Regulation of Gene Transcription - AP Biology

Generates different mRNA variants from the same gene. Increases protein diversity from a single gene.

Decreases transcription by binding repressor proteins. Regulatory elements that reduce gene expression.

Decreases transcription by tightening DNA-histone interaction. Compacts chromatin, reducing gene accessibility.

A cluster of genes regulated together. Found in prokaryotes for coordinated gene control.

Protects mRNA from degradation and aids ribosome binding. Stabilizes mRNA and facilitates translation initiation.

Increases transcription by loosening DNA-histone interaction. Opens chromatin structure for gene accessibility.

Helicase. Separates DNA strands for RNA polymerase access.

DNA methylation. Silences genes by adding methyl groups to cytosine.

Increase transcription by binding to enhancers. Promote gene expression by recruiting RNA polymerase.

Facilitates interaction between transcription factors and RNA polymerase. Bridges regulatory proteins with transcription machinery.

mRNA, tRNA, and rRNA. All RNA types produced during transcription.

Initiates transcription by binding RNA polymerase. Acts as the binding site where transcription begins.

Transcribes tRNA and some small RNAs. Synthesizes transfer RNA and regulatory RNAs.

RNA splicing. Removes non-coding sequences from pre-mRNA.

RNA interference. Post-transcriptional gene silencing mechanism.

Proteins that bind to DNA sequences. Regulatory proteins that control gene expression levels.

Indicates where transcription starts by binding transcription factors. Core promoter element crucial for transcription initiation.

Increases transcription levels by interacting with activators. DNA sequences that boost gene expression remotely.

RNA polymerase I. Produces ribosomal RNA in the nucleolus.

Altered gene expression due to faulty transcription initiation. Disrupts normal transcription factor binding.

Regulates transcription by interacting with repressors. DNA sequence that controls repressor binding.

RNA interference. Uses small RNAs to silence target genes.

Repressor. Blocks transcription when bound to operator.

Assist in forming the transcription initiation complex. Required for RNA polymerase binding and function.

RNA polymerase II. Specifically synthesizes messenger RNA transcripts.

Guides RNA polymerase to the promoter. Helps RNA polymerase recognize specific promoters.

Allolactose. Derived from lactose, activates the lac operon.

Terminator sequence. Signals the end of transcription in bacteria.

Promoter. Required regulatory sequence for gene expression.