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Unformatted text preview: need triosmoase. BIO 1140 Unit 2-2: Transcription Transcription Overview (elongation) Termination and RNA processing: It is difficult to define an exact
sequence for a terminator but linked to cleavage of the RNA and
polyadenlyation (see modification of RNA).
18 how we terminate properly Fig. 13-6, p. 290
(see also Fig 13-4 if you are only transcribing a few times, the helix may
wind up, if you transcribe many times, the helix will
stay open because you are going to be re initiating
with a new RNA polymerase frequently. RNA
template comes to the end, DNA unwinds ,the RNA
comes out. When it comes to the end it is either
processed or translated. If is processed, then it will be
translated. We go beyond termination and then we
keep going, then stop. BIO 1140 Unit 2-2: Transcription Transcription: Under ideal(rare) conditions you can see it!
Two rRNA genes being transcribed
as seen by EM.
From initiation at the left the rRNA gets
longer to the right. The cartoon
version is below. 19 2 RIBOSOMAL P...
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- Winter '07