Multiple Choice
Which transcription factor binds directly to the TATA-box sequence during the initiation of transcription?
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15. Gene Expression
Introduction to Transcription
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In the process of transcription, which of the following do snRNPs (small nuclear ribonucleoproteins) bind to?
A
Promoter regions
B
Ribosomes
C
Introns
D
Exons
Verified step by step guidance1
Understand the role of snRNPs: Small nuclear ribonucleoproteins (snRNPs) are essential components of the spliceosome, which is involved in the splicing of pre-mRNA during transcription.
Identify the target of snRNPs: snRNPs bind to specific sequences within introns of pre-mRNA. Their main function is to recognize and bind to the splice sites at the ends of introns.
Differentiate between introns and exons: Introns are non-coding regions of a gene that are removed during RNA processing, while exons are coding regions that remain in the mature mRNA.
Consider the process of splicing: During splicing, snRNPs help remove introns from the pre-mRNA, allowing the exons to be joined together to form a continuous coding sequence.
Conclude the binding target: Based on their function in splicing, snRNPs specifically bind to introns, not promoter regions, ribosomes, or exons.
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