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The promoter
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How does RNA polymerase know where to start transcribing a gene into mRNA?
The enzyme that synthesizes RNA (RNA polymerase) binds specific DNA sequencesthat typically lie before the gene being transcribed. When everything it needs to start synthesis is properly assembled (any cofactors, etc.), only then can it begin transcribing DNA into RNA.
What happens first during transcription?
RNA polymerase reaches the beginning of the gene
How is gene expression regulated?
The gene expression is regulated from transcriptional initiation, to RNA processing, and to the post-translational modification of a protein. The regulation of the genes helps to either decrease or increase the production of a specific gene products.
What is most likely a product of an early gene?
DNA polymerase
How would RNA polymerase be affected if the repressor protein were not bound to the proper site on a gene?
it will prevent the transcription of rNA polymerase
What is the sequence of nucleotides on DNa to with ran polymerase will attach to start transcription?
A promoter is a segment of DNA that helps RNA polymerase recognize the start of a gene.
When transcription begins the enzyme is called?
the RNA polymerase attaches to the promoter and transcribes the gene in messenger RNA, or mRNA
How does RNA polymerase know where to start transcribing a gene into mRNA?
The enzyme that synthesizes RNA (RNA polymerase) binds specific DNA sequencesthat typically lie before the gene being transcribed. When everything it needs to start synthesis is properly assembled (any cofactors, etc.), only then can it begin transcribing DNA into RNA.
RNA polymerase binds to the what gene?
apple
Why every gene need a start codon?
because without it, ribosome (the proteosynthetic apparatus) would not recognize mRNA produced from this gene
What event occurs directly after RNA polymerase recognizes the transcription start of a gene?
The DNA strand begins to unwind, separating the two strand.
What happens first during transcription?
RNA polymerase reaches the beginning of the gene
How is gene expression regulated?
The gene expression is regulated from transcriptional initiation, to RNA processing, and to the post-translational modification of a protein. The regulation of the genes helps to either decrease or increase the production of a specific gene products.
What is most likely a product of an early gene?
DNA polymerase
A typical gene consists of regulatory sites?
RNA polymerase
How would RNA polymerase be affected if the repressor protein were not bound to the proper site on a gene?
it will prevent the transcription of rNA polymerase
How does Transcription take place?
who? the transcription enzyme RNA polymerase, the promoter DNA and the terminator DNAwhere? in the cell nucleusInitiation The promoter, located in the DNA at the beginning of the gene becomes the binding site for the RNA polymerase. Elongation the RNA polymerase copies and peels away the copied DNA, after copied, the DNA joins back with its matching DNA strand while the newly made RNA leave the polymerase Termination the RNA polymerase reaches a special sequence of bases in the DNA template that signals the end of the gene. The polymerase enzyme detaches from the RNA molecule and the gene who? the transcription enzyme RNA polymerase, the promoter DNA and the terminator DNAwhere? in the cell nucleusInitiation The promoter, located in the DNA at the beginning of the gene becomes the binding site for the RNA polymerase. Elongation the RNA polymerase copies and peels away the copied DNA, after copied, the DNA joins back with its matching DNA strand while the newly made RNA leave the polymerase Termination the RNA polymerase reaches a special sequence of bases in the DNA template that signals the end of the gene. The polymerase enzyme detaches from the RNA molecule and the gene
