If you have the same protein loaded in two different lanes of an SDS-PAGE stained with Coomasie blue, and one lane has a darker, thicker band of protein than the other lane, can you say that there is more protein in the lane with the darker band? Why or why not?
If you have the same protein loaded in two different lanes of an SDS-PAGE stained with Coomasie blue, and one lane has a darker, thicker band of protein than the other lane, can you say that there is more protein in the lane with the darker band? Why or why not?
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter14: Dna Structure And Replication
Section14.1: Establishing Dna As The Hereditary Molecule
Problem 1SB
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If you have the same protein loaded in two different lanes of an SDS-PAGE stained with Coomasie blue, and one lane has a darker, thicker band of protein than the other lane, can you say that there is more protein in the lane with the darker band? Why or why not?
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Step 1
SDS-PAGE stands for sodium dodecyl sulfate-polyacrylamide gel which is an analytical technique used for the separation of the proteins on the basis of difference in their molecular weight. The gel acts as a mesh from which proteins move in response to the electric field. The smaller proteins migrate faster due to less resistance whereas large-sized proteins move slowly across the gel matrix.
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