Team Builder
Would you like to react to this message? Create an account in a few clicks or log in to continue.

Team Builder

Network marketing team building forum
 
HomeSearchLatest imagesRegisterLog in

 

 Post-transcriptional modification

Go down 
AuthorMessage
lunamoonfang




Posts : 241
Join date : 2010-10-27

Post-transcriptional modification Empty
PostSubject: Post-transcriptional modification   Post-transcriptional modification Icon_minitimeMon Dec 13, 2010 11:20 am

Transcription of protein encoding genes creates a primary transcript of RNA at the place where the gene was located. This transcript can be altered before being translated, this is particularly common in eukaryotes. The most common RNA processing is splicing to remove introns. Introns are RNA segments which are not found in the mature RNA, although they can function as precursors, e.g. for snoRNAs, which are RNAs that direct modification of nucleotides in other RNAs.[2] Introns are common in eukaryotic genes but rare in prokaryotes.

RNA processing, also known as post-transcriptional modification, can start during transcription, as is the case for splicing, where the spliceosome removes introns from newly formed RNA.[3]

Extensive RNA processing may be an evolutionary advantage made possible by the nucleus of eukaryotes. In prokaryotes transcription and translation happen together whilst in eukaryotes the nuclear membrane separates the two processes giving time for RNA processing to occur.

_____________
Private Label Skin Care
body building
Back to top Go down
 
Post-transcriptional modification
Back to top 
Page 1 of 1
 Similar topics
-
» Team builder groups on other sites
» Post Your Business
» Post Your FREE Advertising Here
» Just in case you missed the other post!
» POST YOUR AD "FREE" TO 700,000+

Permissions in this forum:You cannot reply to topics in this forum
Team Builder :: General :: Other-
Jump to: