The transcriptional regulator proteins keep the apparatus from being degraded by enzymes. B. The basal transcription apparatus can only produce minimal levels of transcription without them.
C. The basal transcription apparatus will not bind to the promoter without them. D. The transcriptional regulator proteins will recruit RNA polymerases. E. The basal transcription apparatus will repress transcription without them. B. The basal transcription apparatus can only produce minimal levels of transcription without them.
D. DNA must be unwound from histone proteins before transcription of a gene takes place. E. One promoter controls a cluster of genes. A. DNA‑binding proteins influence the ability of RNA polymerase to initiate transcription of a gene.
A. DNA‑binding proteins influence the ability of RNA polymerase to initiate transcription of a gene. B. Genes are organized into operons. C. The nuclear membrane separates gene transcription and translation. D. DNA must be unwound from histone proteins before transcription of a gene takes place.
Why are transcriptional regulator proteins necessary? The basal transcription apparatus can only produce minimal levels of transcription without them. The basal transcription apparatus will repress transcription without them. The transcriptional regulator proteins keep the apparatus from being degraded by enzymes.
Transcriptional regulation is a critical biological process that allows the cell or an organism to respond to a variety of intra- and extra-cellular signals, to define cell identity during development, to maintain it throughout its lifetime, and to coordinate cellular activity.
Regulatory sequences are bound tightly and specifically by transcriptional regulators, proteins that can recognize DNA sequences and bind to them. The binding of such proteins to the DNA can regulate transcription by preventing or increasing transcription from a particular promoter.
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.