This kit allows students to review the relationship between DNA sequence, RNA sequence, and protein sequence as they explore the insulin gene in a guided-inquiry exercise. In this exercise, students can:
- Explore the arrangement of the pre-signal (for docking the ribosome onto the endoplasmic reticulum), the B chain, the C peptide (which is later removed) and A chain. Students can also identify the cysteine sidechains that form the disulfide bonds that stabilize the final, mature structure.
- Because the ultimate annotation of a nucleotide sequence is a physical model of the protein it encodes, students use a protein folding map and Mini-Toobers to build a three-dimensional model of insulin, demonstrating disulfide bonds, a salt bridge, internal hydrophobic residues, as well as a number of sidechains that, when mutated, lead to proteins that don't function properly.
Models in this Collection
- 6 insulin models (PDB: 2hiu)
- α-carbon backbone
- Cysteine sidechains involved in disulfide bonds displayed in ball and stick
- A chain: cys6, cys7, cys11, cys20
- B chain: cys7, cys19
- 6 Insulin Posters
- 6 Student Insulin mRNA Maps
- 1 Teacher Insulin mRNA Map
- 6 Insulin Mini-Toober Folding Map
- 6 Insulin Mini-Toober Folding Kits
Requesting this Model
Loan Time Frame: 3 weeks
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- Use the calendar below to select a three week loan. Available times are shown in green. Select the date you want to pick-up the model. After selecting your time period, select checkout and complete the booking details.
Requesting Other Models
You may schedule one copy of a model for three weeks. Due to limited resources, we are unable to send multiple copies or additional materials.
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Please contact us at firstname.lastname@example.org with any questions about the lending process or the availability of models.
Contact Margaret Franzen at email@example.com or (414) 277-2824 with questions about the models, teaching resources or educational content.