The necessary components for gene expression are often described as either cis-acting elements (“acting from the...

The necessary components for gene expression are often described as either cis-acting elements (“acting from the same molecule”) or trans-acting factors (“acting from a different molecule”). Cis-acting elements are typically sequences that are required for expression. Trans-acting factors are typically proteins that recognize and bind cis-acting sequences to control or facilitate gene expression. For each of the cis-acting elements below, Promotor and Start Codon,list a trans-acting factor involved in its recognition and describe the factor’s normal function

Expert Solution

Cis-acting elements are nucleic acid sequence elements. They act on the same sequence. They cannot be complemented. They do not code for a diffusible product.
Ex: Promoter, operator, enhancer, silencer, start and stop codons.

Trans-acting factors are diffusible products such as RNA or protein. They act in trans. They can be complemented.
Ex: RNA and protein

The promoter is recognized by RNA polymerase.
Enhancer is recognized by activator proteins
Silencer is recognized ba y repressor.
Translation start and stop codons are recognized by ribosomes (Initian and release factors).
Transcription start and stop codons are recognized by RNA polymerase (Initian and termination factors).

gladiator answered 2 years ago

4. The necessary components for gene expression are often described as either cis-acting elements (“acting from...

4. The necessary components for gene expression are often described as either cis-acting elements (“acting from the same molecule”) or trans-acting factors (“acting from a different molecule”). Cis-acting elements are typically sequences that are required for expression. Trans-acting factors are typically proteins that recognize and bind cis-acting sequences to control or facilitate gene expression. For each of the trans-acting factors below, describe their enzymatic activity and one of their cis-acting target sequences. [8 pts; 4 pts each] 4a. RNA Polymerase...

List 3 different types of cis-acting elements that influence eukaryotic gene expression and briefly describe their function.

Of all the cis-acting elements associated with a gene, which is the most important? Why?

Discuss eukaryotic gene regulation including the cis-acting elements and the major groups of trans-acting factors.

Discuss eukaryotic gene regulation including the cis-acting elements and the major groups of trans-acting factors. Be sure to include the relative distances from the gene and the sequence characteristics of the major elements.

Describe the difference between cis-acting and trans-acting elements. Also list whether the following elements are cis- or trans-acting:

Describe the difference between cis-acting and trans-acting elements. Also list whether the following elements are cis- or trans-acting: A) β-galactosidase B) Operator site C) LacI repressor protein D) Lactose E) Permease F) Promoter site

Describe the difference between cis-acting and trans-acting elements. Also list whether the following elements are cis-...

Describe the difference between cis-acting and trans-acting elements. Also list whether the following elements are cis- or trans-acting: A) Beta-galactosidase B) Operator site C) LacI repressor protein D) Lactose E) Permease F) Promoter site

For each of the following, indicate if it is cis-acting or trans-acting A regulatory gene that...

For each of the following, indicate if it is cis-acting or trans-acting A regulatory gene that codes for a transcription factor _______________ A promoter _______________ An operator _________________ An enhancer _________________

Compare the cis acting elements of prokaryotic and eukaryotic transcriptional regulation.

How can cis- and trans- acting regulatory elements be distinguished?

Consider the lac operon in E. coli. a. List the cis-acting elements and the trans-acting factors...

Consider the lac operon in E. coli. a. List the cis-acting elements and the trans-acting factors involved in the regulation of its expression. b. Indicate which Transacting factors interact with which cis-elements. c. Describe what the factors do when they are bound to their respective cis–elements. d. Indicate the inducer in this system and how it works.

Question