Identifying Proteins and Amino Acids - Student Laboratory Kit
by Flinn Scientific
Item #: AP1769
In the Identifying Proteins and Amino Acids Laboratory Kit for biochemistry, compare the activity of three common proteins Using the biuret test to identify the peptide linkage and its role in protein structure.
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The numbers are staggering! Starting with only about 20 different naturally occurring amino acids, a single cell may synthesize more than 3,000 different types of proteins. How do amino acids link together to build a protein? What role do amino acids play in the function of a protein? In this exploratory activity, students compare the behavior of three common proteins—albumin, casein, and gelatin—using the biuret test to identify the peptide linkage and its role in protein structure. Students then perform a series of chemical tests to detect the presence of three amino acids—arginine, cysteine, and tyrosine. By studying the distribution of different amino acids in proteins, students learn how hydrophobic and hydrophilic amino acid side chains stabilize proteins and contribute to their special properties. Includes reproducible student handouts, detailed background information, Teacher Notes with sample data and answers to all questions, and all necessary chemicals and consumable supplies. Complete for 30 students working in pairs. Perform this experiment in a fume hood or well-ventilated lab.