Identification, purification and characterization of laterosporulin, a novel bacteriocin produced by Brevibacillus sp. strain GI-9.

Background: Bacteriocins are antimicrobial peptides that are produced by bacteria as a defense mechanism in complex environments. Identification and characterization of novel bacteriocins in novel strains of bacteria is one of the important fields in bacteriology.

Methodology/findings: The strain GI-9 was identified as Brevibacillus sp.

Micrococcus lactis sp. nov., isolated from dairy industry waste.

A Gram-positive, yellow-pigmented, actinobacterial strain, DW152(T), was isolated from a dairy industry effluent treatment plant. 16S rRNA gene sequence analysis indicated that strain DW152(T) exhibited low similarity with many species with validly published names belonging to the genera Micrococcus and Arthrobacter. However, phenotypic properties including chemotaxonomic markers affiliated strain DW152(T) to the genus Micrococcus.