NotesFAQContact Us
Search Tips
Peer reviewed Peer reviewed
Direct linkDirect link
ERIC Number: EJ1148233
Record Type: Journal
Publication Date: 2017
Pages: 11
Abstractor: As Provided
ISSN: ISSN-0021-9266
Different Cells Make Different Proteins: A Laboratory Exercise Illustrating Tissue-Specific Protein Expression in Animals
Ibarguren, Izaskun; VillamarĂ­n, Antonio
Journal of Biological Education, v51 n3 p284-294 2017
All the cells of higher organisms have the same DNA but not the same proteins. Each type of specialised cell that forms a tissue has its own pattern of gene expression and, consequently, it contains a particular set of proteins that determine its function. Here, we describe a laboratory exercise addressed to undergraduate students that aims to reinforce the following concept: what makes cells different is they make different proteins. The students performed a denaturing polyacrylamide gel electrophoresis (SDS-PAGE) to separate the proteins extracted from different animal tissues, and then obtained and compared the corresponding protein profiles. In addition, the students performed a Western blot analysis to detect the presence or absence of a tissue-specific protein in the different tissue extracts. This laboratory exercise allowed students to understand the basis of the cell differentiation better and also provided them the opportunity to learn a variety of analytical laboratory techniques.
Routledge. Available from: Taylor & Francis, Ltd. 530 Walnut Street Suite 850, Philadelphia, PA 19106. Tel: 800-354-1420; Tel: 215-625-8900; Fax: 215-207-0050; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A