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Research Article 


Cost effective purification of intein based syntetic cationic antimicrobial peptide expressed in cold shock expression system using salt inducible E. coli GJ1158

K Seetha Ram, M Mary Vijaya Kumar, S Divya Sri, N Bhargava Ramudu, J B Peravali, Kk Pulicherla.


Cited By:7

Abstract
Objective: Synthetic cationic antimicrobial peptide (SC-AMP) is an important and upcoming therapeutic molecule against conventional antibiotics. In this study, an attempt was made to purify the SC-AMP without the enzymatic cleavage of the affinity tag, by using an intein-based system.
Methods: The intein sequence was amplified from pTYB11 vector using PCR methodologies and the N-terminal of intein was ligated with SC-AMP. The designed construct, intein-SC-AMP was cloned into MCS region of cold shock expression vector, pCOLDI and the recombinant peptide was purified on a chitin affinity column by cleaving intein with 50 mM DTT without applying enzymatic cleavage. Later the peptide was quantified and its antibacterial activity of the purified peptide was studied using well diffusion method.
Results: Initially, intein-SC-AMP was expressed as a fusion protein in both IPTG inducible E. coli BL21(DE3) and salt inducible E. coli GJ1158. Single step purification using CBD (chitin binding domain) - intein tag in salt inducible E. coli GJ1158, yields the SC-AMP in the soluble form at a concentration of 208 mg/L. The antibacterial activity and minimal inhibitory concentration (MIC) of the purified SC-AMP was studied against both Gram positive and Gram negative microorganisms.
Conclusion: For the first time, single step purification of soluble SC-AMP was carried out using chitin-binding domain affinity tag in salt inducible E. coli GJ1158 without an application of enzymatic cleavage. J Microbiol Infect Dis 2014;4(1):13-19


 
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How to Cite this Article
Pubmed Style

Ram KS, Kumar MMV, Sri SD, Ramudu NB, Peravali JB, Pulicherla K. Cost effective purification of intein based syntetic cationic antimicrobial peptide expressed in cold shock expression system using salt inducible E. coli GJ1158. J Microbiol Infect Dis. 2014; 4(1): 13-19 . doi:10.5799/jmid2014.01.0117

Web Style

Ram KS, Kumar MMV, Sri SD, Ramudu NB, Peravali JB, Pulicherla K. Cost effective purification of intein based syntetic cationic antimicrobial peptide expressed in cold shock expression system using salt inducible E. coli GJ1158. https://www.jmidonline.org/?mno=302657068 [Access: April 22, 2025]. doi:10.5799/jmid2014.01.0117

AMA (American Medical Association) Style

Ram KS, Kumar MMV, Sri SD, Ramudu NB, Peravali JB, Pulicherla K. Cost effective purification of intein based syntetic cationic antimicrobial peptide expressed in cold shock expression system using salt inducible E. coli GJ1158. J Microbiol Infect Dis. 2014; 4(1): 13-19 . doi:10.5799/jmid2014.01.0117


Vancouver/ICMJE Style

Ram KS, Kumar MMV, Sri SD, Ramudu NB, Peravali JB, Pulicherla K. Cost effective purification of intein based syntetic cationic antimicrobial peptide expressed in cold shock expression system using salt inducible E. coli GJ1158. J Microbiol Infect Dis. (2014), [cited April 22, 2025]; 4(1): 13-19 . doi:10.5799/jmid2014.01.0117


Harvard Style

Ram, K. S., Kumar, . M. M. V., Sri, . S. D., Ramudu, . N. B., Peravali, . J. B. & Pulicherla, . K. (2014) Cost effective purification of intein based syntetic cationic antimicrobial peptide expressed in cold shock expression system using salt inducible E. coli GJ1158. J Microbiol Infect Dis, 4 (1), 13-19 . doi:10.5799/jmid2014.01.0117


Turabian Style

Ram, K Seetha, M Mary Vijaya Kumar, S Divya Sri, N Bhargava Ramudu, J B Peravali, and Kk Pulicherla. 2014. Cost effective purification of intein based syntetic cationic antimicrobial peptide expressed in cold shock expression system using salt inducible E. coli GJ1158. Journal of Microbiology and Infectious Diseases, 4 (1), 13-19 . doi:10.5799/jmid2014.01.0117


Chicago Style

Ram, K Seetha, M Mary Vijaya Kumar, S Divya Sri, N Bhargava Ramudu, J B Peravali, and Kk Pulicherla. "Cost effective purification of intein based syntetic cationic antimicrobial peptide expressed in cold shock expression system using salt inducible E. coli GJ1158." Journal of Microbiology and Infectious Diseases 4 (2014), 13-19 . doi:10.5799/jmid2014.01.0117


MLA (The Modern Language Association) Style

Ram, K Seetha, M Mary Vijaya Kumar, S Divya Sri, N Bhargava Ramudu, J B Peravali, and Kk Pulicherla. "Cost effective purification of intein based syntetic cationic antimicrobial peptide expressed in cold shock expression system using salt inducible E. coli GJ1158." Journal of Microbiology and Infectious Diseases 4.1 (2014), 13-19 . Print. doi:10.5799/jmid2014.01.0117


APA (American Psychological Association) Style

Ram, K. S., Kumar, . M. M. V., Sri, . S. D., Ramudu, . N. B., Peravali, . J. B. & Pulicherla, . K. (2014) Cost effective purification of intein based syntetic cationic antimicrobial peptide expressed in cold shock expression system using salt inducible E. coli GJ1158. Journal of Microbiology and Infectious Diseases, 4 (1), 13-19 . doi:10.5799/jmid2014.01.0117


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