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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: 2935

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: 5307

The Fiber Disease

... form. Investigation of the structural determinants of regulatory regions in native and specifically modified or engineered proteins. Application ... systems, and have identified avenues of research to examine how an operator’s characteristics influence their performance, workload, and stress ...

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by Nadas Moksha
Fri Dec 15, 2006 8:00 am
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6245215

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: 2070

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: 3139

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