The following protocol describes a method to excise protein bands from 1-D and 2-D gels, stained with either Coomassie brilliant blue or silver, for identification by mass spectrometry analysis. Liquid samples are acceptable and should be kept frozen and shippped on dry ice.
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The following protocol describes a method to excise protein bands from 1-D and 2-D gels, stained with either Coomassie brilliant blue or silver, for identification by mass spectrometry analysis. Liquid samples are acceptable and should be kept frozen and shippped on dry ice.
Steps:
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Gloves must be worn at all times to minimize contamination from keratins and improve sample identification. If possible, proteins should be excised in a laminar flow hood.
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Prewash 1.5 mL microcentrifuge tubes that will be used for sample submission with 95% ethanol and air-dry prior to use.
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With a clean razor blade, excise the protein band or spot of interest only. For addional bands or spots the razor blade can be cleaned by washing repeatedly with methanol and water.
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Alternatively, excise three plugs per band using a syringe with blunt needle (1.7 mm ID) or blunted pipettor tip. Avoid capturing any surrounding non-stained polyacrylamide.
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Gel bands should be excised into 2 to 3 cubes.
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Place all pieces corresponding to the one band into a 1.5-mL microcentrifuge tube and add enough 1% acetic acid to cover the gel slice(s).
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Snap lid onto microcentrifuge tube firmly and wrap with parafilm.
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Store samples at -20°C until pick up or delivery.
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Complete On-line Sample Submission Form or download printable PDF HERE to complete and submit with samples.
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Our shipping address is:
Custom Biologics
1 Marmac Dr.
Toronto, ON. Canada
M9W 1E7
.
ORDER INFORMATION:
Researcher:
Your Email:
Principal Investigator:
Address (Hospital/Institute/University)
:
Dept/Floor/Room# :
Telelephone Number:
Fax Number:
BILLING
INFORMATION:
Bill To :
Address:
Cost Ctr / P.O.# :
Please fill
in all applicable columns per submitted sampleComments
/ Special Instructions:
Samples
are picked up every morning from 10am-12pm. Please call the
day before to ensure your sample(s) are received in a timely
manner. A separate
report for each submitted sample will be sent to your email
address within four (4) business days.
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