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.
The minimum query length is 30 nucleotides. Support for short sequence queries is under development.
Tips for Success
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. 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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rhaBAD, a rhamnose-inducible promoter, YFP, an E. coli-Synechocystis shuttle vector, chromosomal-integration sites. Allows precise & sustained gene expression in cyanobacteria.
This plasmid encodes a protein (Cys-30nmSAH-SPYcatcher) that is used for generating functionalized magnetic beads for MagIC-cryo-EM, a method for single-particle cryo-EM analysis on magnetic beads.
Lentiviral vector for overexpressing transcription factor ORFs with unique 24-bp barcodes. Barcodes facilitate identification of transcription factors in pooled screens.
Broad host-range bacterial expression vector with constitutive Pc promoter. Provides E. coli TorA signal peptide in frame with mNeonGreen (codon optimized for expression in P. fluorescens); for targeting mNeonGreen to the periplasm
vector for encoding an engineered glycosylase-based cytosine (C) base editor (gCBEv2) driven by EF1a promoter, guide RNAs compatible with SpCas9 driven by hU6, mCherry driven by CBh promoter
A plasmid containing the codon-optimized OsTIR1-F74A, which is under the control of adh1 promoter. It served as one of the F-box protein expression plasmids in AID system.
Produces an mTurquoise-antiFRET-mScarlet3 fusion protein in bacteria and in mamallian cells it produces 1:1 unfused mTurquoise2 and mScarlet3 FPs for ratiometric analysis
Bimolecular fluorescence complementation (BiFC) vector for transient expression of N-truncated Venus in plants. Unique nucleotide sequences Uc and Ud for cloning at N terminus of Vn.