Standards for Electrophoresis and Blotting

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1 Electrophoresis and Blotting for Electrophoresis and Blotting A Diverse Portfolio for All Applications

2 A Diverse Portfolio of Bio-Rad s standards provide an excellent means of monitoring electrophoresis and blotting experiments. A variety of protein standards have been formulated for a large range of applications, including, western blotting, 2-D PAGE, and isoelectric focusing (IEF). These standards can be used for gel and blot orientation, to monitor transfer efficiency, and for molecular weight (MW) estimation and determination. can be categorized by application: and Western Blotting Recombinant prestained protein standards Recombinant unstained protein standards Natural prestained protein standards Natural unstained protein standards Specialty Protein standards for IEF Protein standards for 2-D Precision Plus Protein Prestained Natural Unstained Natural Specialty WesternC Kaleidoscope Dual Xtra Dual Color All Blue Unstained Broad Range Low Range High Range Natural Kaleidoscope Broad Range Low Range High Range Polypeptide IEF 2-D Standard Plugs*** MW/pI range pi pi Number of proteins Electrophoresis Accurate MW estimation Multicolored Coomassie staining Fluorescent staining 2-D electrophoresis IEF Plug format for use in gels with no reference well Blotting Monitoring transfer efficiency Coomassie staining Fluorescent staining Fluorescent blotting* Immunodetection** Catalog Numbers Single unit Value pack of 5 units * These standards have fluorescent properties and can be used for fluorescent blotting applications. See bulletin 5723 for details on using Precision Plus Protein WesternC standards for fluorescent multiplexing. Precision Plus Protein Dual Xtra standards ( ) are recommended for fluorescent blot analysis of proteins between 5 and 250. ** Immunodetection via addition of a Precision Protein StrepTactin and horseradish peroxidase (HRP) or StrepTactin and alkaline phosphatase (AP) conjugate, which will bind to the internal Strep-tags on the proteins. *** 24 unstained plugs for 2-D gels.

3 Recombinant Prestained Protein Bio-Rad offers a complete family of Precision Plus Protein prestained standards, including All Blue, Dual Color, Dual Xtra, Kaleidoscope, and WesternC options. All standards show the same pattern, with only minimal shift, and can be used for MW determination of unknown proteins in gels and on blots. Precision Plus Protein prestained standards offer: Exceptional linearity (R 2 >0.99) for determining MW 10 sharp, nonshifting bands (10250 ) Lot-to-lot consistency Matching migration patterns among the entire Precision Plus Protein standards family 3 high-intensity reference bands in the All Blue and Dual Color standards at 25, 50, and 75 MW, log MW Exceptional linearity of Precision Plus Protein standards. R f All Blue Dual Color Dual Xtra Kaleidoscope WesternC Precision Plus Protein prestained standards family. New and Improved Precision Plus Protein Dual Color Standard Brighter for easy identification Sharper for accurate molecular weight estimation Stronger band intensity throughout blot development

4 Recombinant Unstained Protein Recombinant unstained protein standards allow accurate MW determination on gels and western blots. Precision Plus Protein unstained standards have the following attributes: Bands in every batch have the same MW, confirmed by mass spectrometry and migration in a Laemmli buffer system 10 sharp, nonshifting bands (10250 ) 3 high-intensity reference bands at 25, 50, and 75 Unique Strep-tag affinity sequence allows detection and MW determination on western blots Western blot detection of green fluorescent protein (GFP) and Precision Plus Protein unstained standards using the Immun-Blot AP colorimetric detection kit. Maximum sensitivity achievable with Immun-Blot AP is 100 pg. A gel run with 4 µl of standards (lane 1) and a dilution series of E. coli lysate containing overexpressed GFP (lanes 210) was transferred to a PVDF membrane. The blot was probed with a primary antibody specific for GFP, then incubated with StrepTactin-AP and a secondary antibody conjugated to AP. The blot was developed using the Immun-Blot AP kit. Western blot detection of GFP and Precision Plus Protein unstained standards using the Immun-Star HRP chemiluminescent detection kit. Maximum sensitivity achievable with Immun-Star HRP is 13 pg. A gel run with 0.5 µl of standards (lane 1) and a dilution series of E. coli lysate containing overexpressed GFP (lanes 28) was transferred to a PVDF membrane. The blot was probed with a primary antibody specific for GFP, then incubated with StrepTactin-HRP and a secondary antibody conjugated to HRP. The blot was developed using the Immun-Star HRP kit.

