logging in or signing up transcription in prokaryotes paryam Download Post to : URL : Related Presentations : Let's Connect Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 3692 Category: Education License: All Rights Reserved Like it (2) Dislike it (0) Added: November 01, 2010 This Presentation is Public Favorites: 0 Presentation Description Animation of Initiation, Elongation and Termination Comments Posting comment... By: rishabh. (38 month(s) ago) respected sir , can u please mail this slide presentesion on my mail id email@example.com Saving..... Post Reply Close By: tejaswi16 (24 month(s) ago) mail me this slide presentaion to firstname.lastname@example.org Saving..... Edit Comment Close Premium member Presentation Transcript Transcription in Prokaryotes : Transcription in Prokaryotes By Group 13 STEP 1:INITIATION : STEP 1:INITIATION Initiation : Initiation The promoter is in yellow and the terminator is in white. Initiation starts... Initiation : Initiation RNA Polymerase binds to proteins called sigma factors to form a Holoenzyme and initiates transcription... RNA Polymerase synthesises nucleic acid in the 5’ to 3’ direction and reads it in the 3’ to 5’ direction. This recognises promoter regions in the DNA. Initiation : Initiation As the RNA polymerase moves down the DNA, the complimentary/ template strand pairs again with the previous stretch of DNA... Initiation : Initiation An Open Complex is formed and the sigma factor dissociates from the holoenzyme. As the DNA is unwound, it becomes single stranded at the initiation site. A template for RNA synthesis is formed from the non-paired deoxyribonucleotides. Through complementary base pairing, Ribonucleotides with three phosphate groups hydrogen bond to the deoxyribonucleotides STEP 2:ELONGATION : STEP 2:ELONGATION Elongation : Elongation Elongation starts... The coding strand is in blue and the template strand is in green Elongation : Elongation The RNA transcript gradually increases in length. Elongation : Elongation During elongation, the RNA Polymerase uses ATP, GTP, CTP and UTP. STEP 3:TERMINATION : STEP 3:TERMINATION Termination : Termination Termination starts... RNA Polymerase encounters a stop signal at the end of the gene. This is also known as a terminator Termination : Termination The completed mRNA drops off the gene when transcription is complete. Termination : Termination A single gene can be multiplied as a new molecule of RNA Polymerase can bind to the receptor and start the transcription process all over again... You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.