Millipore Sigma Vibrant Logo

371768 G-Protein, βγ-Subunit, Bovine Brain

G-Protein, βγ-Subunit, Bovine Brain. Provided in amounts sufficient for six standard curves. It is biologically active and can be used in reconstitution experiments and for quantitation of β-subunit.

G-Protein, βγ-Subunit, Bovine Brain MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents.
View Products on Sigmaaldrich.com
371768
View Pricing & Availability

Overview

Replacement Information

Pricing & Availability

Catalogue Number AvailabilityPackaging Qty/Pack Price Quantity
371768-1250NG
Retrieving availability...
—
Fulfillment and Delivery Delayed Fulfillment and Delivery Delayed
In Stock 
Discontinued
Limited Quantities Available
Availability to be confirmed
    Remaining : Will advise
      Remaining : Will advise
      Will advise
      Contact Customer Service
      Contact Customer Service

      		 Plastic ampoule 1250 ng
      Retrieving price...
      Price could not be retrieved
      Minimum Quantity is a multiple of
      Maximum Quantity is
      Upon Order Completion More Information
      You Saved ()
       
      —
      Request Pricing
      		 —
      Description
      OverviewNative Gβγ-subunit purified from bovine brain. Provides sufficient G-protein βγ-subunit for six standard curves. The βγ-subunit is biologically active and can be used in reconstitution experiments. Useful for quantitation of β-subunit present in any particular cellular compartment.
      Catalogue Number371768
      Brand Family Calbiochem®
      References
      ReferencesBlank, J.L., et al. 1992. J. Biol. Chem. 267, 23069.
      Bourne, H.R., et al. 1992. Cold Spring Harbor Symp. Quant. Biol. 57, 145.
      Federman, A.D., et al. 1992. Nature 356, 159.
      Lustig, K.D., et al. 1993. J. Biol. Chem. 268, 13900.
      Pitcher, J.A., et al. 1992. Science 257, 1264.
      Tang, W.J., and Gilman, A.G. 1992. Cell 70, 869.
      Product Information
      FormLiquid
      FormulationIn 50 mM HEPES, 1 mM DTT, 1 mM EDTA, 0.1% LUBROL® Detergent, pH 7.6.
      PreservativeNone
      Quality LevelMQ100
      Applications
      ApplicationG-Protein, βγ-Subunit, Bovine Brain. Provided in amounts sufficient for six standard curves. It is biologically active and can be used in reconstitution experiments and for quantitation of β-subunit.
      Key Applications Immunoblotting (Western Blotting)
      Application NotesImmunoblotting (see comments)
      Application CommentsMETHOD OF ASSAY:

