Blasticidina S HCl (10 mg/ml)
Blasticidina S HCl (10 mg/ml)
Gibco™

Blasticidina S HCl (10 mg/ml)

La blasticidina S es un antibiótico peptídico nucleósido aislado de Streptomyces griseochromogenes. Es un potente inhibidor de la síntesis deMás información
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Número de catálogoCantidad
A111390310 x 1 mL
A111390220 mL
Número de catálogo A1113903
Precio (MXN)
-
Cantidad:
10 x 1 mL
La blasticidina S es un antibiótico peptídico nucleósido aislado de Streptomyces griseochromogenes. Es un potente inhibidor de la síntesis de proteínas tanto en células procariotas como eucariotas, pero también es activo contra hongos, nematodos, y células tumorales. La blasticidina S actúa bloqueando la hidrólisis de peptidil-ARNt inducida por factores de liberación e inhibe la formación de enlaces peptídicos. Se utiliza como agente de selección tanto en células de mamíferos como en células bacterianas. La concentración de trabajo recomendada oscila entre 1 y 30 μg/ml en función de la línea de células y 25–100 μg/ml para selección bacteriana. La muerte celular se produce rápidamente, y las líneas de células de mamíferos estables y resistentes a la blasticidina se pueden generar en menos de una semana.

La resistencia a la blasticidina S se debe a BSR y BSD, aisladas de Bacillus cereus K55-S y Aspergillus terreus, respectivamente. El gen de resistencia a la BSR codifica la blasticidina S deaminasa, que cataliza la conversión de blasticidina S en deaminohidroxiblasticidina S. La deaminohidroxiblasticidina S es un derivado sin actividad biológica de la blasticidina S y no interactúa con los ribosomas procariotas o eucariotas ni los inhibe. El gen de resistencia a la BSD también codifica una blasticidina S deaminasa, que cataliza una reacción similar a la BSR deaminasa. Con fines de selección de bacterias, el contenido de sal del medio LB debe mantenerse bajo (inferior al 90 mM) y el pH no debe superar los 7,0 para conservar la actividad de la basticidina S. Se recomienda una curva de destrucción para determinar la concentración mínima efectiva de blasticidina S para eliminar células no resistentes.

Aplicaciones
Consultar protocolos detallados sobre la selección de blasticidina en células de mamíferos, E. coli y levadura.
Para uso exclusivo en investigación. No apto para uso en procedimientos diagnósticos.
Especificaciones
Tipo de célulaCélulas eucariotas, células procariotas
Concentración10 mg/mL
Tipo de cultivoCultivo celular de mamíferos, cultivo celular de insectos
Línea de productosGibco
Cantidad10 x 1 mL
Duración de almacenamiento9 meses
FormularioLíquido
Tipo de productoBlasticidina
EsterilidadEstéril con filtro
Con aditivosÁcido 4-(2-hidroxietil)piperazin-1-iletanosulfónico (HEPES)
Unit SizeEach
Contenido y almacenamiento
Condiciones de almacenamiento: De – 5 °C a – 20 °C (proteger de la luz)
Condiciones de envío: Hielo seco
Vida útil: 9 meses a partir de la fecha de fabricación

Preguntas frecuentes

Which of your antibiotics (Geneticin, Zeocin, Hygromycin B, Blasticidin, and Puromycin) can be used together for stable selection in mammalian cells?

All of our antibiotics (Geneticin, Zeocin, Hygromycin B, Blasticidin, and Puromycin) can be used together for making multiple stable cell lines. However, kill curves will need to be performed for each combination of antibiotics since sensitivity to a given antibiotic tends to increase when combined with other antibiotics.

What are the recommended concentrations of antibiotics to use for selection in prokaryotes and eukaryotes?

For best results, optimal concentrations for selection should be determined empirically in each unique experiment through dose response curves. However, to get a general idea of concentrations that have worked for individual cell types, please click on the following url: http://www.thermofisher.com/us/en/home/life-science/cell-culture/transfection/selection.html or type in “Selection Antibiotics” into our main search on www.thermofisher.com.

What is the mode of action on the following antibiotics: Blasticidin, Geneticin (G418), Hygromycin, and Zeocin?

Blasticidin: Nucleoside Inhibits protein synthesis in prokaryotic and eukaryotic cells by interfering with peptidyl transfer reaction of protein synthesis, causing early termination of translation.

