16.11). Such polycistronic mRNA is typically found in prokaryotes. The genes in an operon are often related functionally, so it makes good sense to regulate them as a group. For example, an operon may encode several enzymes that take part in the same biochemical pathway. Some operons have ...
16.11). Such polycistronic mRNA is typically found in prokaryotes. The genes in an operon are often related functionally, so it makes good sense to regulate them as a group. For example, an operon may encode several enzymes that take part in the same biochemical pathway. Some operons have ...
The analysis of difrerent bactprial systems leads to the conclusion that in the synthesis of certain proteins (enzymatic or viral) a double ginetic determinisrn intervenes involving two genes with distinct functions; one (the gene for struc-ture) responsible for the structure of the molecule, ...
The ars operon consists of a group of genes coding for a transmembrane pump and an arsenate reductase (arsC). The operon includes a regulatory gene (arsR) and a gene coding for an arsenite-specific pump (arsB) as well as arsC [13]. Arsenite is pumped directly out of the cell by the...
It is characterized by its low affinity (Km 7-10 mM), but high Vm [11], thus being able to dissimilate high concentrations of acetate. These two genes belong to the same operon [12] and are constitutively expressed, although ackA is slightly activated by Fnr [13]. The reaction ...
The HrAgo1 operon is also unique in that flanking hrAgo1 are an rnc gene, encoding a protein that comprises an RNaseIII domain fused to a double-stranded RNA binding domain (dsRBD), and a gene encoding a HEDxD/H helicase (Fig. 1c). These domains show homology to the functional ...
Signatures of parallel evolution provide a simple way to identify putative beneficial mutations that underpin adaptation to the novel environment of the human host3,27. Parallel evolution occurred in 3 genes or operons that have functional roles in resistance to carbapenem antibiotics (oprD)27, algina...
Theaceae, comprising 300 + species, holds significance in biodiversity, economics, and culture, notably including the globally consumed tea plant. Stewartia gemmata, a species of the earliest diverging tribe Stewartieae, is critical to offer insigh
Anoperonis a cluster of genes that are transcribed together to give a single messengerRNA(mRNA) molecule, which therefore encodes multiple proteins (Fig. 16.11). Suchpolycistronic mRNAis typically found inprokaryotes. The genes in an operon are often related functionally, so it makes good sense ...
The location of an operon on an extrachromosomal replicon or in the vicinity of mobile genetic elements may indicate that these genes were recently acquired or that they are nonessential, but beneficial, for the survival of the organism. For example, the lactose- and peptide-utilization genes of...