A new generation of recombinant polypeptides combines multiple protein domains for effective antimicrobial activity
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Publication date
2020-06-05ISSN
1475-2859
Abstract
Background
Although most of antimicrobial peptides (AMPs), being relatively short, are produced by chemical synthesis, several AMPs have been produced using recombinant technology. However, AMPs could be cytotoxic to the producer cell, and if small they can be easily degraded. The objective of this study was to produce a multidomain antimicrobial protein based on recombinant protein nanoclusters to increase the yield, stability and effectivity.
Results
A single antimicrobial polypeptide JAMF1 that combines three functional domains based on human α-defensin-5, human XII-A secreted phospholipase A2 (sPLA2), and a gelsolin-based bacterial-binding domain along with two aggregation-seeding domains based on leucine zippers was successfully produced with no toxic effects for the producer cell and mainly in a nanocluster structure. Both, the nanocluster and solubilized format of the protein showed a clear antimicrobial effect against a broad spectrum of Gram-negative and Gram-positive bacteria, including multi-resistant strains, with an optimal concentration between 1 and 10 µM.
Conclusions
Our findings demonstrated that multidomain antimicrobial proteins forming nanoclusters can be efficiently produced in recombinant bacteria, being a novel and valuable strategy to create a versatile, highly stable and easily editable multidomain constructs with a broad-spectrum antimicrobial activity in both soluble and nanostructured format.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
63 - Agriculture and related sciences and techniques
Pages
7
Publisher
BMC
Is part of
Microbial Cell Factories
Citation
Roca-Pinilla, Ramon, Adrià López-Cano, Cristina Saubi, Elena Garcia-Fruitós, and Anna Arís. 2020. "A New Generation Of Recombinant Polypeptides Combines Multiple Protein Domains For Effective Antimicrobial Activity". Microbial Cell Factories 19 (1). doi:10.1186/s12934-020-01380-7.
Program
Producció de Remugants
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2829]
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by/4.0/