What are the differences between prokaryotic and eukaryotic promoters?
What are the differences between prokaryotic and eukaryotic promoters?
Eukaryotic promoters are the regulatory sequences that initiate the transcription of eukaryotic organisms. Prokaryotic promoters are the regulatory sequences that initiates the transcription of prokaryotic genes.
How do bacterial promoters differ from those used in eukaryotes?
Promoter binding is very different in bacteria compared to eukaryotes. In bacteria, the core RNA polymerase requires an associated sigma factor for promoter recognition and binding. On the other hand, the process in eukaryotes is much more complex.
What is the difference between prokaryotic and eukaryotic gene regulation?
Prokaryotic transcription and translation occur simultaneously in the cytoplasm, and regulation occurs at the transcriptional level. Eukaryotic gene expression is regulated during transcription and RNA processing, which take place in the nucleus, and during protein translation, which takes place in the cytoplasm.
Are eukaryotic promoters more complex than prokaryotic?
The eukaryotic promoter is far more complex and variable than the prokaryotic promoter. Several conserved regions do exist, however. A conserved TATA sequence is located at approximately the -25 position upstream of the start site. An initiator element is located between the -3 and +5 region.
How prokaryotic promoters are different from the promoters of the eukaryotic protein coding genes?
For example, a prokaryotic promoter is observed to have two hexameric motifs centered at or near −10 and −35 positions relative to the TSS (1). The structure of eukaryotic promoters is generally more complex and they have several different sequence motifs, such as TATA box, INR box, BRE, CCAAT-box and GC-box (2).
What is the difference between the core promoter and promoter proximal regulatory elements in eukaryotic cells?
The core promoter is the site for binding of proteins required for transcribing all genes, such as TATA-binding protein and RNA polymerase, but the promoter-proximal elements are unique to sets of genes that are regulated together.
What is the main difference between prokaryotic and eukaryotic genes quizlet?
A prokaryotic genome is often a single DNA molecule whereas eukaryotic genomes usually consist of a number of DNA molecules. 2. Eukaryotic cells have membrane-bound organelles. Prokaryotic cells do not have membrane-bound organelles.
What is the difference between the core promoter and promoter proximal regulatory elements found in eukaryotic cells quizlet?
Why are eukaryotic promoters more variable than bacterial promoters?
Why are eukaryotic promoters more variable than bacterial promoters? There are multiple RNA polymerases in eukaryotes, each of which binds to a different consensus sequence.