Question
प्रोकैरियोटिक आरएनए पॉलीमरेज की संरचना और कार्य तथा प्रतिलेखन आरंभ में सिग्मा कारक की भूमिका का वर्णन कीजिए।
Answer :
Word Count : 243
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Skip in 10
प्रोकैरियोटिक कोशिकाओं में आरएनए पॉलीमरेज एक बहु-उपएकाई एंजाइम है जो डीएनए से आरएनए का संश्लेषण करता है। इसकी संरचना मुख्यतः पाँच उपएकाइयों से मिलकर बनी होती है, जिन्हें कोर एंजाइम कहा जाता है। यह संरचना α₂, β, β′ तथा ω उपएकाइयों से बनी होती है। दो α उपएकाइयाँ एंजाइम
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