Abstract Proteins are the work horse of a biological system, performing all of the biochemical functions necessary to maintain cellular metabolism, architecture and growth. Different tissues are made up of certain cell types that each have a unique population of proteins that make up the cellular environment. Because of this, different cell types have a unique protein profile, or fingerprint. You can use a protein profile to compare different cell types, cells before and after a treatment or similar cell types from different species. Try using the Comparative Proteomics Kit I: Protein Profiler Module (Catalog #166-2700EDU) from the Bio-Rad Biotechnology Explorer Program. With this kit you can purify protein extract from different tissue sources, run the protein out on a gel, and compare the banding patterns of prominent cellular proteins between your samples. You can follow the kit instructions to examine muscle proteins purified from different fish species. Can you identify similarities and differences in these organisms' protein profiles, or fingerprints? Which species have the most similar muscle protein profile? Compare the fish protein profiles against an evolutionary tree. Do the data agree? What explanations can you suggest? You can also try this kit on muscle from other species, which you can buy at the grocery store. Use lean cuts of beef, pork, chicken, or lamb. Another idea is to compare the protein profiles of different parts of the body, like chicken muscle, chicken heart, chicken liver, egg white. Do the different cell types have similar or different protein profiles? A further idea would be to use the kit to investigate if the protein profile of a tissue source changes after being treated with some type of chemical or biochemical compound. (Bio-Rad, 2006)Bibliography Bio-Rad, 2006. "Biotechnology Explorer Program," Bio-Rad Laboratories [accessed 3/25/06] http://explorer.bio-rad.com.Materials and Equipment Note: Bio-Rad Kits are sold directly to schools. To purchase, please have your school contact Bio-Rad at 800-424-6723 to verify account information and to place the order for you. Existing accounts will have orders processed within a day, and establishing an account will take approximately 48 hours.Variations
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If you like this project, you might enjoy exploring related careers.
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Biochemist Growing, aging, digesting—all of these are examples of chemical processes performed by living organisms. Biochemists study how these types of chemical actions happen in cells and tissues, and monitor what effects new substances, like food additives and medicines, have on living organisms. |
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Biological Technician What do the sequencing of the human genome, the annual production of millions of units of life-saving vaccines, and the creation of new drought-tolerant rice varieties have in common? They were all accomplished through the hard work of biological technicians. Scientists may come up with the overarching plans, but the day-to-day labor behind biotech advances is often the work of skilled biological technicians. | |
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Medical & Clinical Laboratory Technician Doctor's need information to decide if a person is healthy or sick, if a baby's earache is bacterial or viral, or if the man next door needs medication to lower his cholesterol and prevent a heart attack. The information often comes in the form of results from lab tests. Medical and clinical laboratory technicians are the people who perform these routine medical laboratory tests, giving the doctors the information needed to diagnose, treat, and prevent disease. |
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Cytotechnologist When a patient gets sick, his or her doctor will take sample cells from the affected part of his or her body and send them to a lab for testing to figure out what is wrong. This is where the cytotechnologist steps in. The cytotechnologist will take the sample cells, make slides from them, and examine the slides under a microscope. Cytotechnologists are trained to detect abnormalities in cells that come from all body sites in order to to make a diagnosis of cancer or other diseases. These professionals help pathologists and doctors diagnose diseases early, thus saving lives. | |
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