Bio2250 - DNA Open
Reading Frame Practice Problems
5'- T A T G G G A T T A T G A T C T C T A A A T G A A A G A T C A
C C C
C - 3'
3'- C T A
C
C C T A A T A C T A G A G A T T T A C T T T C T A G T G G G G - 5'
5'- T C A A T G A G G G T C A G G T G A T C A T G T G A C T C C T
T C A
A T A - 3'
3'- A G T
T
A C T C C C A G T C C A C T A G T A C A C T G A G G A A G T T A T
- 5'
5'- T T G A C T T A G G T A A A A T A A C A A A T T A G T C A T T
G G A
A - 3'
3'-
A A C T G A A T C C A T T T T A T T G T T T A A T C A T T A A C C
T T -
5'
5'- g t
t a a c t
a a t c a g t c a g t t a a c t a - 3'
3'- c
a a t t g a t t a g t c a g t
c a a t t g a
t - 5'
The above DNA sequences
are
from the middle of various eukaryotic
protein-coding
genes.
a) Identify the single Open Reading Frame in each
sequence.
b) Give the polypeptide encoded by
that reading frame; label
the N and C terminii
c) Is the above process 'Translation' ?
Explain.
d) For
the advanced student: Can you identify the gene segments
above
as part of particular protein-coding loci? Use BLAST at NCBI
All text
material © 2012 by
Steven M. Carr