5 Natural Prestained Protein Prestained standards are visualized before the gel is stained, making them ideal for monitoring protein migration during an electrophoretic run, for gel and blot orientation, and for assessing transfer efficiency. Prestained Available in high, low, and broad ranges Blended proteins give uniform band intensities Covalently bound dye will not dissociate during normal staining or destaining Kaleidoscope Prestained These standards include all attributes of the prestained standards, plus: Individually colored proteins for instant band recognition Good transfer efficiency for western blotting Constituent proteins of natural prestained standards. Prestained SDS-Page Kaleidoscope Approximate Protein Source MW* () Broad Low High Prestained Myosin Rabbit skeletal muscle b-galactosidase E. coli Phosphorylase b Rabbit muscle 97.4 Serum albumin (BSA) Bovine 66.2 Ovalbumin Hen egg white 45.0 Carbonic anhydrase Bovine 31.0 Trypsin inhibitor Soybean 21.5 Lysozyme Hen egg white 14.4 Aprotinin Bovine pancreas 6.5 * MW will vary from lot to lot; see lot-specific calibration included with standards Prestained Broad Range Prestained Low Range Prestained High Range Kaleidoscope Prestained Natural prestained standards. Molecular weights shown are of representative lots. Actual weights may vary.

6 Natural Unstained Protein Natural unstained protein standards allow accurate MW determination on gels. Every batch is tested for proper mobility, providing a reliable control for gel-to-gel variability. Available in high, low, and broad MW ranges Blended to give uniform band intensities with Coomassie Blue R-250 stain Polypeptide Formulated for MW determination of peptides and small proteins resolved on Tris-Tricine gels Contain 6 polypeptides with MW ranging from 1.4 to 26.6 Blended to stain uniformly with Coomassie G-250 stain Constituent proteins of natural unstained standards. Ranges Available* Protein Source MW () Broad Low High Polypeptide Myosin Rabbit skeletal muscle b-galactosidase E. coli Phosphorylase b Rabbit muscle 97.4 Serum albumin Bovine 66.2 Ovalbumin Hen egg white 45.0 Carbonic anhydrase Bovine 31.0 Triosephosphate isomerase Rabbit 26.6 Trypsin inhibitor Soybean 21.5 Myoglobin Equine 17.0 a-lactalbumin Bovine 14.5 Lysozyme Hen egg white 14.4 Aprotinin Bovine pancreas 6.5 Insulin B chain, oxidized Bovine 3.5 Bacitracin Bacillus licheniformis 1.4 * high, low, broad, and polypeptide Broad Range Low Range High Range Polypeptide Natural unstained standards.

7 Specialty Protein for IEF IEF Allow reproducible, dependable pi calibration in native polyacrylamide and agarose IEF gels Contain 9 native proteins with pi ranging from 4.45 to of the 9 proteins are naturally colored to monitor focusing Constituent proteins of IEF standards.* Protein Color pi Cytochrome c Red 9.6 Lentil lectin (3 bands) 7.8, 8.0, 8.2 Human hemoglobin C Red 7.5 Human hemoglobin A Red 7.1 Equine myoglobin (2 bands) Brown 7.0 Human carbonic anhydrase 6.5 Bovine carbonic anhydrase 6.0 b-lactoglobulin B 5.1 Phycocyanin (3 bands) Blue 4.45, 4.65, 4.75 * Because the IEF standards are in native form, they cannot be used with reducing or denaturing agents such as urea, b-mercaptoethanol, or dithiothreitol. For calibration of IEF tube gels containing urea, use 2-D standards. pi 8.2 pl 8.0 pl 7.8 pi 7.5 pi 7.1 pi 7.0 pi 6.5 pi 6.0 pi 5.1 pi 4.75 pl 4.45 and 4.65 IEF standards. The gel was stained with Crocein Scarlet. Specialty Protein for 2-D 2-D Provide calibrated references for the pi and MW of proteins in 2-D applications Consist of 7 reduced, denatured proteins that can be visualized with silver or Coomassie Blue staining Constituent proteins of 2-D standards. MW, Protein pi MW () 1. Hen egg white conalbumin 6.0, 6.3, Bovine serum albumin (BSA) 5.4, 5.5, (empirically determined) 3. Bovine muscle actin 5.0, (empirically determined) 4. Rabbit muscle GAPDH 8.3, Bovine carbonic anhydrase 5.9, Soybean trypsin inhibitor Equine myoglobin pl Two-dimensional electrophoretic protein pattern of 2-D standards. The standards (2.5 µl) were run on 7 cm ReadyStrip IPG strips, then in the Mini-PROTEAN II cell. For method details, see Klose (1975), Klose and Feller (1981), and Jungblut and Seifert (1990). The gel was stained with Bio-Rad s silver stain kit.