      1. The stock solution contains 1250 ng of βγ in 25 μl. Prepare working standards from this stock solution as follows: Add 100 μl of solubilization buffer [20 mM Tris, 1 mM EDTA, 1 mM DTT, 100 mM NaCl and 0.9% sodium cholate (pH 8.0)] and mix thoroughly. This provides a concentration of 10 ng/μl. Serially dilute with solubilization buffer to produce 5 ng/μl, 2.5 ng/μl, 1.25 ng/μl and 0.625 ng/μl. You should then have 62.5 μl of each of the standards except the 0.625 ng/μl which should be 125 μl. Complete preparation of the standards by adding 93.75 μl of sample buffer containing glycerol (25% w/v), tracking dye (0.05% w/v), SDS (5% w/v), glycine (3.6% w/v), and β-mercaptoethanol (10% v/v) to each standard except the 0.625 ng/μl, where you should add 187.5 μl to produce the desired concentration.
      A final standard containing the solubilization buffer and sample buffer in the ratio of 1:1.5 (10 μl solubilization buffer per 15 μl sample buffer) should also be prepared to give a zero standard. All standards should then be heated to 80°C for 4 min. The formulation described above provides 100, 50, 25, 12.5, and 6.25 ng of the βγ-subunit per 25 μl of volume. Alternative formulations are acceptable as long as these amounts of βγ-subunit are present for the preparation of a standard curve.
      2. The membrane or cellular organelle preparations should be solubilized (use the solubilization buffer described previously) on ice for 1 h. Thereafter, the preparation should be centrifuged to remove insoluble material; the amount of protein should be determined in the supernatant by an appropriate method. The solubilized protein should be diluted with solubilization buffer to obtain the desired amount of protein to be loaded in a volume of 10 μl. For each 10 μl of solubilized protein add 15 μl of the sample buffer. The preparations should be heated for 4 min at 80°C.
      3. Twenty-five (25) μl of each standard or sample should be loaded in each lane of a SDS-PAGE gel for electrophoresis by standard method. The resolved proteins should be transferred onto nitrocellulose or PVDF membranes by electrophoresis by standard methods. After blocking for 1 h with a standard blocking buffer [5% dried skim milk in buffer (pH 8.0) containing 50 mM Tris, 2 mM CaCl2, 80 mM NaCl, 0.02% sodium azide, and 0.2% Nonidet P-40] the blot should be probed with the provided primary antibody diluted by a factor of 1:1000 in the blocking buffer for at least 1.5 h. After washing, the bands can be visualized by the method of your choice. Use iodinated goat anti-rabbit IgG when your intent is to construct a standard curve using densitometric readings from the blot.
      Biological Information
      Concentration Label Please refer to vial label for lot-specific concentration
      Physicochemical Information
      Dimensions
      Materials Information
      Toxicological Information
      Safety Information according to GHS
      Safety Information
      Product Usage Statements
      Storage and Shipping Information
      Ship Code Dry Ice Only
      Toxicity Standard Handling
      Storage ≤ -70°C
      Avoid freeze/thaw Avoid freeze/thaw
      Do not freeze Ok to freeze
      Special InstructionsFollowing initial thaw, aliquot and freeze (-70°C).
      Canadian export regulations Due to the country and/or U.S. state of origin of the animal material used in this product, this product may not be exported to Canada.
      Packaging Information
      Transport Information
      Supplemental Information
      Specifications
      Global Trade Item Number
      Catalogue Number GTIN
      371768-1250NG 04055977213386

      Documentation

      G-Protein, βγ-Subunit, Bovine Brain SDS

      Title

      Safety Data Sheet (SDS) 

      G-Protein, βγ-Subunit, Bovine Brain Certificates of Analysis

      TitleLot Number
      371768

      References

      Reference overview
      Blank, J.L., et al. 1992. J. Biol. Chem. 267, 23069.
      Bourne, H.R., et al. 1992. Cold Spring Harbor Symp. Quant. Biol. 57, 145.
      Federman, A.D., et al. 1992. Nature 356, 159.
      Lustig, K.D., et al. 1993. J. Biol. Chem. 268, 13900.
      Pitcher, J.A., et al. 1992. Science 257, 1264.
      Tang, W.J., and Gilman, A.G. 1992. Cell 70, 869.
      Data Sheet

      Note that this data sheet is not lot-specific and is representative of the current specifications for this product. Please consult the vial label and the certificate of analysis for information on specific lots. Also note that shipping conditions may differ from storage conditions.

