Dictionary » O » Operator

Operator

Operator

(Science: molecular biology) The site on dNA to which a specific repressor protein binds and prevents the initiation of transcription at the adjacent promoter.


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... effect 3.In which of the following classes of genes do mutant genes fail to repress cell division? Silencer genes Oncogenes Tumor suppressor genes Operator genes Promoter genes 4.The reason v-oncs cause cancer whereas normal c-oncs do not is because: More than one v-onc occurs in the tumor cell ...

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by kpax
Tue Aug 25, 2009 2:33 pm
 
Forum: Genetics
Topic: Please Help
Replies: 1
Views: 46

Regulatory elements of genes

Bioedit. There's also the operator, translation termination sequence and the stop codon, plus the consensus sequences at -10 and -35.

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by Sepals
Wed Mar 26, 2008 1:40 pm
 
Forum: Molecular Biology
Topic: Regulatory elements of genes
Replies: 3
Views: 488

NEED HELP!

... tests to determine which major operons regulate your gene... Its probably in your book. Changing the mechanism is pretty easy, just change the operator sequence upstream of the gene. I'm not really sure what the limitations of your answer are though, but there are plenty of solutions.

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by h2so4hurts
Mon Nov 26, 2007 5:01 pm
 
Forum: Bioinformatics
Topic: NEED HELP!
Replies: 4
Views: 1414

Re: help with report on Plasmid Properties

... therefore as cAMP rises , Lac O is activated : cAMP acts by binding to a protein called CRP to form (cAMP,CRP) complex that would bind to the operator domain of Lac o preventing the binding of Lac O repressor and so , Lac O is activated and transcribed, beta galactosidase is secreted and breaks ...

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by Biologista
Fri Oct 26, 2007 6:19 pm
 
Forum: Molecular Biology
Topic: Re: help with report on Plasmid Properties
Replies: 4
Views: 692

HELP ME PLEASE ......!!

... produced in response to the presence of a substrate is called A a. an inducible enzyme b. a repressible enzyme c. a restriction enzyme d. an operator e. a promoter 42. The DNA probe, GGCTTA, will hybridize with DNA containing – most likely C, but the polarity of all strands should be given ...

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by BCH04
Mon Jun 18, 2007 4:15 pm
 
Forum: General Discussion
Topic: HELP ME PLEASE ......!!
Replies: 12
Views: 4148
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