Protein Synthesis: Transcription

Slides:



Advertisements
Similar presentations
How is RNA Transcribed from DNA
Advertisements

Ch 17 Gene Expression I: Transcription
T HE C ENTRAL D OGMA OF B IOLOGY STATES THAT DNA CODES FOR RNA, AND RNA CODES FOR P ROTEINS When DNA codes for RNA, the process is called TRANSCRIPTION.
SBI 4U November 14 th, What is the central dogma? 2. Where does translation occur in the cell? 3. Where does transcription occur in the cell?
Cell Protein Production
Transcription: Synthesizing RNA from DNA
RNA (Ribonucleic acid)
Syllabus Transcription as the production of mRNA from DNA. The role of RNA polymerase. The splicing of pre-mRNA to form mRNA in eukaryotic cells.
Transcription: Synthesizing RNA from DNA
FROM GENE TO PROTEIN: TRANSCRIPTION & RNA PROCESSING Chapter 17.
NAi_transcription_vo1-lg.mov.
From Gene to Protein Chapter 17.
Genetics 3: Transcription: Making RNA from DNA. Comparing DNA and RNA DNA nitrogenous bases: A, T, G, C RNA nitrogenous bases: A, U, G, C DNA: Deoxyribose.
Protein Synthesis Transcription and Translation. Protein Synthesis: Transcription Transcription is divided into 3 processes: –Initiation, Elongation and.
Protein Synthesis Transcription.
RNA & Transcription. RNA (Ribonucleic Acid) Journal For all your RNA news!
Transcription vs Translation. Central Dogma Transcription Translation.
Transcription … from DNA to RNA.
Biology 12 Transcription and Translation: A closer look.
Processes DNA RNAMisc.Protein What is the base pair rule? Why is it important.
TRANSCRIPTION Copying of the DNA code for a protein into RNA Copying of the DNA code for a protein into RNA 4 Steps: 4 Steps: Initiation Initiation Elongation.
The Central Dogma of Molecular Biology replication transcription translation.
Lesson 3 – Gene Expression
Protein Synthesis- Transcription DNA-->RNA. Expression of Gene or Protein Synthesis I. Transcription A. Initiation B. Elongation C. Termination D. RNA.
Regents Biology From gene to protein: transcription translation protein.
TRANSCRIPTION. Initiation  Transcription factors bind to the promoter region  RNA polymerase binds to the promoter region  The enzyme’s active site.
CFE Higher Biology DNA and the Genome Transcription.
The beginning of protein synthesis. OVERVIEW  Uses a strand of nuclear DNA to produce a single-stranded RNA molecule  Small section of DNA molecule.
TRANSCRIPTION (DNA → mRNA). Fig. 17-7a-2 Promoter Transcription unit DNA Start point RNA polymerase Initiation RNA transcript 5 5 Unwound.
1 RNA ( Ribonucleic acid ) Structure: Similar to that of DNA except: 1- it is single stranded polyunucleotide chain. 2- Sugar is ribose 3- Uracil is instead.
Molecular Genetics Transcription. the process where the DNA code is used to make a complementary mRNA strand three main stages: 1. initiation 2. elongation.
The flow of genetic information:
Answers to Homework Tasks
RNA & Transcription.
Transcription, RNA Processing, & Translation
From Gene to Protein: Transcription & RNA Processing
Protein Synthesis - Transcription
Gene Expression and Protein Synthesis
Transcription, RNA Processing, & Translation
Transcription.
Transcription.
Genetics Unit I-Part C Transcription
Transcription & Gene Expression
Types of RNA and TRANSCRIPTION
Transcription.
Chapter 5 RNA and Transcription
Protein Synthesis Genetics.
Topic DNA.
D. RNA – ribonucleic acid
Transcription Ms. Day AP Biology.
Agenda 3/7 Protein Warm Up Transcription Notes Transcription Model
TRANSCRIPTION Sections 5.2 & 5.3.
Transcription.
From Gene to Protein: Transcription & RNA Processing
SBI 4U: Metablic Processes
Protein Synthesis Chapter 10.
Transcription in Prokaryotic (Bacteria)
Transcription Definition
DNA and the Genome Key Area 3b Transcription.
PROTEIN SYNTHESIS THE DETAILS.
Analogy Video Central Dogma Analogy Video (Resources Page)
Cell Protein Production
PROTEIN SYNTHESIS.
Daily Warm-Up Dec. 11th -What are the three enzymes involved with replication? What is the function of each? Homework: -Read 13.1 Turn in: -Nothing.
The transcription process is similar to replication.
Central Dogma Central Dogma categorized by: DNA Replication Transcription Translation From that, we find the flow of.
13.1: RNA & Transcription.
Dr. Israa ayoub alwan Lec -7-
Chapter 6.2 McGraw-Hill Ryerson Biology 12 (2011)
TRANSCRIPTION SBI 4UI – 5.3.
Presentation transcript:

Protein Synthesis: Transcription Miss Richardson SBI4U

Transcription Purpose: to produce a copy of a segment of genomic DNA Location: Nucleus Stages: Initiation Elongation Termination Transcription

Only one DNA strand is transcribed – the antisense/template strand The other strand – the sense/coding strand has the same sequence as the mRNA (with T instead of U) Initiation

Transcription factors guide the binding of the enzyme RNA polymerase to the promoter region and the helix separates A sequence of approximately 40 bases, upstream from the gene Contains high concentration of adenine and thymine bases Initiation

RNA polymerase is like DNA polymerase but doesn’t need primers It moves along unwinding & unzipping the template DNA strand, and assembles mRNA in the 5’ to 3’ direction Ribonucleotides form H-bonds with complementary bases Phosphodiester bonds form between the ribonucleotides The resulting mRNA is the same as the coding DNA strand (with U replacing T) 100’s of mRNA molecules can be made from one gene at a time Elongation

Elongation

RNA polymerase recognizes the termination sequence and new mRNA strand is released

Eukaryotic mRNA is modified with the aide of enzymes prior to translation 5’ end: 7 methylated guanosine cap the transcript to prevent digestion 3’ end: poly-A tail (200 adenines) added to stabilize molecule Splicing: introns (non-coding regions) are removed by enzymes (spliceosomes) exons (coding regions) are joined to form mature mRNA mRNA Modifications