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Operator region

operator region

(Science: genetics) dNA sequences which signal the initiation of transcription when derepressed.


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mRNA transcripts, cis/trans-acting questions

... are transcribed normally in this mutant. ______ e. The DNA sequence region containing the UAS sites upstream of GAL2 is deleted in this mutant. ... mutations (m1 or m2) is: a. cis-acting? b. trans-acting? c. probably an operator sequence mutation? d. probably a loss-of-function mutation in the ...

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by animus31
Fri Nov 09, 2012 11:58 am
 
Forum: Genetics
Topic: mRNA transcripts, cis/trans-acting questions
Replies: 0
Views: 1707

Questions regarding lac/trp operons

... first strand is oc, therefore the repressor tetramer can't bind to the operator region so this strand is expressed constitutively; the second strand is under negative control ...

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by operon
Thu Mar 08, 2007 7:32 pm
 
Forum: Molecular Biology
Topic: Questions regarding lac/trp operons
Replies: 2
Views: 4478

Lactose Operon

... repressor molecule produced by lactose inducer binds with the operator region of operon and thereby switching off the operon.

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by surya
Sun May 14, 2006 11:03 am
 
Forum: Cell Biology
Topic: Lactose Operon
Replies: 2
Views: 1870

I need help with this problem

... E. coli. The symbols a, b, and c represent the prepressor (I) gene, the operator (O) region and structural gene (Z) for beta-galactosidase, although not necessarily in that order. ...

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by Riyoku
Sun Apr 02, 2006 8:14 pm
 
Forum: Microbiology
Topic: I need help with this problem
Replies: 1
Views: 2787


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