Spring fur Tokio Hotel

If you're not a TH fan... SHOOT YOURSELF!!!
 
HomePortalFAQSearchRegisterMemberlistUsergroupsLog in

Share | 
 

 Post-transcriptional modification

Go down 
AuthorMessage
lunamoonfang
Well known
Well known


Number of posts : 112
Age : 26
Registration date : 2010-12-02

PostSubject: Post-transcriptional modification   Mon 13 Dec 2010, 10:33

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.

_____________
key man insurance
Business Success books
Back to top Go down
View user profile
 
Post-transcriptional modification
Back to top 
Page 1 of 1
 Similar topics
-
» IMPORTANT NEW BLOG ENTRY BY DYEBAT!!!
» Japan earhtquake/tsunami effects here in Santa Cruz
» DrummersHealth.com For The Health Of Drummers
» 1930's screwball comedies - the must see list...
» Ozzy Osbourne comments on lawsuit against Tony Iommi

Permissions in this forum:You cannot reply to topics in this forum
Spring fur Tokio Hotel :: Stuff :: Spring videos-
Jump to: