Question

Describe the structure and function of prokaryotic RNA polymerase and the role of the sigma factor in transcription initiation

10 Feb 2026
Answer :
Word Count : 259
Prokaryotic RNA polymerase is a multi-subunit enzyme responsible for transcription of DNA into RNA and plays a central role in gene expression and regulation. The core enzyme consists of five subunits: two alpha (α) subunits, one beta (β), one beta prime (β′), and one omega (ω) subunit, forming the structure α2ββ′ω. The α subunits are involved in enzyme assembly and interaction with regulatory proteins. ______ ___ _________ _________ ________ __________ ____.
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