A mutant E. coli strain is found that synthesizes B-galactosidase and permease but no B-galactoside-transacetylase in...
the answer I gave was wrong A mutant E. coli strain is found that synthesizes B-galactosidase whether or not lactose (or allolactose) is present. What mutations can independently lead to this outcome? The lac operon is shown here as a guide. zones where proteins bind DNA: genes and regulatory sequences lac 1 operator promoter -35 lac z lac Y lac A JOSSA expression Lac repressor B-galactosidase B-galactoside- transacetylase proteins permease Lac Z Lac A promoter operator laci Lac Y
on strain is found that synthesizes B-galactosidase and permease but no B-galactoside-transacetylase in the presence of lactose (or allolactose). What mutation(s) can lead to this outcome? The lac operon is shown here as a guide. Tones where proteins bind promoter DNA genes and regulatory sequences 100 mm n galactosidase proteins B-galacto de branscetylave perman Lac A promoter Lacz Lac! Operator Lacy
help please as soon as possible A mutant E. coli strain is found that does not synthesize any enzymes in the presence or absence of lactose (or allolactose). W mutation(s) can lead to this outcome? The lac operon is shown here as a guide. fones where proteins bind DNA genes and regulatory sequences Operator La repressor B-galactosidase B-galactos de transactylase proteins promoter Operator Lacy Lac A laci o Lacz
The lac operon contains three genes: lacZ, lacY, and lacA for β‑galactosidase, galactoside permease, and thiogalactoside transacetylase, respectively. The operon also contains a promoter site and an operator site. The regulatory gene includes the I gene for the Lac repressor protein and a promoter for that gene.The lac operon undergoes negative regulation. In the normal condition, the Lac repressor protein is active. Allolactose, an isomer of lactose, is the signal molecule that binds to the Lac repressor. Determine which events...
D Question 21 A mutant E.coli strain is found that synthesizes 8-galactosidase and permease but no B-galactoside-transcetylase in the presence of lactose for lactose. What mutations can lead to this outcome! The lac operon is shown here as a guide DNA and regulatory sequences promoter Z Orto • Previous
20862a a A mutant E. coli strain is found that does not synthesize any enzymes in the presence or absence of lactose for allolactose). What mutation(s) can lead to this outcome? The lac operon is shown here as a guide. ones where proteins bind DNA genes and regulatory sequences och Operator o Lacy o Lacz o Laca promoter MacBook Air * जीप
Lac Promoter i promoter galactoside transacetylase gene E coll chromosome lac operon loc terminator regulatory gene Operator site (laco) CAP site Lactose permease gene Beta-galactosidase gene
which operon will make b-galactosidase even if lactose isn't present? p+ o+ lacZ+ lacI- p- Oc lacZ+ lacI- p+ Oc lacZ- lacI+ p- o+ lacZ+ lacI+ p+ o+ lacZ+ lacI+ Oc = fails to bind R regulatory promoter operator gene structural genes lacz lacY lacA β-galactosidase thiogalactoside transacetylase lactose permease
A number of mutations affect the expression of the lactose operon in E. coir. I^- a mutant lac repressor that cannot bind the lac operator I^s a mutant lac repressor that cannot bind lactose O^c a mutant lac operator that cannot bind repressor Lacl P^- a mutant lac promoter that cannot bind RNA polymerase Z^- a mutant lacZ lost beta-galactosidase activity Y^- a mutant permease that cannot transport lactose into the cell Consider the following strains each with the indicated...
for 1-5 define those The Lac operon is an inducible set of genes found in bacteria cells that helps the bacteria to metabolize the disaccharide lactose. When it is turned on it produces proteins that pump lactose into the bacteria cell and break it down into glucose and galactose, which can then be used by the bacteria as a source of energy The two figures below show the Lac Operon along with the lacl gene (which regulates the Lac operon...