× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
r
4
Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
New Topic  
ppk ppk
wrote...
Valued Member
On Hiatus
Posts: 3561
Rep: 58 2
13 years ago
In an animal that has only a single myosin heavy chain (MHC) gene, striated skeletal muscle contains an isoform of MHC that is not found in smooth muscle, which contains a different isoform not found in skeletal muscle. (Isoforms: very similar proteins with the same general function but some difference in amino acid sequence.)  List three different mechanisms that could account for this pattern of myosin expression.
Read 1316 times
1 Reply

Related Topics

Replies
wrote...
#1
Educator
13 years ago
1) alternative promoters used in the two tissues, leading to MHCs with different N-termini. 

2) alternative internal splicing, leading to differences in the exons that end up in processed mRNAs.

3) alternative poly-A addition sites that lead to MHCs with different C-termini.

Enjoy, Bio_man 8)
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1160 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 74
  
 98
  
 337
Your Opinion
What percentage of nature vs. nurture dictates human intelligence?
Votes: 431
Previous poll results: Where do you get your textbooks?