QUESTION 6 A series of experiments were performed in Neurospora crassa in order to define the tryptophan biosynthesis pathway. In one of these experiments, five tryptophan auxotrophs were isolated and tested for growth on tryptophan and five other known intermediates in the tryptophan biosynthesis pathway. The growth responses are shown below: Growth on Anthranilic Acid (AA) Growth on Indole Growth on Indole Glycerol Phosphate (IGP) Growth on Chorismic Acid (CA) Growth on N- Anthranilate (NA) Growth on Tryptophan Mutants: trp-1 trp-2 + + trp-3 + trp-4 + + + trp-5 + + + - + + + + + + Using the growth data in the above table, indicate the precursor (molecule that you start with) and the order of the intermediates in this pathway (please use exact spelling or abbreviation). Rxnl Rxn2 Rxn3 Rxn5 Tryptophan Rxn4 Indicate the mutant that is associated with the enzyme that catalyzes the reactions for tryptophan biosynthesis using the data given in the above table. Rxn1: Rxn2: Rxn3: Rxn4: Rxn5:
QUESTION 6 A series of experiments were performed in Neurospora crassa in order to define the tryptophan biosynthesis pathway. In one of these experiments, five tryptophan auxotrophs were isolated and tested for growth on tryptophan and five other known intermediates in the tryptophan biosynthesis pathway. The growth responses are shown below: Growth on Anthranilic Acid (AA) Growth on Indole Growth on Indole Glycerol Phosphate (IGP) Growth on Chorismic Acid (CA) Growth on N- Anthranilate (NA) Growth on Tryptophan Mutants: trp-1 trp-2 + + trp-3 + trp-4 + + + trp-5 + + + - + + + + + + Using the growth data in the above table, indicate the precursor (molecule that you start with) and the order of the intermediates in this pathway (please use exact spelling or abbreviation). Rxnl Rxn2 Rxn3 Rxn5 Tryptophan Rxn4 Indicate the mutant that is associated with the enzyme that catalyzes the reactions for tryptophan biosynthesis using the data given in the above table. Rxn1: Rxn2: Rxn3: Rxn4: Rxn5:
Biology 2e
2nd Edition
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter30: Plant Form And Physiology
Section: Chapter Questions
Problem 42CTQ: Fruit and vegetable storage facilities are usually refrigerated and well ventilated. Why are these...
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