PPT-Tema 8 mRNA, tRNA y rRNA

CA García Sepúlveda MD PhD Last updated Jan 2019 Laboratorio de Genómica Viral y Humana Facultad de Medicina Universidad Autónoma de San Luis Potosí Tema 8 RNA Introducción mRNAs are single stranded RNA molecules. Overview. Focus on:. Structure of DNA/RNA – can I draw it or interpret drawings. DNA Replication – can I describe the basic process. RNA Transcription – can I explain role of each type of RNA. Biosynthesis of Proteins – can I explain the basic process. In all things of nature there is something of the. marvelous…. (Aristotle). RNA-Directed Polypeptide Synthesis. Genetic Code. ~ Universal & Redundant but not . ambiguous. 61 different . codons. Sbi4up. Mrs. franklin. tRNA. Transfer RNA (. tRNA. ): . an RNA molecule that links the codons on mRNA to the corresponding amino acid for protein synthesis. . Each . tRNA. has 2 functional regions: . 7.3.1. . State that transcription is carried out in a 5’→ 3’ direction.. Nucleotides are added in the form of ribonucleoside triphosphates. 7.3.2. . Distinguish between the . sense and antisense strands of DNA. Flow of genetic information in a cell. How do we move information from DNA to proteins?. transcription. translation. replication. protein. RNA. DNA. trait. DNA gets . all the glory,. but proteins do . DNA directs the activities of the cell by controlling the proteins the cell produces.. This determines what the cell becomes, what it synthesizes, and how it functions. Gene Protein occurs in 2 steps Transcription and Translation. What does DNA stand for?. Deoxyribonucleic Acid. What is located at the BOTTOM of a . tRNA. molecule?. Anti-. codon. sequence. Where in the cell is DNA found?. Nucleus. Scientifically, describe the shape of the DNA molecule.. (RNA). AcaDeca. 2013-2014. Characteristics of RNA. RNA is similar to DNA except for the fact that:. RNA’s . sugar is . r. ibose. O. ne . of the nitrogenous base is . u. racil. It is typically . s. to Protein. How Genes . Work. What do genes code for?. . proteins. cells. bodies. How does DNA code for cells & bodies?. how are cells and bodies made from the instructions in DNA. DNA. The “Central Dogma”. RNA. DNA . RNA. RNA. ( RIBONUCLEIC ACID ) . SINGLE STRANDED NUCLEIC ACID.. RNA CONTAINS RIBOSE (HYDROXYL GROUP ATTACHED TO THE PENTOSE RING) .. Structure. Central Dogma. Template Strand. Coding Strand. RNA Functions. RNA Building Blocks. Structure. Eukaryotic Process. RNA Polymerase. Subunits (Prokaryotes). α (2). β. β’. ω. σ. Transcription. Chapter 17 Opening Roadmap. © 2017 Pearson Education, Inc.. Introduction to Transcription, RNA Processing, and Translation. Proteins are the stuff of life. A cell builds the proteins it needs from instructions encoded in its genome . is a small molecule, existing as a single-strand that is . folded. into a . clover-leaf shape. .. tRNA. The role of tRNA is to bring the amino acids to a ribosome where protein synthesis is taking place. (more on this later). &. RNA structure and functions . Lec. 7. th. Molecular biology . Expression of essential genes is required under all growth conditions but the expression of other genes is conditional. Thus, cells must regulate gene expression using transcription regulation to determine which genes are transcribed and to what extent. Transcription regulation is the most common mechanism to control gene expression in bacteria.