user-defined upper limit for the number of target sequences returned
Alignment
region of similarity between target and query sequences
E-value
a BLAST statistic representing the significance of an alignment, values close to zero
indicate high sequence similarity with low probability of the similarity occurring by chance
Identities
the number of exact nucleotide matches over the alignment, expressed as a fraction
and a percentage
Query Coverage
the length of the query sequence that matches the target sequence in the
alignment
Bit Score
a BLAST statistic measuring the quality of an alignment, higher values indicate a
more significant match
Span
the length of the alignment, including gaps
About Search by Sequence
Search by Sequence performs a nucleotide-nucleotide BLAST search against Addgene’s plasmid sequence database.
BLAST returns plasmids with similarity to the query sequence.
Results are sorted by E-value, a statistic from BLAST that describes the significance of a match.
Lower values are considered better matches.
FASTA headers and numbers at the beginning of each line will be removed.
The query should only contain DNA characters.
Tips for Success
Enter a distinct sequence that is an important, differentiating feature. For example, the coding region of
a gene, instead of the plasmid origin of replication.
Inspect the percent identity, query coverage, and alignment details to determine if a result match is satisfactory.
Visit the corresponding plasmid webpage to view additional details about a matching plasmid.
If no results are returned:
Try a different isoform or region of the desired sequence.
Choose a different BLAST database. Try the general “All Addgene Plasmids” (default selection),
instead of a specific database, such as “Plant Expression Plasmids”
Try selecting a different BLAST algorithm:
megablast: Designed for comparing sequences within the same, or closely related, species.
Default selection.
blastn: Designed for comparing sequences from different species. May return additional results,
if exact species match is not required.
blastn-short: Optimized for searching with shorter sequences (<= 30 nucleotides)
but can still be effective with slightly larger sequences.
There may not be a match in our database.
You can adjust the Max Results setting on the results page from 25 to 500. If many sequences share the same top E-value,
only a truncated set of equally high-scoring matches will be shown. Set the Max Results to 500 to see more matches.
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Vector to introduce a constitutive rtta3G cassette and a DOX-inducible Flag-Halo-mCTCF WT, targeting the mouse TIGRE acceptor locus. Use with Addgene #92144 sgRNA. Use puromycin selection.
Vector to introduce a constitutive rtta3G cassette and a DOX-inducible Flag-Halo-mCTCF ZF1 mutant, targeting the mouse TIGRE acceptor locus. Use with Addgene #92144 sgRNA. Use puromycin selection.
A collection of Multisite Gateway Entry clone plasmids which can be used in a combinatorial fashion to generate large numbers of tagged expression clones for protein expression in a variety of systems
The 4G (Golden-Gate-guided Gibson) cloning kit provides elements for rapid one-day assembly of multi-gene expression vectors in bacterial and eukaryotic expression hosts.
Ready-to-use AAV2 particles produced from pAAV-CAG-eYFP (#104055). In addition to the viral particles, you will also receive purified pAAV-CAG-eYFP plasmid DNA.
CAG-driven eYFP expression control. These AAV preparations are suitable purity for injection into animals.
Ready-to-use AAV5 particles produced from pAAV-CAG-eYFP (#104055). In addition to the viral particles, you will also receive purified pAAV-CAG-eYFP plasmid DNA.
CAG-driven eYFP expression control. These AAV preparations are suitable purity for injection into animals.
Ready-to-use AAV Retrograde particles produced from pAAV-CAG-eYFP (#104055). In addition to the viral particles, you will also receive purified pAAV-CAG-eYFP plasmid DNA.
CAG-driven eYFP expression control. These AAV were produced with a retrograde serotype, which permits retrograde access to projection neurons. These AAV preparations are suitable purity for injection into animals.
Ready-to-use AAV PHP.eB particles produced from pAAV-CAG-eYFP (#104055). In addition to the viral particles, you will also receive purified pAAV-CAG-eYFP plasmid DNA.
CAG-driven eYFP expression control. These AAV were produced with the PHPeB serotype, which permits efficient transduction of the central nervous system.
These AAV preparations are suitable purity for injection into animals.
Ready-to-use AAV PHP.V1 particles produced from pAAV-CAG-DIO-EYFP (#104052). In addition to the viral particles, you will also receive purified pAAV-CAG-DIO-EYFP plasmid DNA.
CAG-driven, Cre-dependent expression of EYFP. These AAV were produced with the PHP.V1 serotype, which permits efficient transduction of brain vascular cells. These AAV preparations are suitable purity for injection into animals.
Contains bacterial constructs for E3 autoubiquitination assay, including expression cassettes containing ubiquitin and the E1 UBA1 in combination with all Arabidopsis thaliana E2s
Modular system for integrating large DNA fragments into defined genomic locations. Canonical NHEJ mechanism. For tagging of endogenous proteins with luciferase, fluorescent proteins, epitope tags
Ready-to-use AAV9 particles produced from pAAV-double floxed-eNpHR-EYFP-WPRE-pA (#20949). In addition to the viral particles, you will also receive purified pAAV-double floxed-eNpHR-EYFP-WPRE-pA plasmid DNA.
EF1a-driven, cre-dependent eNpHR EYFP for optogenetic inhibition. These AAV preparations are suitable purity for injection into animals.
Ready-to-use AAV8 particles produced from pAAV-CAG-FLEX-rc [Jaws-KGC-tdTomato-ER2] (#84446). In addition to the viral particles, you will also receive purified pAAV-CAG-FLEX-rc [Jaws-KGC-tdTomato-ER2] plasmid DNA.
CAG-driven, Cre-dependent expression of Jaws-KGC-tdTomato-ER2 for optogenetic inhibition. These AAV preparations are suitable purity for injection into animals.