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  • Ph.D.™-C7C Phage Display Peptide Library Kit


    The Ph.D.™-C7C Phage Display Peptide Library is based on a combinatorial library of random dodecapeptides fused to a minor coat protein (pIII) of M13 phage (1–6). The displayed peptide is expressed at the N-terminus of pIII, i.e., the first residue of the mature protein is the first randomized position. The peptide is followed by a short spacer (Gly-Gly-Gly-Ser) and then the wild-type pIII sequence. The library consists of approximately 109 electroporated sequences amplified once to yield approximately 100 copies of each sequence in 10 µl of the supplied phage. 

    Please click the link for Applications of the Ph.D. Phage Display Peptide Libraries.

    Complexity: 1.2 x 109 transformants.

    Figure 1:
    Panning with a Ph.D. Phage Display Library

    System Components

    The following reagents are supplied with this product:

    Store at (°C)Concentration
    Streptavidin, lyophilized
    Biotin10 mM
    E. coli K12 ER2738-20
    -28 glll Sequencing Primer (22-mer)1 pmol/μl
    -96 glll Sequencing Primer (20-mer)1 pmol/μl
    Ph.D.™-C7C Phage Display Peptide Library-201 x1013 pfu/ml

    Properties and Usage

    Storage Temperature



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    Supporting Documents

    Material Safety Datasheets

    The following is a list of Material Safety Data Sheets (MSDS) that apply to this product to help you use it safely. The following file naming structure is used to name these document files: [Product Name] MSDS. For international versions please contact us at info@neb.com.


    The Product Manual includes details for how to use the product, as well as details of its formulation and quality controls. The following file naming structure is used to name these document files: manual[Catalog Number].
    1. Phage Library Choice
    2. I am using Ph.D.™ Phage display and the amplified phage titer is low.
    3. I am using Ph.D.™ Phage Display and the phage DNA templates do not yield readable sequence.
    4. I am using Ph.D.™ Phage Display and the sequencing templates do not run where they should on a gel.
    5. I am using Ph.D.™ Phage Display and after 4 or more rounds of panning all clones are wild-type phage (white plaques).
    6. When performing an experiment using Ph.D.™ Phage Display, the ELISA indicates that background binding to the plate is as high as binding to the target.
    7. When using the Ph.D.™ Phage Display, panning yielded a consensus sequence, but no ELISA signal.
    8. I am using Ph.D.™ Phage Display and the streptavidin control experiment did not yield the HPQ consensus sequence.
    9. Can a different bacterial strain be used with the Ph.D.™ Phage Display?
    1. M13 Amplification

    Troubleshooting Guides