Description
Description
Can you discover the conditions that affect the rate of enzyme catalyzed reactions? …And make them glow!
This lab allows students to investigate enzyme activity and the conditions that affect it. Under optimal conditions enzymes catalyze, or speed up the rate of, chemical reactions. In this lab, a substrate that is not fluorescent under basal conditions, will fluoresce under blue light when sugar molecules are removed through hydrolysis by the enzyme beta-galactosidase. Observing how brightly the solution fluoresces over time allows students to observe the reaction progress, and to quantify the effect of different factors on enzyme efficiency.
Learn more via this Youtube Video
This Lab isstructured as four inquiry-based investigations. In each investigation, students explore the effect of a different factor on enzyme reaction rate:
- pH
- temperature
- enzyme and substrate concentration
- competitive inhibition.
This lab provides enough reagents for eight lab groups to each pursue at least two of these investigations (32 students):
- Substrate for enzymatic reaction
- Purified Beta-Galactosidase enzyme solution
- Dilution buffers (2)
- Inhibitor solutions (2)
- Alkaline medium
- Fluorescent solution for standard curve
- This activity is compatible with blueGel™, blueBox, P51™, or other blue light transilluminator
systems
Required equipment (one per lab group):
- Blue light transilluminator (such as blueBox™ or blueGel™) or P51™ Molecular Viewer
- Suggested for temperature investigations: miniPCR™ thermal cycler (ideal set up) or water bath and floaties, iced water.
Lab summary:
- Techniques utilized: Micropipetting, fluorescence detection of enzyme activity.
- Time required: can be completed in one 45 min. class period, or extended into two 45-min periods or a single block.
- Reagents needed: P51 Enzyme Lab: β-Gal Glow™ (this product).
- Suggested skill level: Familiarity with protein structure and enzyme activity, from middle school to college.
Storage notes:
- These reagents require refrigerated storage.
- Shelf-life: 6 months when stored at 4 degrees.
Free miniPCR Learning Lab™ downloads:
- Beta-Gal Glow Instructor’s Guide
- Beta-Gal Glow Student’s Guide
- Beta-Gal Glow Classroom Slides
P51™ Molecular Fluorescence Viewer
Description
A COMPLETELY NEW APPROACH TO STUDYING MOLECULES.
Through hands-on investigations, students explore the building blocks of life.
MAKE BIOLOGY GLOW™. IN YOUR HANDS.
- Base pairing
- Catalytic rates
- Energy capture
- Gene expression
- Transcription and translation
- Cell biology
GO BEYOND MODELS: DYNAMIC HANDS-ON INVESTIGATIONS
- Adaptive curriculum from middle school to college: P51™ Molecular Glow Labs
- For example, investigate DNA structure to observe and measure:
- Base pairing
- Melting temperatures
- Effects of pH, etc.
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