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 AAV1 particles produced from pAAV-Ef1a-DIO-ChRmine-mScarlet-WPRE (#130998). In addition to the viral particles, you will also receive purified pAAV-Ef1a-DIO-ChRmine-mScarlet-WPRE plasmid DNA.
Ef1a-driven, Cre-dependent expression of ChRmine-mScarlet. These AAV preparations are suitable purity for injection into animals.
Ready-to-use AAV9 particles produced from pAAV-hSyn-GRAB_NE1m (#123308). In addition to the viral particles, you will also receive purified pAAV-hSyn-GRAB_NE1m plasmid DNA.
Synapsin-driven expression of GRAB-NE1m norepinephrine sensor in neurons. These AAV preparations are suitable purity for injection into animals.
Plasmid for stable expression of wild type bacterial RNase HI tagged with NES and EGFP that can be used to specifically degrade the DNA-RNA hybrids in the cytoplasm.
This plasmid contains human codon optimized sequence of Lactobacillus brevis mutant of a water-forming oxidase that can be used to increase NADP+/NADPH ratio in mammalian cells.
CRISPR Cas9 KO library targets 660 ubiquitination-related proteins, including all major E1, E2, E3 and deubiquitinating enzymes, as well as other ubiquitination-related proteins.
Lentiviral expression of an insert from EF1 promoter and co-expression of EGFP.
See Depositor Comments for additional information regarding plasmid sequence.
Lentiviral vector for overexpressing transcription factor ORFs with unique 24-bp barcodes. Barcodes facilitate identification of transcription factors in pooled screens.
3rd generation lentiviral plasmid for inducible expression of shRNA; puromycin selection. See manual for detailed protocols. No further technical support is available from the depositing laboratory.