      Revision13-May-2008 JSW
      ApplicationImmunoblotting (see comments)
      DescriptionMany membrane receptors for neurotransmitters and hormones are coupled to intracellular effectors and ion channels by heterotrimeric G-proteins. Receptor activation by ligand causes exchange, in a catalytic fashion, of GDP by GTP on the β-subunits of heterotrimeric G-proteins, followed by the dissociation of the β-subunit from the βγ-subunits. The latter reaction leads to regulation of a variety of effector systems. Recent evidence suggests that in addition to the β-subunit the βγ-subunits may also play a role in effector system regulation. The βγ-subunit has been implicated in the regulation of K+ channels, phospholipase C and A2, and type II adenylylcyclase. A recent study demonstrated a role for βγ-subunits in targeting the β-adrenergic receptor kinase to membrane-bound receptors as well. This product is useful for quantification of β-subunit present in any particular cellular compartment and to study the role of G-protein in intracellular signaling. The purified standard is suitable for positive control or can be used to construct a standard curve using Anti-G-Protein, β-Subunit, Internal (127-139) RAbbit pAb (Cat. No. 371738).
      BackgroundUseful for quantification of β-subunit present in any particular cellular compartment and to study the role of G-protein in intracellular signaling. The purified standard is suitable for positive control or can be used to construct a standard curve using Anti-G-Protein, β-Subunit, Internal (127-139) (Cat. No. 371738). Many membrane receptors for neurotransmitters and hormones are coupled to intracellular effectors and ion channels by heterotrimeric G-proteins. Receptor activation by ligand causes exchange, in a catalytic fashion, of GDP by GTP on the β-subunits of heterotrimeric G-proteins, followed by the dissociation of the β-subunit from the βγ-subunits. The latter reaction leads to regulation of a variety of effector systems. Recent evidence suggests that in addition to the β-subunit the βγ-subunits may also play a role in effector system regulation. The βγ-subunit has been implicated in the regulation of K+ channels, phospholipase C and A2, and type II adenylylcyclase. A recent study demonstrated a role for βγ-subunits in targeting the β-adrenergic receptor kinase to membrane-bound receptors as well.
      FormLiquid
      FormulationIn 50 mM HEPES, 1 mM DTT, 1 mM EDTA, 0.1% LUBROL® Detergent, pH 7.6.
      Concentration Label Please refer to vial label for lot-specific concentration
      Recommended reaction conditions
      1. The stock solution contains 1250 ng of βγ in 25 μl. Prepare working standards from this stock solution as follows: Add 100 μl of solubilization buffer [20 mM Tris, 1 mM EDTA, 1 mM DTT, 100 mM NaCl and 0.9% sodium cholate (pH 8.0)] and mix thoroughly. This provides a concentration of 10 ng/μl. Serially dilute with solubilization buffer to produce 5 ng/μl, 2.5 ng/μl, 1.25 ng/μl and 0.625 ng/μl. You should then have 62.5 μl of each of the standards except the 0.625 ng/μl which should be 125 μl. Complete preparation of the standards by adding 93.75 μl of sample buffer containing glycerol (25% w/v), tracking dye (0.05% w/v), SDS (5% w/v), glycine (3.6% w/v), and β-mercaptoethanol (10% v/v) to each standard except the 0.625 ng/μl, where you should add 187.5 μl to produce the desired concentration. A final standard containing the solubilization buffer and sample buffer in the ratio of 1:1.5 (10 μl solubilization buffer per 15 μl sample buffer) should also be prepared to give a zero standard. All standards should then be heated to 80°C for 4 min. The formulation described above provides 100, 50, 25, 12.5, and 6.25 ng of the βγ-subunit per 25 μl of volume. Alternative formulations are acceptable as long as these amounts of βγ-subunit are present for the preparation of a standard curve. 2. The membrane or cellular organelle preparations should be solubilized (use the solubilization buffer described previously) on ice for 1 h. Thereafter, the preparation should be centrifuged to remove insoluble material; the amount of protein should be determined in the supernatant by an appropriate method. The solubilized protein should be diluted with solubilization buffer to obtain the desired amount of protein to be loaded in a volume of 10 μl. For each 10 μl of solubilized protein add 15 μl of the sample buffer. The preparations should be heated for 4 min at 80°C. 3. Twenty-five (25) μl of each standard or sample should be loaded in each lane of a SDS-PAGE gel for electrophoresis by standard method. The resolved proteins should be transferred onto nitrocellulose or PVDF membranes by electrophoresis by standard methods. After blocking for 1 h with a standard blocking buffer [5% dried skim milk in buffer (pH 8.0) containing 50 mM Tris, 2 mM CaCl2, 80 mM NaCl, 0.02% sodium azide, and 0.2% Nonidet P-40] the blot should be probed with the provided primary antibody diluted by a factor of 1:1000 in the blocking buffer for at least 1.5 h. After washing, the bands can be visualized by the method of your choice. Use iodinated goat anti-rabbit IgG when your intent is to construct a standard curve using densitometric readings from the blot.
      PreservativeNone
      CommentsMETHOD OF ASSAY:

