应用；   A nucleoside antibiotic supplied at 10 mg/mL in HEPES Buffer for use as a selection antibiotic.  

CAS号码:   3513-03-9  

纯度:   ≥98%  

分子量:   458.90  

分子式:   C₁₇H₂₆N₈O₅·HCl  

Supplemental Information:   This is classified as a Dangerous Good for transport and may be subject to additional shipping charges.  

* 参考分析证明 大量特定数据 (包括水 含量).

介绍 技术信息 安全信息 安全技术说明书和分析证明书

Blasticidin S HCl solution is supplied ready to use at 10 mg/mL in HEPES Buffer and Sterile Filtered. Blasticidin S is a nucleoside antibiotic isolated from Streptomyces griseochromogenes which inhibits protein synthesis in both prokaryotic and eukaryotic cells. Blasticidin S acts quickly by inhibiting peptide bond formation by the ribosome. Resistance is conferred by expression of one of two Blasticidin S deaminase genes: BSD from Aspergillus terreus or bsr from Bacillus cereus. These deaminases convert Blasticidin S to a nontoxic deaminohydroxy derivative.

Blasticidin S is used for the prevention of contamination of cell cultures. The recommended working concentration ranges from 1–20 µg/mL depending on the cell line.

Blasticidin S may also be used as a bacterial selection antibiotic in the concentration range of 50–100 µg/mL. To maintain the activity of Blasticidin S for selection purposes, the salt content of the LB medium must remain low (<90 mM) and the pH should not exceed 7.0.

参考文献

1. Yamaguchi, H., Yamamoto, C. and Tanaka, N. 1965. Inhibition of protein synthesis by blasticidin S. I. Studies with cell-free systems from bacterial and mammalian cells. J. Biochem. 57(5): 667-677. PMID: 4953866
2. Izumi, M., Miyazawa, H., Kamakura, T., Yamaguchi, I., Endo, T. and Hanaoka, F. 1991. Blasticidin S-resistance gene (bsr): a novel selectable marker for mammalian cells. Exp. Cell Res. 197(2): 229-233. PMID: 1720391
3. Kimura, M., Takatsuki, A. and Yamaguchi, I. 1994. Blasticidin S deaminase gene from Aspergillus terreus (BSD): a new drug resistance gene for transfection of mammalian cells. Biochim. Biophys. Acta. 1219(3): 653-659. PMID: 7948022
4. Kim, H., Ishidate, T., Ghanta, K.S., Seth, M., Conte, D., Shirayama, M. and Mello, C.C. 2014. A co-CRISPR strategy for efficient genome editing in Caenorhabditis elegans. Genetics. 197(4): 1069-1080. PMID: 24879462

用法 :

Caution    
Toxic if swallowed. Contains Blasticidin S. Avoid contact with skin and eyes. Wear suitable protective clothing and gloves. In case of accident or if you feel unwell, seek medical advice immediately.    
   
    Storing Blasticidin    
&bull; Do not subject Blasticidin solution to multiple freeze-thaw cycles (do not store in a frost-free freezer).    
&bull; When stored properly at &ndash;5&deg;C to &ndash;20&deg;C, Blasticidin is stable for up to 9 months. Store medium containing Blasticidin at 4&deg;C for up to 2 weeks.    
&bull; Upon thawing, use what you need and discard any unused portion.    
   
    Blasticidin Selection in E. coli    
For selection of Blasticidin-resistant E. coli, use Low Salt LB medium (10 g Tryptone, 5 g sodium chloride, 5 g yeast extract) containing 50&ndash;100 &micro;g/mL Blasticidin. Optimize the Blasticidin concentration for the bacterial strain being used. If a lawn of bacteria forms on the Low Salt LB plate instead of individual bacterial colonies, increase the Blasticidin concentration in the plates to 100 &micro;g/mL.    
Note: The salt concentration of the medium must remain low (<90 mM). Failure to lower the salt content of your LB medium inhibits Blasticidin, and prevents selection unless a higher Blasticidin concentration is used.    
   
    Blasticidin Selection in Yeast    
The concentration of Blasticidin required for selection in yeast varies depending on the species, strain, and type of medium used. Use a range of 25&ndash;300 &micro;g/mL Blasticidin for selection in yeast. Standard protocols recommend performing a kill curve for each species, strain, and medium used to determine the appropriate Blasticidin concentration to use for selecting resistant cells.    
   
    Blasticidin Selection in Mammalian Cells    
The Blasticidin concentration required for selection in mammalian cells varies depending on the cell line used. Use 2&ndash;10 &micro;g/mL Blasticidin for selection in mammalian cells. Standard protocols recommend performing a kill curve as described below to determine the appropriate Blasticidin concentration to use for selecting resistant cells.    
   
    Determining blasticidin sensitivity    
1. Plate cells at approximately 25% confluency. Prepare a set of 6 plates. Allow cells to adhere overnight.    
2. The next day, substitute culture medium with medium containing varying concentrations of Blasticidin (e.g. 0, 2, 4, 6, 8, 10 &micro;g/mL Blasticidin).    
3. Replenish the selective media every 3&ndash;4 days, and observe the percentage of surviving cells.    
4. Determine the appropriate concentration of Blasticidin that kills the cells within 10&ndash;14 days after addition of the antibiotic.�

规划 :

10 mg/mL in HEPES Buffer, Sterile Filtered

物理状态 :

Liquid

来源于 :

Streptomyces griseochromogenes  

保存 :

Store at -20&deg; C

仅供科研使用。不可用于诊断或治疗。  

德国水公害等级 :

2

运输 :

UN 3172, Class 6.1, Packing group III

PubChem CID :

25078183

MDL 号码 :

MFCD02091640

SMILES :

CN(CC[C@H](CC(=O)N[C@H]1C=C[C@@H](O[C@@H]1C(=O)O)N2C=CC(=NC2=O)N)N)C(=N)N.Cl