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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SpCas9 with 2A-Puro and a cloning backbone for 2 custom gRNAs which can be cloned in via a one-step reaction. For generation of double knock-outs and large deletions in a single plasmid system.
Ready-to-use AAV PHP.eB particles produced from pAAV-hSyn-Cre-P2A-dTomato (#107738). In addition to the viral particles, you will also receive purified pAAV-hSyn-Cre-P2A-dTomato plasmid DNA.
hSyn-driven expression of Cre and dTomato (physically separate). 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 Retrograde particles produced from pAAV-hSyn-DIO-hM4D(Gi)-mCherry (#44362). In addition to the viral particles, you will also receive purified pAAV-hSyn-DIO-hM4D(Gi)-mCherry plasmid DNA.
Syn-driven, Cre-dependent, hM4D(Gi) receptor with an mCherry reporter for CNO-induced neuronal inhibition. 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 AAV1 particles produced from pAAV.Syn.GCaMP6f.WPRE.SV40 (#100837). In addition to the viral particles, you will also receive purified pAAV.Syn.GCaMP6f.WPRE.SV40 plasmid DNA.
Syn-driven GCaMP6f calcium sensor.
These AAV preparations are suitable purity for injection into animals.
Ready-to-use AAV9 particles produced from pAAV-hSyn-GRAB_ACh3.0 (#121922). In addition to the viral particles, you will also receive purified pAAV-hSyn-GRAB_ACh3.0 plasmid DNA.
Syn-driven expression of the genetically-encoded fluorescent acethycholine(ACh) sensor GRAB-ACh3.0. These AAV preparations are suitable purity for injection into animals.
Ready-to-use AAV6 particles produced from pAAV-CAG-GFP (#37825). In addition to the viral particles, you will also receive purified pAAV-CAG-GFP plasmid DNA.
CAG-driven GFP expression. These AAV preparations are suitable purity for injection into animals.
Ready-to-use AAV9 particles produced from pGP-AAV-syn-jGCaMP8f-WPRE (#162376). In addition to the viral particles, you will also receive purified pGP-AAV-syn-jGCaMP8f-WPRE plasmid DNA.
Syn-driven expression of ultrafast calcium sensor GCaMP8f. These AAV preparations are suitable purity for injection into animals.
Ready-to-use AAV5 particles produced from pAAV-hSyn-hM4D(Gi)-mCherry (#50475). In addition to the viral particles, you will also receive purified pAAV-hSyn-hM4D(Gi)-mCherry plasmid DNA.
hSyn-driven hM4D(Gi) receptor with an mCherry reporter for CNO-induced neuronal silencing. These AAV preparations are suitable purity for injection into animals.
Lentiviral vector for overexpressing transcription factor ORFs with unique 24-bp barcodes. Barcodes facilitate identification of transcription factors in pooled screens.
Ready-to-use AAV Retrograde particles produced from pAAV-hSyn-hM3D(Gq)-mCherry (#50474). In addition to the viral particles, you will also receive purified pAAV-hSyn-hM3D(Gq)-mCherry plasmid DNA.
hSyn-driven hM3D(Gq) receptor with an mCherry reporter for CNO-induced neuronal activation. 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 AAV5 particles produced from pAAV-GFAP-hM3D(Gq)-mCherry (#50478). In addition to the viral particles, you will also receive purified pAAV-GFAP-hM3D(Gq)-mCherry plasmid DNA.
GFAP-driven hM4D(Gq) receptor with an mCherry reporter for CNO-induced neuronal activation. These AAV preparations are suitable purity for injection into animals.
The encoded protein is the anti-HA scFv (anti-HA frankenbody) fused with the mEGFP. It can be used to track mature and nascent HA tagged proteins in living organism.
Ready-to-use AAV Retrograde particles produced from pAAV-hSyn-Cre-P2A-dTomato (#107738). In addition to the viral particles, you will also receive purified pAAV-hSyn-Cre-P2A-dTomato plasmid DNA.
hSyn-driven expression of Cre and dTomato (physically separate). 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 Retrograde particles produced from pAAV-FLEX-tdTomato (#28306). In addition to the viral particles, you will also receive purified pAAV-FLEX-tdTomato plasmid DNA.
Cre-dependent (FLEX) tdTomato expression. 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.
This Cre-ERT2 expressing construct can be used to inducibly recombine loxp sites. It can be used with poly-loxP containing plasmids to generate timestamp barcodes useful for linage tracing
Ready-to-use AAV5 particles produced from pAAV-hSyn-DIO-mCherry (#50459). In addition to the viral particles, you will also receive purified pAAV-hSyn-DIO-mCherry plasmid DNA.
hSyn-driven, Cre-dependent mCherry-expression control. These AAV preparations are suitable purity for injection into animals.