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
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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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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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