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Recombinant DNA technology

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Presentation on theme: "Recombinant DNA technology"— Presentation transcript:

1 Recombinant DNA technology
Allison, Ch8: Recombinant DNA technology and molecular cloning

2 Historical perspective
Labmda phage

3

4 Restriction modification system

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7 Restriction enzymes

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9 DNA ligase

10 Sticky end ligation Blunt end ligation Modified blunt end ligation

11 Modified blunt end ligation

12 Molecular cloning

13 Vectors Carry DNA molecules Independent replication (origin)
Unique restriction sites (MCS) Selectable marker Easy to transfer and recover from host

14 Choice of vectors

15 Plasmid Nomenclature pBR322 (p-plasmid, BR – origin: Bolivar and Rodriquez, 322 identifier) pUC18 (p-plasmid, UC- university of california, 18 – identifier)

16 Cloning using plasmid vector

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20 Transformation and screening
Transformation (competent cells) Recombinant selection Blue-white screening

21 Constructing libraries
Library Genomic library cDNA library

22 Probes Homologous Heterologous EST probes
Labeling an detection methods Radioactive Enzyme conjugates Chromogenic Fluorescent

23 Radioactive labeling

24 Labeling methods

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27 Library screening

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30 Restriction mapping

31 Electrophoresis

32 RFLP

33 Southern hybridization

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37 DNA sequencing

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39 Automated sequencing


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