Dictionary » R » Repressor

Repressor

Repressor

a regulatory protein that binds to an operator and blocks transcription of the genes of an opreon


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Determine whether gene lac I and lac O is functioning?

... with lactose , with IPTG. ONPG is used in all sample to determine the beta galactosidase. I know that both lactose and IPTG can associate with lac repressor and cause expression. If the result of these three treatment only with IPTG appears yellow, can you deduce lac I and lac O which is functioning ...

See entire post
by eos
Fri May 09, 2014 11:57 am
 
Forum: General Discussion
Topic: Determine whether gene lac I and lac O is functioning?
Replies: 0
Views: 579

mRNA transcripts, cis/trans-acting questions

... 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?

See entire post
by animus31
Fri Nov 09, 2012 11:58 am
 
Forum: Genetics
Topic: mRNA transcripts, cis/trans-acting questions
Replies: 0
Views: 2087

DIFFERENT BETWEEN REPRESSOR AND INDUCER

Activator and repressor bind DNA. Activator = transcription; repressor = no transcription (simplified). Inducer does NOT bind DNA. Inducer binds either activator OR repressor. It makes activator BETTER able to bind DNA = more transcription ...

See entire post
by Cat
Fri Oct 19, 2012 12:15 am
 
Forum: Molecular Biology
Topic: DIFFERENT BETWEEN REPRESSOR AND INDUCER
Replies: 1
Views: 2757

DIFFERENT BETWEEN REPRESSOR AND INDUCER

CAN ANY BODY HELP ME TO UNDERSTAND BASIC DIFFERENT BETWEEN REPRESSOR AND INDUCER. AND WHAT IS THE DIFFERENT BETWEEN INDUCER AND ACTIVATOR PROTEIN IN RESPECT TO OPERONS ??

See entire post
by Helics
Wed Oct 17, 2012 3:23 pm
 
Forum: Molecular Biology
Topic: DIFFERENT BETWEEN REPRESSOR AND INDUCER
Replies: 1
Views: 2757

Re:

... appearing in the course of evolution. Form some bacterial experiments, it's evident that new phenotypes most often evolve due to loss of some repressor gene and not due to appearance of some new gene. So, in my opinion, our ancestors had to start with more complete genome... You can read more ...

See entire post
by Cat
Sun Oct 07, 2012 3:25 pm
 
Forum: Evolution
Topic: the genetic code as proof of common ancestor
Replies: 9
Views: 4480
View all matching forum results

This page was last modified 15:18, 17 September 2009. This page has been accessed 18,654 times. 
What links here | Related changes | Permanent link