Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 12, Problem 12.11PS
What’s Happening? Researchers have discovered a group of plant proteins that are related to the exocyst proteins in yeast [Plant Cell 20 (2008): 1330]. Explain how the following observations made by these researchers suggest that these plant proteins form a tethering complex similar to the exocyst complex of yeast and mammals.
(a) Following size fractionation of plant protein extracts, antibodies recognizing each of several different plant exocyst proteins bind to the same high-molecular-weight protein fraction.
(b) Mutations in four of the proteins each causes defective pollen germination.
(c) Plants lacking more than one of these proteins have more serious defects in pollen germination than plants lacking only one.
(d) The exocyst proteins all colocalize at the growing tip of elongating pollen cells.
(e) Pollen cells of plants with mutations in exocyst genes are defective in tip growth or germinating pollen cells.
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Chapter 12 Solutions
Becker's World of the Cell (9th Edition)
Ch. 12 - How do differences in the structure and...Ch. 12 - Why is it necessary for material flowing through...Ch. 12 - What problems would you likely see in cells...Ch. 12 - What features of membrane lipids and proteins...Ch. 12 - Based on what you learned in this chapter about...Ch. 12 - How would an inhibitor of membrane fusion...Ch. 12 - What intracellular transport processes would you...Ch. 12 - What problems would a cell have if it could not...Ch. 12 - Although the plant vacuole resembles the lysosome...Ch. 12 - Why is it important for the biochemical reactions...
Ch. 12 - Compartmentalization of Function. Each of the...Ch. 12 - Endoplasmic Reticulum. For each of the following...Ch. 12 - Biosynthesis of Integral Membrane Proteins. In...Ch. 12 - Coated Vesicles in Intracellular Transport. For...Ch. 12 - QUANTITATIVE Interpreting Data. Each of the...Ch. 12 - Cellular Digestion. For each of the following...Ch. 12 - QUANTITATIVE Virus Entry by Endocytosis....Ch. 12 - Prob. 12.8PSCh. 12 - Sorting Proteins. Specific structural features tag...Ch. 12 - Prob. 12.10PSCh. 12 - Whats Happening? Researchers have discovered a...
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