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what is the pattern of expression of β-galactosidase in laci— cells and why?
Chapter 17 Flashcards | Quizlet
β-Galactosidase is an exoglycosidase which hydrolyzes the β-glycosidic bond formed between a galactose and its organic moiety. It may also cleave fucosides and arabinosides but with much lower efficiency. It is an essential enzyme in the human body. Deficiencies in the protein can result in galactosialidosis or Morquio B syndrome. In E. coli, the lacZ gene is the structural gene for β-galactosidase; which is present as part of the inducible system lac operon which is activated in th…
Chapter 17 Gene Regulation Flashcards | Quizlet
Web Sep 25, 2012 · Abstract. This review provides an overview of the structure, function, and catalytic mechanism of lacZ β-galactosidase. The protein played a central role in Jacob …
Structural Explanation For Allolactose (lac Operon Inducer) Synthesis
Web May 3, 2013 · It hydrolyzes lactose to galactose and glucose and catalyzes the intramolecular isomerization of lactose to allolactose, the lac operon inducer. β …
13 - The Lac Operon - Brigham Young University–Idaho
Web LacZ encodes an enzyme called β-galactosidase, which digests lactose into its two constituent sugars: glucose and galactose. lacY is a permease that helps to transfer lactose into the cell. Finally, lacA is a trans …
12.1: The Lac Operon - Biology LibreTexts
Web Dec 1, 2016 · In this study, we showed that β-galactosidase that was ectopically expressed from a transgene possesses an enzymatic activity in non-fixed tissues, which means that …
13 - The Lac Operon - Brigham Young University–Idaho
Web Beta (β)-galactosidase. β-galactosidase cleaves the lactose imported by lactose permease, producing the monosaccharides galactose and glucose. Galactose and …
REGULATION OF GENE EXPRESSION Flashcards | Quizlet
Web J. Bacteriol. 89:937-942. 1965.-Synthesis of beta-galactosidase by several strains of Streptococcus lactis was induced by lactose. The rate of hydrolysis of o-nitrophenyl-beta …
What is lacZ -galactosidase?
How does beta ()-galactosidase metabolize lactose?
What happens when lactose is bound to Laci?
Which enzyme converts lactose into glucose and galactose?
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