User:Alicia Rasines Mazo/Notebook/CHEM-571 Experimental Biological Chemistry/2014/10/28: Difference between revisions
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===0.6 g/L lysozyme vs CaCl<sub>2</sub> using 3500 MWCO dialysis data=== | ===0.6 g/L lysozyme vs CaCl<sub>2</sub> using 3500 MWCO dialysis data=== | ||
<u>Bradford Analysis</u> | |||
*Only running bradford analysis of protein-containing solutions, that is Lys 1, 2, 3, 4 and 5, since the protein cannot diffuse through 3500 MWCO. | |||
* Remove 50 μL of solution from each chamber (7 in all) and run Bradford analysis | |||
**Bradford reagent should be diluted 1:3 with 50mM Tris/50mM NaCl | |||
**Recall, 50 μL solution + 200 μL diluted Bradford + 750 μL Tris/NaCl buffer | |||
**PS cuvettes, measuring 400 - 800 nm | |||
<u>Ca2+ ISE</u> | <u>Ca2+ ISE</u> | ||
{| {{table}} | {| {{table}} | ||
Line 34: | Line 40: | ||
| align="center" style="background:#f0f0f0;"|'''mV measurement (mV)''' | | align="center" style="background:#f0f0f0;"|'''mV measurement (mV)''' | ||
|- | |- | ||
| 5μM (1) || | | 5μM (1) || 11.8 | ||
|- | |- | ||
| Lys (1) || | | Lys (1) || 4.6 | ||
|- | |- | ||
| 50μM (2) || | | 50μM (2) || 4.2 | ||
|- | |- | ||
| Lys (2) || | | Lys (2) || 0.1 | ||
|- | |- | ||
| 500μM (3) || | | 500μM (3) || 27.4 | ||
|- | |- | ||
| Lys (3) || | | Lys (3) || 24.4 | ||
|- | |- | ||
| 5mM (4) || | | 5mM (4) || 52.1 | ||
|- | |- | ||
| Lys (4) || | | Lys (4) || 51.3 | ||
|- | |- | ||
| 50mM (5)|| | | 50mM (5)|| 77.3 | ||
|- | |- | ||
| Lys (5) || | | Lys (5) || 77.0 | ||
|- | |- | ||
|} | |} | ||
<u>UV-Vis Absorption</u> | |||
<u>UV-Vis Absorption</u> <br.> | |||
Transfer 100 μL of 100:1 diluted dialysed lysozume to a small volume UV cuvette & measure UV absorption | |||
**Be sure your cuvette is clean before hand. Use SDS, HCl, HPLC, & methanol washes | |||
**Measured entire 200 - 800 nm range. (Care about peak at 280 nm. Need to compare to fluorescence data to see how the binding is affected) | |||
<u>Fluorescence</u> | |||
<u>Fluorescence</u> | |||
*Measured fluorescence of dyalised solutions | |||
*Fluorescence (glass microcuvette & 100 fold diluted) for all protein solutions | |||
**10μL of lysozyme were diluted to 1mL by adding HPLC. (Remember to account for dilution factor later on) | |||
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Revision as of 12:10, 29 October 2014
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Tasks for October 28
I- ISE
0.6 g/L lysozyme vs CaCl2 using 3500 MWCO dialysis dataBradford Analysis
Ca2+ ISE
UV-Vis Absorption UV-Vis Absorption <br.> Transfer 100 μL of 100:1 diluted dialysed lysozume to a small volume UV cuvette & measure UV absorption
Fluorescence Fluorescence
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