RNA: Structures, types, transcription, control at initiation , control at termination, attenuation, heterogenous RNA processing, capping and tailing
.bmp)
Structure and Types of RNA:- Basic Structure of RNA:- The ribonucleic acid has all the components same to that of the DNA with only 2 main differences within it- i. Thymine which is replaced by the uracil. ii. Deoxyribose sugar is replaced by Ribose sugar. Types of RNA:- i. mRNA:- It is transcribed from DNA and contains the genetic information to make proteins. It has a start codon and a stop codon for protein synthesis. Prokaryotic mRNA is simple. Eukaryotic mRNA has a 5' cap and 3' poly A tail. The 5’ cap protects the mRNA from degradation, and the 3’ poly(A) tail contributes to the stability of mRNA and aids it in transport. ii. tRNA:- These are RNA molecules that translate mRNA into proteins. They of a 3’ acceptor site, 5’ terminal phosphate, D arm, T arm, and anticodon arm. The primary function of a tRNA is to carry amino acids on its 3’ acceptor site to a ribosome complex with the help of aminoacyl-tRNA synthetase. Aminoacyl-tRNA synthetases are enzymes that ...