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What state is the repressor protein in when tryptophan is absent?
Wiki User
∙ 11y ago
The repressor protein is inactive.
Wiki User
∙ 11y ago
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Describe how E. coli uses the negative and positive control of the lac operon to economize on RNA and protein synthesis?
if a regulatory protein in its active state turns off the expression of the operon, the operon is said to be negatively regulated by the regulatory protein. if the regulatory protein in its active state truns on the operon, the operon is positively regulated by the regulatory protein. an operon regulated by a repressor is therefore negatively regulated, because the presence of the active repressor prevents transcription of that operon. in contrast, an operon regulated by an activator is positively regulated, because in its active state the activator protein turns on transcription of the operon under its control. the lac operon of E. coli repressor(lac repressor) is synthesized through the activity of the gene lac I, known as regulator gene. the active form of the lac repressor, is a tetramer that contains four copies of the gene I product. in the absence of the inducer, the repressor binds to the lac operator sequence, preventing RNA polymerase from binding to the promoter and transcribing the structural genes. thus the lac operon is negatively regulated associated with the lac operon, there is another site, 16 base pairs upstream of the promoter, which is used for a positive control of the gene expression. this site is called catabolic activator protein site or cyclic AMP(cAMP) protein site or catabolite gene activator(cga) site, because it is utilized for binding of CAP or cga to stimulate gene expression. CAP can bind to this site only when it is bound with cAMP. by binding to it, the CAP-cAMP complex exerts a positive control over the transcription process. it has an effect exactly opposite to that of repressor binding to an operator. yhe effector molecule cAMP determines the effect of CAP on lac operon transcription. presence of glucose inhibits the formation of cAMP and prevents it to bind to CAP
What is the term for the state of a protein when the organized structures of that protein become completely disorgainzed?
Denaturation
What is an oligomeric state?
The state at which a multi subunit protein containing two or more of the same subunit has folded and conformed to its native state
What period are is when protein production is high?
Please state your question in structured English.
Briefly state the functions what cytoplasm?
Ribosome plays a vital role in protein synthesis as they consist of protein and RNA. The most important function of the mitochondria is to produce energy.
Describe how E. coli uses the negative and positive control of the lac operon to economize on RNA and protein synthesis?
if a regulatory protein in its active state turns off the expression of the operon, the operon is said to be negatively regulated by the regulatory protein. if the regulatory protein in its active state truns on the operon, the operon is positively regulated by the regulatory protein. an operon regulated by a repressor is therefore negatively regulated, because the presence of the active repressor prevents transcription of that operon. in contrast, an operon regulated by an activator is positively regulated, because in its active state the activator protein turns on transcription of the operon under its control. the lac operon of E. coli repressor(lac repressor) is synthesized through the activity of the gene lac I, known as regulator gene. the active form of the lac repressor, is a tetramer that contains four copies of the gene I product. in the absence of the inducer, the repressor binds to the lac operator sequence, preventing RNA polymerase from binding to the promoter and transcribing the structural genes. thus the lac operon is negatively regulated associated with the lac operon, there is another site, 16 base pairs upstream of the promoter, which is used for a positive control of the gene expression. this site is called catabolic activator protein site or cyclic AMP(cAMP) protein site or catabolite gene activator(cga) site, because it is utilized for binding of CAP or cga to stimulate gene expression. CAP can bind to this site only when it is bound with cAMP. by binding to it, the CAP-cAMP complex exerts a positive control over the transcription process. it has an effect exactly opposite to that of repressor binding to an operator. yhe effector molecule cAMP determines the effect of CAP on lac operon transcription. presence of glucose inhibits the formation of cAMP and prevents it to bind to CAP
What is an act or state of absent minded daydreaming?
To be in an act or state of absent-minded daydreaming is to be in a reverie.
What was Absent state at the convention of 1787?
Rhode Island was absent from the Constitutional Convention of 1787
Who will be absent during the 2012 State of the Union address?
Secretary of state
Who will be absent from state of union tonight?
Secty of Interior Ken Salezar
What is the definition of 'protein coagulation'?
Protein coagulation is the reaction in which a protein changes from a liquid state to a semi-solid or solid state in the presence of heat, pressure or chemicals.
Can grandparents be rquired to pay child support in the state of MD if the absent parent is in jail?
No.
What does culture of peace means?
Tahe state of absent of war; an environment where peace is exhibited.
What cabinet member is absent in 2012 state of the union address?
Tom Vislack secretary of agriculture :)
How do you spell abcscence?
The correct spelling of the noun is absence (state of non-attendance). The adjective is absent.
What is the term for the state of a protein when the organized structures of that protein become completely disorgainzed?
Denaturation
Can you collect child support if the absent parent collects ssi?
No, you can not collect child support if the absent parent collects ssi. No matter what state you are in, anywhere in the united states. It's against the law!
