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Recombinant DNA technology
Allison, Ch8: Recombinant DNA technology and molecular cloning
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Historical perspective
Labmda phage
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Restriction modification system
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Restriction enzymes
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DNA ligase
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Sticky end ligation Blunt end ligation Modified blunt end ligation
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Modified blunt end ligation
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Molecular cloning
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Vectors Carry DNA molecules Independent replication (origin)
Unique restriction sites (MCS) Selectable marker Easy to transfer and recover from host
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Choice of vectors
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Plasmid Nomenclature pBR322 (p-plasmid, BR – origin: Bolivar and Rodriquez, 322 identifier) pUC18 (p-plasmid, UC- university of california, 18 – identifier)
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Cloning using plasmid vector
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Transformation and screening
Transformation (competent cells) Recombinant selection Blue-white screening
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Constructing libraries
Library Genomic library cDNA library
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Probes Homologous Heterologous EST probes
Labeling an detection methods Radioactive Enzyme conjugates Chromogenic Fluorescent
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Radioactive labeling
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Labeling methods
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Library screening
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Restriction mapping
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Electrophoresis
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RFLP
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Southern hybridization
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DNA sequencing
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Automated sequencing
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