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 or amino acid 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 or protein-translated 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.
tblastn: Designed for comparing protein sequences against a translated nucleotide sequence database.
Helpful for finding plasmids with codon-optimized sequences.
tblastn-fast: A faster version of tblastn that may return results more quickly, but is less sensitive
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-nEF-Con/Fon-NpHR3.3-EYFP (#137152). In addition to the viral particles, you will also receive purified pAAV-nEF-Con/Fon-NpHR3.3-EYFP plasmid DNA.
nEF-driven, Cre and Flp-dependent expression of NpHR3.3-EYFP for optogenetic inhibition. These AAV preparations are suitable purity for injection into animals.
Contributes a cassette containing an SV40 polyA signal as the 3’-module during MultiSite Gateway cloning of chimeric cDNAs, when a peptide module at the C-terminal end is not required.
Expression of G protein-coupled receptors for PRESTO-Tango: parallel receptorome expression and screening via transcriptional output, with transcriptional activation following arrestin translocation
NAT-marked pSNR52 promoter fragment for use in gRNA expression cassette stitching PCR; for use with pADH119, 139, or 147 to generate target-specific gRNA expression cassette.
Expresses truncated C-terminal SpCas9 domain fused to a GyrA intein, flanked by ITRs for AAV packaging. Combine with N-Terminal Split Cas9 Gyra Intein for full length SpCas9 production
A YFP-based chloride sensor with enhanced chloride sensitivity, photostability and reduced pH interference. The sequence of mClY is EYFP-F46L/Q69K/H148Q/I152L/V163S/S175G/S205V/A206K.
Homology repair plasmid for endogenous tagging of AP1muA at the C-terminus with monomeric StayGold. Contains a hygromycin resistance cassette for selection of edited cells
Ready-to-use AAV Retrograde particles produced from pGP-AAV-syn-FLEX-jGCaMP8s-WPRE (#162377). In addition to the viral particles, you will also receive purified pGP-AAV-syn-FLEX-jGCaMP8s-WPRE plasmid DNA.
Syn-driven, Cre-dependent expression of calcium sensor GCaMP8s (more sensitive). 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.