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.
Holiday Schedule: Addgene will be closed December 24th - January 1st. Order processing will resume on January 2, 2026. For questions about estimated ship dates, please feel free to track your order status or contact [email protected].
This website uses cookies to ensure you get the best experience. By continuing to use this site, you agree to the use of cookies.
Please note: Your browser does not support the features used on Addgene's website. You may not be able to create an account or request plasmids through this website until you upgrade your browser.
Learn more
Please note: Your browser does not fully support some of the features used on Addgene's website. If you run into any problems registering, depositing, or ordering please contact us at [email protected].
Learn more
... are two heart defects that are 50 times more prevalent in women with TS. “The goal of our study is to...chromosome gene dosage in TS cells as a first step to reverse the developmental defects that cause heart problems...monitor intracellular signaling,” says Hébert. Previous research has shown that GNB1 mutations lead to...
...next-generation sequencing. Sequencing the 16S rRNA reveals the identity of the organisms present while sequencing...16S rRNA isolated from the microbial community) reveals the RBS and allows translation of the reporter ...Cameron, et al. "A distributed cell division counter reveals growth dynamics in the gut microbiota." Nature ...
...Advanced microscopy, University of Amsterdam.
The previous post in this series described a practical approach...photostable fluorescent protein.
Photobleaching is the irreversible destruction of a fluorophore under the influence...photobleaching, fluorescent proteins may display reversible intensity changes (Shaner et al, 2008; Bindels...
...marriage of two simple platforms
CRISPR has revolutionized how we decode the genome by making it easy ...CACCGNNNNNNNNNNNNNNNNNNNGTTTGGGTCTTCGAGAAGACCTATTCXXXXXXXXC -3’;
Reverse oligo: 5’- AATTGXXXXXXXXGAATAGGTCTTCTCGAAGACCCAAACNNNNNNNNNNNNNNNNNNNC... Traver, et al. "High-Resolution CRISPR Screens Reveal Fitness Genes and Genotype-Specific Cancer Liabilities...
...dust since the digital music revolution hit. I predict a similar revolution for antibodies. Recombinant...expression of the mAb-encoding genes or fail to revive after cryopreservation (Bradbury & Plückthun, 2015a...
...Editing Technology at Beam Therapeutics, used a previously developed bacterial selection strategy (Gaudelli...more efficient. Informed by these mutations and previously described TadA mutations (Gaudelli et al., 2017...mitigated with the expression of fetal hemoglobin. Previous studies have shown that one base change in the...
...field forward to where it is today. Below we will review some of the CRISPR-based editing therapies that...’s own cells that have been modified ex vivo, previously edited healthy donor cells can be delivered immediately...safety is important for allogenic therapies to prevent a graft vs. host response. Off-target effects are...
...RNAs. Annual Review of Biochemistry. 2012;81(Volume 81, 2012):145-166. doi:10.1146/annurev-biochem-051410...transcription start site function would also help to reveal the impacts of a lncRNA on nearby genes and its...
...mutations in the PMM2 gene. Videira’s group recently reviewed and reported that PMM2-CDG patients suffer from... congenital disorders of glycosylation (CDG): a review. J. Inherit. Metab. Dis. 39, 765–780 (2016). PubMed...acetylcholine. Given its unique molecular biology and previous approval by the FDA, GdnHCl could, in principle...
...therefore already have ways to prevent AAV infection. For example, prevalence of neutralizing antibodies ...or potentially curing human diseases that were previously thought to be incurable. Rapid advances in next...
...symposia held across the USA during this time have revealed that young scientists are aware of, and are engaged...Academy of Sciences. “The Postdoctoral Experience Revisited” 2014 Appendix B p93-95). For those advocating...25653845. Pubmed Central PMCID: PMC4304227.
4. Revitalizing biomedical research: recommendations from the...
...a table. It adds a formality and distance that prevents interaction with each other and the audience. ...moderator takes control
It is the moderator's job to prevent anyone from derailing the show. The moderator must... active at all times keep things moving and to prevent any one panelist or audience member from taking...
...for dicots. NC: nucleocapsid RNA chaperone, RT: reverse transcriptase. Right: T1 tomato plants that inherited...genetically-encoded voltage indicator (GEVI) than previous versions. ASAP5 can be imaged using one- or two-photon...across many cell types in varying conditions, revealing context-dependent responses and molecular patterns...
... series from Subach et al.) were derived from previously developed monomeric fluorescent proteins mKO ...dense-core vesicle exocytosis in neuroendocrine cells revealed by newly developed monomeric fluorescent timer.... German. "Chronology of islet differentiation revealed by temporal cell labeling." Diabetes 58.8 (2009...
...Inspired Engineering.
CRISPR/Cas9 technology has revolutionized the fields of molecular biology and bioengineering...which variant of Cas9. To circumvent this problem, previous studies have proposed the concurrent use of “orthogonal...gene of interest, Cas9 forms a steric block that prevents RNA polymerase from efficiently transcribing the...
...editor (typically a Cas9 H840A nickase fused to a reverse transcriptase) together with a prime editing guide...sequence containing a primer binding site and a reverse transcription template (RTT). The design of the...and highly versatile genome manipulation. Nature Reviews Genetics, 24(3), Article 3. https://doi.org/10.1038...