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Recombinant Human Active PIM1 Protein, CF

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The approximate molecular weight is 62 kDa and the average purity is 90%.

Product Details

Summary
Reactivity HuSpecies Glossary
Applications Bioactivity
Format
Carrier-Free

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Recombinant Human Active PIM1 Protein, CF Summary

Details of Functionality
The specific activity of PIM1 is typically 269-363 nmol/min/mg using a synthetic peptide substrate.
Source
Spodoptera frugiperda, Sf 9 (baculovirus)-derived human PIM1 protein
Accession #
N-terminal Sequence
Using an N-terminal GST tag
Protein/Peptide Type
Recombinant Proteins
Gene
PIM1
Purity
>90%, by SDS-PAGE under reducing conditions and visualized by Colloidal Coomassie® Blue stain at 5 μg per lane.

Applications/Dilutions

Dilutions
  • Bioactivity
SDS-PAGE
62 kDa

Packaging, Storage & Formulations

Storage
This product is stable at ≤ ‑70 °C for up to 1 year from the date of receipt. For optimal storage, aliquot into smaller quantities after centrifugation and store at recommended temperature. Avoid repeated freeze-thaw cycles.
Buffer
Supplied in 50 mM Tris-HCl, pH 7.5, 150 mM NaCl, 10 mM Glutathione, 0.1 mM EDTA, 0.25 mM DTT, 0.1 mM PMSF, and 25% Glycerol.
Purity
>90%, by SDS-PAGE under reducing conditions and visualized by Colloidal Coomassie® Blue stain at 5 μg per lane.
Assay Procedure
  • Active Kinase - Active PIM1 (0.1 μg/μL) diluted with Kinase Dilution Buffer III to the concentrations indicated in Figure 2. Note: These are suggested working dilutions. Optimal dilutions should be determined by each laboratory for each application.
  • Kinase Assay Buffer I - 25 mM MOPS, pH 7.2, 12.5 mM beta -glycerolphosphate, 25 mM MgCl2, 5 mM EGTA, 2 mM EDTA. Add 0.25 mM DTT to the Kinase Assay Buffer prior to use.
  • Kinase Dilution Buffer III - Kinase Assay Buffer I diluted at a 1:4 ratio (5X dilution) with 50 ng/μL BSA solution.
  • 10 mM ATP Stock Solution - Prepare the ATP Stock Solution by dissolving 55 mg of ATP in 10 mL of Kinase Assay Buffer I. Store 200 μL aliquots at ≤ -20 °C.
  • [33P]-ATP Assay Cocktail - Prepare 250 μM [33P]-ATP Assay Cocktail in a designated radioactive work area by combining 150 μL of 10 mM ATP Stock Solution, 100 μL of [33P]-ATP (1 mCi/100 μL), and 5.75 mL of Kinase Assay Buffer I. Store 1 mL aliquots at ≤ -20 °C.
  • Substrate - S6K synthetic peptide substrate (KRRRLASLR) diluted in distilled or deionized water to a final concentration of 1 mg/mL.
  1. Thaw the [33P]-ATP Assay Cocktail in a shielded container in a designated radioactive work area.
  2. Thaw the Active PIM1, Kinase Assay Buffer I, Substrate, and Kinase Dilution Buffer III on ice.
  3. In a pre-cooled microfuge tube, add the following reaction components bringing the initial reaction volume up to 20 μL:
    a. Diluted Active PIM1: 10 μL
    b. Stock solution of Substrate (1 mg/mL): 5 μL
    c. Distilled water (2-8 °C): 5 μL
  4. Set up the blank control as outlined in Step 3, excluding the addition of the substrate. Replace the substrate with an equal volume of distilled or deionized water.
  5. Initiate the reaction with the addition of 5 μL [33P]-ATP Assay Cocktail, bringing the final volume up to 25 μL. Incubate the mixture in a water bath at 30 °C for 15 minutes.
  6. After the 15 minute incubation, terminate the reaction by spotting 20 μL of the reaction mixture onto individual pre-cut strips of phosphocellulose P81 paper.
  7. Air dry the pre-cut P81 strip and sequentially wash in a 1% phosphoric acid solution (add 10 mL of phosphoric acid to 990 mL of distilled or deionized water) with constant gentle stirring. It is recommended that the strips be washed a total of three times for approximately 10 minutes each.
  8. Count the radioactivity (cpm) on the P81 paper in the presence of scintillation fluid in a scintillation counter.
  9. Determine the corrected cpm by subtracting the blank control value (see Step 4) for each sample and calculate the kinase specific activity as outlined below.


    Calculation of [33P]-ATP Specific Activity (SA) (cpm/pmol)
    Specific Activity (SA) = cpm for 5 μL [33P]-ATP/pmol of ATP (in 5 μL of a 250 μM ATP stock solution; i.e. 1250 pmol)

    Calculation of Kinase Specific Activity (SA) (pmol/minutes/μg or nmol/minutes/mg)
    Corrected cpm from reaction / [(SA of 33P-ATP in cpm/pmol) x (Reaction time in minutes) x (Enzyme amount in μg or mg)] x [(Reaction volume) / (Spot Volume)]

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Human Active PIM1 Protein, CF

  • EC 2.7.11.1
  • Oncogene PIM1
  • PIM
  • pim-1 kinase 44 kDa isoform
  • pim-1 oncogene (proviral integration site 1)
  • pim-1 oncogene
  • PIM1
  • proto-oncogene serine/threonine-protein kinase pim-1

Background

PIM1 is a proto-oncogene that belongs to a family of Ser/Thr protein kinases that are highly conserved through evolution in multicellular organisms. Originally identified from Moloney murine leukemia virus induced T cell lymphomas in mice, PIM1 is involved in the control of cytokine-mediated cell proliferation, differentiation, and survival of lymphoid and myeloid cells as well as others (1). Expression of PIM1 can be stimulated by a variety of growth factors and is regulated at four different levels: transcriptional, post-transcriptional, translational, and post-translational (2). Expression of PIM1 is mediated through activation of the JAK/STAT pathway.
  1. Meeker, T.C. et al. (1987) J. Cell. Biochem. 35:105.
  2. Friedmann, M. et al. (1992) Arch. Biochem. Biophys. 298:594.

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Bioinformatics

Gene Symbol PIM1
Uniprot