      1. The stock solution contains 1250 ng of βγ in 25 μl. Prepare working standards from this stock solution as follows: Add 100 μl of solubilization buffer [20 mM Tris, 1 mM EDTA, 1 mM DTT, 100 mM NaCl and 0.9% sodium cholate (pH 8.0)] and mix thoroughly. This provides a concentration of 10 ng/μl. Serially dilute with solubilization buffer to produce 5 ng/μl, 2.5 ng/μl, 1.25 ng/μl and 0.625 ng/μl. You should then have 62.5 μl of each of the standards except the 0.625 ng/μl which should be 125 μl. Complete preparation of the standards by adding 93.75 μl of sample buffer containing glycerol (25% w/v), tracking dye (0.05% w/v), SDS (5% w/v), glycine (3.6% w/v), and β-mercaptoethanol (10% v/v) to each standard except the 0.625 ng/μl, where you should add 187.5 μl to produce the desired concentration.
      A final standard containing the solubilization buffer and sample buffer in the ratio of 1:1.5 (10 μl solubilization buffer per 15 μl sample buffer) should also be prepared to give a zero standard. All standards should then be heated to 80°C for 4 min. The formulation described above provides 100, 50, 25, 12.5, and 6.25 ng of the βγ-subunit per 25 μl of volume. Alternative formulations are acceptable as long as these amounts of βγ-subunit are present for the preparation of a standard curve.
      2. The membrane or cellular organelle preparations should be solubilized (use the solubilization buffer described previously) on ice for 1 h. Thereafter, the preparation should be centrifuged to remove insoluble material; the amount of protein should be determined in the supernatant by an appropriate method. The solubilized protein should be diluted with solubilization buffer to obtain the desired amount of protein to be loaded in a volume of 10 μl. For each 10 μl of solubilized protein add 15 μl of the sample buffer. The preparations should be heated for 4 min at 80°C.
      3. Twenty-five (25) μl of each standard or sample should be loaded in each lane of a SDS-PAGE gel for electrophoresis by standard method. The resolved proteins should be transferred onto nitrocellulose or PVDF membranes by electrophoresis by standard methods. After blocking for 1 h with a standard blocking buffer [5% dried skim milk in buffer (pH 8.0) containing 50 mM Tris, 2 mM CaCl2, 80 mM NaCl, 0.02% sodium azide, and 0.2% Nonidet P-40] the blot should be probed with the provided primary antibody diluted by a factor of 1:1000 in the blocking buffer for at least 1.5 h. After washing, the bands can be visualized by the method of your choice. Use iodinated goat anti-rabbit IgG when your intent is to construct a standard curve using densitometric readings from the blot.
      Storage Avoid freeze/thaw
      ≤ -70°C
      Do Not Freeze Ok to freeze
      Special InstructionsFollowing initial thaw, aliquot and freeze (-70°C).
      Toxicity Standard Handling
      ReferencesBlank, J.L., et al. 1992. J. Biol. Chem. 267, 23069.
      Bourne, H.R., et al. 1992. Cold Spring Harbor Symp. Quant. Biol. 57, 145.
      Federman, A.D., et al. 1992. Nature 356, 159.
      Lustig, K.D., et al. 1993. J. Biol. Chem. 268, 13900.
      Pitcher, J.A., et al. 1992. Science 257, 1264.
      Tang, W.J., and Gilman, A.G. 1992. Cell 70, 869.