ERIC Number: EJ1074532
Record Type: Journal
Publication Date: 2015
Abstractor: As Provided
Reference Count: N/A
A Streamlined Western Blot Exercise: An Efficient and Greener Approach in the Laboratory Classroom
Ness, Traci L.; Robinson, Rebekah L.; Mojadedi, Wais; Peavy, Lydia; Weiland, Mitch H.
Biochemistry and Molecular Biology Education, v43 n5 p358-365 Sep-Oct 2015
SDS-PAGE and western blotting are two commonly taught protein detection techniques in biochemistry and molecular biology laboratory classrooms. A pitfall associated with incorporating these techniques into the laboratory is the significant wait times that do not allow students to obtain timely results. The waiting associated with SDS-PAGE comes from staining and destaining, whereas with western blotting it is the times required for antibody incubations and the numerous wash steps. This laboratory exercise incorporates 2,2,2-trichloroethanol (TCE) into the SDS-PAGE gel allowing for visualization of migrated proteins in a matter of minutes, saving both the time and chemical waste associated with traditional Coomassie staining. Additionally, TCE staining does not affect protein transfer eliminating the requirement for duplicated gels for total protein and western analyses. Protein transfer can be confirmed immediately without the use of Ponceau S staining. Lastly, this western blot procedure has been further shortened by using an HRP-conjugated primary antibody, which eliminates the secondary antibody incubation and washes, and uses a colorimetric detection to allow for visualization by students without the need for specialized equipment.
Descriptors: Biochemistry, Molecular Biology, Science Laboratories, Teaching Methods, Visualization, Science Instruction
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Sponsor: National Science Foundation (NSF)
Authoring Institution: N/A
IES Grant or Contract Numbers: DUE-0856593