Santa Cruz Immunoprecipitation投诉表

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TECHNICAL SERVICE GUIDE: IMMUNOPRECIPITATION

            Catalog #:                 Lot #:

              A. Problem and Previous Experience

             1. What is the specific problem you are experiencing?

2. Did this same vial of product work in the past? What were the results?

3. Did other lots of this product work in the past? Which lots? What were the results?

B. Samples

1. From which species （animal） was the sample and what type was used （cell lysate, tissue,

purified protein, etc.）? What lysis buffer was used?

2. How many cells were lysed or what was the protein concentration and volume of the sample that was used in the immunoprecipitation?

C. Pre-Clearing

1. Was a pre-clear step done prior to adding primary antibody?

2. What species of immunoglobulin （rabbit, goat, etc.） was used for the pre-clear step?

3. What protein agarose-conjugate was used in the pre-clear step （Protein-A, Protein-G Agarose, etc.）?

D. Antibodies and Immunoprecipitation Reagents

1. How many micrograms of primary antibody were added to the total cell lysate?

2. Was the primary antibody directly conjugated to agarose?

3. How long was the primary incubated with the total cell lysate?

4. What immunoprecipitation reagent was used （Protein-A Agarose, Protein-G Agarose, etc.）?

5. At what temperature has the primary antibody been stored? Has it ever been frozen?

E. Washes and Spins

1. Is the final wash done with a stringent reagent （RIPA） or a mild reagent （PBS）?

2. How fast were the samples spun （in RPM）?

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