0
votes
1answer
30 views

What information do microarray image convey?

OK I have read that a cell generates 4 kinds of digital (to be precise discrete) data namely DNA, RNA, Protein (sequences that can be encoded as string sequences of nucleotides/ amino acids) and micro ...
0
votes
2answers
115 views

How to determine the actual flux in the human metabolic model of a cell line?

The problem to be solved is to determine what the flux values are for the different reactions in the human metabolic model. As far as I understand, a good way to do that would be to use gene ...
2
votes
1answer
36 views

What is mRNA expression level?

I cannot find clear explanation of what is mRNA expression level, and how to measure it. I would appreciate if someone explained it or gave a reference. Thanks!
1
vote
1answer
91 views

explanation of conjugation experiment in bacteria

In this paper (On the expression of a structural gene) I am confused about what is being plotted in Figure 6. The x-axis contains the fraction of radioactive day and y-axis contains the enzyme ...
2
votes
1answer
58 views

Expression of bidirectional promoters

How are bidirectional promoters expressed ? (Won't RNA Pol have to go in 3'-5' direction?) Why are they more commonly found in eukaryotes than prokaryotes?
2
votes
1answer
100 views

How can a continuous RNA be transcribed in the lac operon?

The lac operon has 3 genes: lacZ , lacY and lacA. I have seen that the m-RNA transcript of these genes has stop codons in between. So, how can the RNA be made continuously? Won't the RNA Pol detach if ...
7
votes
1answer
45 views

circulating microRNAs are functional?

In plasma and other body fluids, miRNAs can be found. They not only originate from dying cells but also from active secretion and are usually 'packed' into vesicles/lipo-proteic structures (i.e. ...