Color Prestained Protein Standard, Broad Range (10-250 kDa) (2024)

HomeProtein ToolsProductsColor Prestained Protein Standard, Broad Range (10-250 kDa)

• Product Information

  The Color Prestained Protein Standard, Broad Range is a mixture of highly pure, recombinant, prestained proteins, covalently coupled with a blue chromophore, and two reference bands (one orange and one green at 72 kDa and 26 kDa, respectively), that resolves into 11 sharp bands when electrophoresed. The Color Prestained Protein Standard is designed for observing protein separation during SDS-PAGE, verification of western transfer efficiency on membranes, and for approximating the size of proteins (1-2). The Color Prestained Protein Standard may also be used in fluorescent imaging of SDS-PAGE.

  

  This product is related to the following categories:

  Protein Standards Products,

  Protein Standards Products

  This product can be used in the following applications:

  Protein Standards,

  Protein Analysis Tools

  • Reagents Supplied

    The following reagents are supplied with this product:

    NEB #	Component Name	Component #	Stored at (°C)	Amount	Concentration
    P7719S -20 Color Prestained Protein Standard, Broad Range (10-250 kDa) P7719SVIAL -20 1 x 150 gel lanes Not Applicable
    P7719L -20 Color Prestained Protein Standard, Broad Range (10-250 kDa) P7719SVIAL -20 5 x 150 gel lanes Not Applicable

    See Also

    Protein Standards & Ladders - USProtein Ladders and Standards (Markers)

  • Properties & Usage

    Storage Buffer

    62.5 mM Tris-phosphate
    1 mM EDTA
    2% SDS
    10 mM DTT
    1 mM NaN₃
    33% Glycerol
    pH 7.5 @ -20°C

  • Advantages and Features

    Features

    • Direct loading, additional loading buffer and heat incubation not required
    • Applications include verification of western blot transfer efficiency on membranes and fluorescent imaging of SDS-PAGE

  • Related Products

    Companion Products

    • Blue Prestained Protein Standard, Broad Range (11-250 kDa)
    • Unstained Protein Standard, Broad Range (10-200 kDa)

  • Product Notes

    1. To ensure uniform mobility, load an equal volume of 1X Reducing SDS Loading Buffer into any unused wells.
    2. To maximize shelf life, store at -20°C. Guaranteed stable for 2 years when properly stored.
    3. It is not necessary to pre-heat the unstained protein standard prior to loading on a gel.
    4. Recommended mini-gel load: 3 μl.
    5. Apparent molecular weight values for prestained proteins can be different when run on different gel types and percentages.

  • References

    1. Laemmli, UK (1970). Nature. 227, 680.
    2. Sambrook, J., Fitsch, EF. and Maniatis, T. (2001). Molecular Cloning: A Laboratory Manual. (3rd ed.). Cold Spring Harbor: Cold Spring Harbor Laboratory Press.

• Protocols, Manuals & Usage

  • Protocols

    1. Protocol for Using the Color Prestained Protein Standard, Broad Range (10-250 kDa) (NEB #P7719) for an SDS-PAGE Mini Gel

• FAQs & Troubleshooting

  • FAQs

    1. How does the new Color Prestained Protein Standard, Broad Range differ from NEB’s previous Color Prestained Protein Standard?
    2. What is the protein concentration of the proteins used in the Color Prestained Protein Standard, Broad Range?
    3. I accidentally left my Protein Standard out at room temperature for a number of days. Is it still okay to use?
    4. I notice that the molecular weights I am observing are slightly different than those reported. Can you explain?
    5. What volume is supplied in a small pack and a large pack of NEB’s Protein Standards?

• Citations & Technical Literature

  • Brochures

  • Citations

    Product Citation Tool

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• Quality, Safety & Legal

  • Quality Control Assays

    Quality Control tests are performed on each new lot of NEB product to meet the specifications designated for it. Specifications and individual lot data from the tests that are performed for this particular product can be found and downloaded on the Product Specification Sheet, Certificate of Analysis, data card or product manual. Further information regarding NEB product quality can be found here.

  • Specifications & Change Notifications

    The Specification sheet is a document that includes the storage temperature, shelf life and the specifications designated for the product. The following file naming structure is used to name these document files: [Product Number]_[Size]_[Version]

    • P7719S_L_v1

  • Certificate of Analysis

    The Certificate of Analysis (COA) is a signed document that includes the storage temperature, expiration date and quality controls for an individual lot. The following file naming structure is used to name these document files: [Product Number]_[Size]_[Version]_[Lot Number]

    • P7719G_v0_10040353
    • P7719L_v1_10040352
    • P7719S_v1_10040351
    • P7719G_v0_10043934
    • P7719L_v1_10049242
    • P7719S_v1_10049243
    • P7719G_v1_10052748
    • P7719S_v1_10056021
    • P7719S_v1_10058286
    • P7719L_v1_10061372
    • P7719S_v1_10061373
    • P7719S_v1_10065265
    • P7719L_v1_10065267
    • P7719S_v1_10067996
    • P7719L_v1_10069989
    • P7719G_v1_10056384
    • P7719S_v1_10069990
    • P7719L_v1_10075411
    • P7719S_v1_10075412
    • P7719S_v1_10083357
    • P7719L_v1_10083359
    • P7719L_v1_10088273
    • P7719S_v1_10088272
    • P7719S_v1_10097403
    • P7719S_v1_10101274
    • P7719L_v1_10101275
    • P7719G_v1_10083358
    • P7719S_v1_10106698
    • P7719S_v1_10112144
    • P7719S_v1_10118360
    • P7719G_v1_10113861
    • P7719L_v1_10118358
    • P7719S_v1_10124323
    • P7719L_v1_10127448
    • P7719S_v1_10127449
    • P7719S_v1_10134394
    • P7719G_v1_10143261
    • P7719L_v1_10143264
    • P7719S_v1_10143265
    • P7719L_v1_10148479
    • P7719L_v1_10152127
    • P7719S_v1_10148481
    • P7719L_v1_10158189
    • P7719G_v1_10157964
    • P7719S_v1_10158188
    • P7719S_v1_10163409
    • P7719S_v1_10169898
    • P7719L_v1_10177701
    • P7719S_v1_10178563
    • P7719L_v1_10184466
    • P7719S_v1_10184467
    • P7719L_v1_10188125
    • P7719G_v1_10190569
    • P7719S_v1_10197984
    • P7719S_v1_10208343
    • P7719S_v1_10213814
    • P7719G_v1_10222511
    • P7719L_v1_10227390
    • P7719S_v1_10226276
    • P7719S_v1_10235822
    • P7719S_v1_10243984

  • Safety Data Sheets

    The following is a list of Safety Data Sheet (SDS) that apply to this product to help you use it safely.

    • Color Prestained Protein Standard, Broad Range (10-250 kDa)

  • Legal and Disclaimers

    Products and content are covered by one or more patents, trademarks and/or copyrights owned or controlled by New England Biolabs, Inc (NEB). The use of trademark symbols does not necessarily indicate that the name is trademarked in the country where it is being read; it indicates where the content was originally developed. The use of this product may require the buyer to obtain additional third-party intellectual property rights for certain applications. For more information, please email busdev@neb.com.

    This product is intended for research purposes only. This product is not intended to be used for therapeutic or diagnostic purposes in humans or animals.

    New England Biolabs (NEB) is committed to practicing ethical science – we believe it is our job as researchers to ask the important questions that when answered will help preserve our quality of life and the world that we live in. However, this research should always be done in safe and ethical manner. Learn more.