Dictionary » O » Operator

Operator

Definition

noun, plural: operators

(1) (genetics) A segment of DNA where the repressor binds to, thereby preventing the transcription of certain genes.

(2) (surgery) The one performing surgical procedures.


Supplement

(Genetics) In the Operon Model, the operator is the gene in which a repressor binds. This results in the prevention of the RNA polymerase from binding to it, thus, preventing the expression of certain genes in the operon unit.


Word origin: Latin operā ( rī ) (to work, effect).

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mRNA transcripts, cis/trans-acting questions

... F’: m1A+B - yes yes no yes A - B+ / F’: m2A+B - no yes no yes Which of the 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 gene encoding a repressor to the operon?

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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: 2087

Re: Sound and how the brain reacts to it

... that affects me, not what is being said, for the most part. Mine, however, is almost always women's voices, not men. I used to work as a telephone operator, and every now and then a woman's voice on the other end of the line would put me into this trance state - I would do anything I could to keep ...

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by chillsdownmyspine
Thu Aug 18, 2011 10:36 pm
 
Forum: Human Biology
Topic: Sound and how the brain reacts to it
Replies: 89
Views: 142293

The Arabinose Operon

... I’m trying to wrap my head around the The Arabinose Operon and I’m having some trouble visualizing what’s taking place. They say: araO1 is an operator site. AraC binds to this site and represses its own transcription from the PC promoter. In the presence of arabinose, however, AraC bound at ...

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by Thraxman
Fri Oct 22, 2010 2:59 am
 
Forum: Genetics
Topic: The Arabinose Operon
Replies: 2
Views: 7662

Re:

It is mostly about the technical skill of the operator. A skilled person with good injection tools might be able to carry out the procedure even under a fairly basic microscope. Actually the only required thing from the microscope is that it allows ...

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by hashemyemen
Mon Mar 22, 2010 1:43 pm
 
Forum: General Discussion
Topic: Question to be answered please
Replies: 32
Views: 12525

Question to be answered please

It is mostly about the technical skill of the operator. A skilled person with good injection tools might be able to carry out the procedure even under a fairly basic microscope. Actually the only required thing from the microscope is that it allows ...

See entire post
by biohazard
Mon Mar 22, 2010 12:25 pm
 
Forum: General Discussion
Topic: Question to be answered please
Replies: 32
Views: 12525
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