Antimicrobial peptides are a class of small, usually positively charged amphiphilic peptides that are used by the innate immune system to combat bacterial infection in multicellular eukaryotes. Antimicrobial peptides are known for their broad-spectrum antimicrobial activity and thus can be used as a basis for a development of new antibiotics against multidrug-resistant bacteria. The most challe...

b ackground: brevinin-2r, as 25 amino acids peptide of the skin of r ana ridibunda frog, possesses potent antimicrobial and low hemolytic activity. it has an n-terminal hydrophilic region and a c-terminal loop that is delineated by an intra-disulfide bridge. in our study, brevinin-2r and its diastereomer as well  as its  cyclic  analogue  were  synthesized  and  characterized  in  order  to inv...

Antimicrobial peptides have been widely identified from amphibian skins except salamanders. A novel antimicrobial peptide (CFBD) was isolated and characterized from skin secretions of the salamander, Cynops fudingensis. The cDNA encoding CFBD precursor was cloned from the skin cDNA library of C. fudingensis. The precursor was composed of three domains: signal peptide of 17 residues, mature pept...

This article highlights new members, novel mechanisms of action, new functions, and interesting applications of antimicrobial peptides reported in 2014. As of December 2014, over 100 new peptides were registered into the Antimicrobial Peptide Database, increasing the total number of entries to 2493. Unique antimicrobial peptides have been identified from marine bacteria, fungi, and plants. Envi...

The most prominent problem in the current citrus industry worldwide is epidemic of Huanglongbing (HLB), also known as greening disease. Huang et al. identified a stable peptide, which has antimicrobial activities and induces systemic immune response against HLB, from Australian finger lime. This peptide effectively suppresses disease symptoms protects healthy trees this

Electrostatic nanomicelles remain stable and biocompatible under physiological conditions, but readily burst spill out cationic antimicrobial peptide to kill bacteria at infection sites.

A previously unknown pH-effect on the antimicrobial activity of peptide dendrimers and polymyxin B against Klebsiella pneumoniae MRSA is reported.

Peptides of the C-terminal region of human thrombin are released upon proteolysis and identified in human wounds. In this study, we wanted to investigate minimal determinants, as well as structural features, governing the antimicrobial and immunomodulating activity of this peptide region. Sequential amino acid deletions of the peptide GKYGFYTHVFRLKKWIQKVIDQFGE (GKY25), as well as substitutions ...

It is well known that cationic antimicrobial peptides (cAMPs) are potential microbicidal agents for the increasing problem of antimicrobial resistance. However, the physicochemical properties of each peptide need to be optimized for clinical use. To evaluate the effects of dimerization on the structure and biological activity of the antimicrobial peptide Ctx-Ha, we have synthesized the monomeri...

Many antimicrobial peptides (AMPs) function by forming various oligomeric structures and/or pores upon binding to bacterial membranes. Because such peptide aggregates are capable of inducing membrane thinning and membrane permeabilization, we expected that AMP binding would also affect the diffusivity or mobility of the lipid molecules in the membrane. Herein, we show that measurements of the d...