Geneticin (G418): Aminoglycoside Blocks protein synthesis in mammalian cells by interfering with ribosomal function.

Hygromycin: Aminocyclitol Inhibits protein synthesis by disrupting translocation and promoting mistranslation.

Zeocin: Intercalates with DNA and cleaves it.

What is the optimal pH of low salt LB for LB + blasticidin plates?

We recommend a pH of 7 or less and half the normal amount of NaCl in your LB media or plates.

See the following paper for details on optimal conditions: Yamaguchi et al (1965) Inhibition of Protein Synthesis by Blasticidin S. Journal of Biochemistry (Tokyo) Volume 57: pp 667-677.

How long can Blasticidin be stored at 4 degrees C after thawing? Does the unused portion have to be discarded after thawing?

Blasticidin is stable for 6 months when stored at 4 degrees C. Discard remaining material after this time.

Citations & References (7)

Citations & References
Abstract
Prioritization of cancer therapeutic targets using CRISPR-Cas9 screens.
Authors:Behan FM, Iorio F, Picco G, Gonçalves E, Beaver CM, Migliardi G, Santos R, Rao Y, Sassi F, Pinnelli M, Ansari R, Harper S, Jackson DA, McRae R, Pooley R, Wilkinson P, van der Meer D, Dow D, Buser-Doepner C, Bertotti A, Trusolino L, Stronach EA, Saez-Rodriguez J, Yusa K, Garnett MJ
Journal:Nature
PubMed ID:30971826
'Functional genomics approaches can overcome limitations-such as the lack of identification of robust targets and poor clinical efficacy-that hamper cancer drug development. Here we performed genome-scale CRISPR-Cas9 screens in 324 human cancer cell lines from 30 cancer types and developed a data-driven framework to prioritize candidates for cancer therapeutics. We integrated cell ... More
ZFP30 promotes adipogenesis through the KAP1-mediated activation of a retrotransposon-derived Pparg2 enhancer.
Authors:Chen W, Schwalie PC, Pankevich EV, Gubelmann C, Raghav SK, Dainese R, Cassano M, Imbeault M, Jang SM, Russeil J, Delessa T, Duc J, Trono D, Wolfrum C, Deplancke B
Journal:Nat Commun
PubMed ID:31000713
'Krüppel-associated box zinc finger proteins (KZFPs) constitute the largest family of mammalian transcription factors, but most remain completely uncharacterized. While initially proposed to primarily repress transposable elements, recent reports have revealed that KFZPs contribute to a wide variety of other biological processes. Using murine and human in vitro and in ... More
Genome-wide mapping reveals that deoxyuridine is enriched in the human centromeric DNA.
Authors:Shu X, Liu M, Lu Z, Zhu C, Meng H, Huang S, Zhang X, Yi C
Journal:Nat Chem Biol
PubMed ID:29785056
'Uracil in DNA can be generated by cytosine deamination or dUMP misincorporation; however, its distribution in the human genome is poorly understood. Here we present a selective labeling and pull-down technology for genome-wide uracil profiling and identify thousands of uracil peaks in three different human cell lines. Surprisingly, uracil is ... More
CRISPR-Cas9 epigenome editing enables high-throughput screening for functional regulatory elements in the human genome.
Authors:Klann TS, Black JB, Chellappan M, Safi A, Song L, Hilton IB, Crawford GE, Reddy TE, Gersbach CA
Journal:Nat Biotechnol
PubMed ID:28369033
Large genome-mapping consortia and thousands of genome-wide association studies have identified non-protein-coding elements in the genome as having a central role in various biological processes. However, decoding the functions of the millions of putative regulatory elements discovered in these studies remains challenging. CRISPR-Cas9-based epigenome editing technologies have enabled precise perturbation ... More
Optogenetic control of kinetochore function.
Authors:Zhang H, Aonbangkhen C, Tarasovetc EV, Ballister ER, Chenoweth DM, Lampson MA
Journal:Nat Chem Biol
PubMed ID:28805800
Kinetochores act as hubs for multiple activities during cell division, including microtubule interactions and spindle checkpoint signaling. Each kinetochore can act autonomously, and activities change rapidly as proteins are recruited to, or removed from, kinetochores. Understanding this dynamic system requires tools that can manipulate kinetochores on biologically relevant temporal and ... More