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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Ready-to-use AAV8 particles produced from pAAV-hSyn Con/Fon EYFP (#55650). In addition to the viral particles, you will also receive purified pAAV-hSyn Con/Fon EYFP plasmid DNA.
Synapsin driven, Cre and Flp-dependent EYFP expression.
These AAV preparations are suitable purity for injection into animals.
Ready-to-use AAV8 particles produced from pAAV-nEF-Con/Foff 2.0-ChR2-EYFP (#137163). In addition to the viral particles, you will also receive purified pAAV-nEF-Con/Foff 2.0-ChR2-EYFP plasmid DNA.
nEF-driven, Cre-dependent expression of ChR2-EYFP for optogenetic activation (inhibited in the presence of Flp recombinase). These AAV preparations are suitable purity for injection into animals.
vector for encoding a human codon-optimized dead Cas13X (dCas13X) driven by CBh promoter, guide RNAs compatible with Cas13X driven by hU6, EGFP driven by SV40 promoter, and mCherry driven by SV40 promoter
The plasmid contains a 312 bp DNA fragment that contained 5 canonical E-boxes (GCCACGTGCA) spaced by 50 nucleotides and cloned into pGL4.23[luc2/minP] (XhoI/HindIII).
Ready-to-use AAV9 particles produced from pAAV_hSynapsin_psychLight2 (#163909). In addition to the viral particles, you will also receive purified pAAV_hSynapsin_psychLight2 plasmid DNA.
Synapsin-driven expression of the genetically encoded fluorescent sensor psychLight2 to detect behaviorally relevant serotonin release. These AAV preparations are suitable purity for injection into animals.
To fuse your protein of interest to the N-terminus of BioID2 and use in proximity-dependent biotin identification (BioID); MCS and a flexible 25nm GS linker are present upstream of BioID2 and HA tags.
integrative plasmid enabling constitutive expression of mKate2 in Streptococcus pyogenes, integrates into the transcriptionally silent locus Spy_1078 via homologous recombination