Choosing a Cloning Vector
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Commercial source |
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Plasmid |
Features |
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pUC18, pUC19 |
Small size (2.7 kb) |
NEB |
High copy number |
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Multiple cloning site |
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Ampicillin-resistance marker |
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Blue/white selectionsee Chapter 19) |
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pBluescript vectors |
As pUC |
Stratagene |
Single-stranded replication origin |
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T7 and SP6 promoters flanking MCS a |
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pACYC vectors |
Low copy number (15 copies per cell) |
NEB |
p15A origin of replication |
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Supercos |
Cosmid vector |
Stratagene |
Two cos sites |
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Insert size 30–42 kb |
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Ampicillin-selectable marker |
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T3 and T7 promoters flanking cloning site |
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EMBL3 |
λreplacement vector |
Promega |
MCS sites: Sal I, Bam HI and Eco RI |
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λZAP |
λ vector |
Stratagene |
In vivo excision into pBluescript phagemid vector |
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Cloning capacity 10 kb |
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Blue/white selection |
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pBeloBAC11 |
BAC vector |
NEB |
Inserts up to 1 Mb |
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T7 and SP6 promoters flank insertion site |
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Blue/white selection |
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Cos site |
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LoxP site |