b)Post-translational modification that is functionally different is proteolysis because it is the breakdown of protein into their respective smaller polypeptides or amino acids. In contrast, all the other post-translational modifications are adding different substances or molecules to the proteins.
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