8 References Jungblut PR and Seifert R, Analysis by high-resolution two-dimensional electrophoresis of differentiation-dependent alterations in cytosolic protein pattern of HL-60 leukemic cells, J Biochem Biophys Methods 21, 4758 (1990). Klose J, Protein mapping by combined isoelectric focusing and electrophoresis of mouse tissues. A novel approach to testing for induced point mutations in mammals, Humangenetik 26, (1975). Klose J and Feller M, Two-dimensional electrophoresis of membrane and cytosol proteins of mouse liver and brain, Electrophoresis 2, 1224 (1981). Ordering Information Catalog # Description Recombinant Prestained Protein Precision Plus Protein All Blue Value Pack, 5 x 500 µl, 250 applications Precision Plus Protein All Blue 500 µl, 50 applications Precision Plus Protein Dual Color Value Pack, 5 x 500 µl, 250 applications Precision Plus Protein Dual Color 500 µl, 50 applications Precision Plus Protein Dual Xtra Value Pack, 5 x 500 µl, 250 applications Precision Plus Protein Dual Xtra 500 µl, 50 applications Precision Plus Protein Kaleidoscope Value Pack, 5 x 500 µl, 250 applications Precision Plus Protein Kaleidoscope 500 µl, 50 applications Precision Plus Protein WesternC Value Pack, 5 x 250 µl, 250 applications Precision Plus WesternC ( + HRP) Value Pack, 5 x 250 µl, 250 applications Precision Plus Protein WesternC 250 µl, 50 applications Recombinant Unstained Protein Precision Plus Protein Unstained Value Pack, 5 x 1000 µl, 500 applications Precision Plus Protein Unstained 1000 µl Precision Plus Protein Unstained Standard Plugs, 24 plugs Natural Prestained Protein Kaleidoscope Prestained 500 µl Prestained low range, 500 µl Prestained high range, 500 µl Prestained broad range, 500 µl Natural Unstained Protein high range, 200 µl low range, 200 µl broad range, 200 µl Polypeptide 200 µl Specialty Protein IEF 250 µl D 250 µl Accessory Reagents Precision Protein StrepTactin-HRP Conjugate, 300 µl Precision Protein StrepTactin-AP Conjugate, 300 µl Avidin-HRP, 2 ml Avidin-AP, 1 ml Streptavidin-AP, 0.5 ml Premixed Sample Buffers Laemmli Sample Buffer, 30 ml Native Sample Buffer, 30 ml Tricine Sample Buffer, 30 ml TBE-Urea Sample Buffer, 30 ml IEF Sample Buffer, 30 ml Zymogram Sample Buffer, 30 ml Nucleic Acid Sample Buffer, 5x, 10 ml XT Sample Buffer, 4x, 10 ml Gel-Casting Buffers Stacking Gel Buffer, 0.5 M Tris-HCl, ph 6.8, 1 L Resolving Gel Buffer, 1.5 M Tris-HCl, ph 8.8, 1 L Premixed Electrophoresis Buffers x Tris/Glycine/SDS, 1 L x Tris/Glycine/SDS, 5 L cube x Tris/Glycine, 1 L x Tris/Glycine, 5 L cube x Tris/Tricine/SDS, 1 L x IEF Anode Buffer, 250 ml x IEF Cathode Buffer, 250 ml x Tris/Boric Acid/EDTA (TBE), 1 L x Tris/Boric Acid/EDTA (TBE), 5 L cube x Tris/Boric Acid/EDTA (TBE), extended range, 1 L x Tris/Acetic Acid/EDTA (TAE), 1 L x Tris/Acetic Acid/EDTA (TAE), 5 L cube x Zymogram Renaturation Buffer, 125 ml x Zymogram Development Buffer, 125 ml Coomassie is a trademark of BASF Aktiengesellschaft. StrepTactin and Strep-tag are trademarks of Institut für Bioanalytik GmbH. StrepTactin is covered by German patent application P Strep-tag technology for western blot detection is covered by US patent 5,506,121 and by UK patent 2,272,698. Bio-Rad Laboratories, Inc. is licensed by Institut für Bioanalytik GmbH to sell these products for research use only. * Precision Plus Protein are sold under license from Life Technologies Corporation, Carlsbad, CA for use only by the buyer of the product. The buyer is not authorized to sell or resell this product or its components. Bio-Rad Laboratories, Inc. Life Science Group Web site USA Australia Austria Belgium Brazil Canada China Czech Republic Denmark Finland France Germany Greece Hong Kong Hungary India Israel Italy Japan Korea Mexico The Netherlands New Zealand Norway Poland Portugal Russia Singapore South Africa Spain Sweden Switzerland Taiwan Thailand United Kingdom Bulletin 3118 Rev D US/EG Sig 1213

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