Compositions for use in recombinational cloning of nucelic acids
The present invention relates generally to compositions and methods for use in recombinational cloning of nucleic acid molecules. In particular, the invention relates to nucleic acid molecules encoding one or more recombination sites or portions thereof, to nucleic acid molecules comprising one or more of these recombination site nucleotide sequences and optionally comprising one or more additional physical or functional nucleotide sequences. The invention also relates to vectors comprising the nucleic acid molecules of the invention, to host cells comprising the vectors or nucleic acid molecules of the invention, to methods of producing polypeptides using the nucleic acid molecules of the invention, and to polypeptides encoded by these nucleic acid molecules or produced by the methods of the invention. The invention also relates to antibodies that bind to one or more polypeptides of the invention or epitopes thereof. The invention also relates to the use of these compositions in methods for recombinational cloning of nucleic acids, in vitro and in vivo, to provide chimeric DNA molecules that have particular characteristics and/or DNA segments.
1. An isolated nucleic acid segment, comprising, in order, the following components:
a) a first site-specific recombination site,
b) a ccdB gene,
c) a nucleic acid region encoding the amino acid sequence encoded by nucleotides 1426-1510 of SEQ ID No. 129, and
d) a second site-specific recombination site.
2. The nucleic acid segment of claim 1 , wherein the first or second site-specific recombination sites are att sites.
3. The nucleic acid segment of claim 1 , wherein the first and second site-specific recombination sites do not recombine with each other.
4. The nucleic acid segment of claim 1 , wherein the nucleic acid segment is a linear nucleic acid molecule.
5. A vector including the isolated nucleic acid segment of claim 1 .
6. The nucleic acid segment of claim 1 , wherein the nucleic acid segment additionally contains an antibiotic resistance marker between the first and second site-specific recombination sites.
7. An isolated cloning vector comprising the following components:
a) a first site-specific recombination site,
b) a ccdB gene,
c) a nucleic acid region encoding the amino acid sequence encoded by nucleotides 1426-1510 of SEQ ID No. 129, and
d) a second site-specific recombination site.
8. The cloning vector of claim 7 which is a plasmid.
9. The plasmid cloning vector of claim 8 , further comprising a prokaryotic origin of replication and a eukaryotic promoter.
10. The plasmid cloning vector of claim 8 , wherein the first or second site-specific recombination sites are att sites.
11. The plasmid cloning vector of claim 8 , wherein the first and second site-specific recombination sites do not recombine with each other.