Operons
HIV
Introduction to Gene Regulation
Transcription Factors
microRNA and siRNA
100
A cluster of genes with a single promoter
What is an operon?
100
The retrovirus that causes AIDS.
What is HIV?
100
Are actively expressed all of the time?
What are constitutive genes?
100
Transcription factors that increase expression
What are activators?
100
Stops transcription of a regulated gene from occurring
What is microRNA?
200
Binds to the promoter to start transcription
What is RNA polymerase?
200
The targets of HIV
What are Helper T cells?
200
Are expressed only when their proteins are needed by the cell
What are inducible genes?
200
Transcription factors that decrease expression.
What are repressors?
200
Stops translation of an mRNA sequence.
What are siRNA
300
An example of an inducible system
What is the lac operon?
300
Surface proteins on Helper T cells.
What are CD4 receptors?
300
Advantage to gene regulation
What is conserving resources?
300
Activates RNA polymerase to transcribe a gene
What are enhancers?
300
Bind to microRNAs to stop them from inhibiting transcription.
What are anti-microRNAs?
400
The co-repressor in the trp operon
What is tryptophan?
400
Enzyme responsible for incorporating HIV's genetic information into the host cell's genome
What is integrase?
400
How a virus expresses its genes
What is a virus infecting a host cell and then hijacking its gene expression machinery to express viral genes?
400
Silences genes (stops transcription)
What is a repressor?
400
Precursor formed before microRNA is formed
What is a hairpin precursor?
500
All of the parts that make up the lac operon
What are the promoter, repressor, operator, and cluster of three genes?
500
Enzyme responsible for breaking poly-protein chains and allowing the mature HIV cell to form.
What is protease?
500
A method of gene expression for bacteria.
What is an operon?
500
Everything that binds to the RNA polymerase in an enhanced gene
What is an activator, coactivator, and basal factors?
500
Needed to guide siRNA to a strand of mRNA that is to be degraded.
What is a protein complex?
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