An operon contains several protein coding genes with ONE promoter and operator that is SAME for all the genes. Because of the same promoter, these genes should be express together. While a gene cluster contains several genes located near together with promoters UNIQUE FOR EACH ONE. Unlike operons, the genes in a cluster can be expresses independently. However, generally the genes of a cluster make proteins which work together. For example gene cluster of Cag islands in Helicobacter pylori.
I believe an operon can be defined as a part of the genome that contains a gene cluster controlled by a single promoter otherwise its just a gene cluster.
Operons are defined as "More than a single gene, controlled by the the same controlling region, the operator, and transcribed into a single polycistronic messenger RNA", whereas the terminus gene cluster refers to individual genes, mapping adjacent to one another, normally involved in the same biocjhemical pathway that are individually controlled by individual promoters.
An operon contains several protein coding genes with ONE promoter and operator that is SAME for all the genes. Because of the same promoter, these genes should be express together. While a gene cluster contains several genes located near together with promoters UNIQUE FOR EACH ONE. Unlike operons, the genes in a cluster can be expresses independently. However, generally the genes of a cluster make proteins which work together. For example gene cluster of Cag islands in Helicobacter pylori.
An operon comprises of group of genes that are turned ON or OFF together due to a single promoter and operator upstream to them;
While a gene cluster comprises of group of genes that are located near each other, but there is a specific promoter for each of them. Usually these genes encode proteins which will work together in the same pathway, such as a metabolic pathway. Gene clustering helps a prokaryotic cell to produce metabolic enzymes in a correct order.
An operon comprises of group of genes that are turned ON or OFF together due to a single promoter and operator upstream to them;
While a gene cluster comprises of group of genes that are located near each other, but there is a specific promoter for each of them. Usually these genes encode proteins which will work together in the same pathway, such as a metabolic pathway.
Thank you my partners for your presious answers.
Realy, I appreciate your co-operation.
- Badges
- Science topic
- Similar topics
- Biological Science
- Microbiology
- Microorganisms
- Bacteria