Identification and characterization of a bioactive lantibiotic produced by Staphylococcus warneri.
Lantibiotics are a group of potent antibacterial agents that contain unusual amino acids, such as the thioether amino acids lanthionine and methyllanthionine, and the didehydroamino acids didehydroalanine and didehydro-aminobutyric acid. Here, we report on an antibacterial lantibiotic peptide named SWLP1 (Staphylococcus warneri lantibiotic peptide 1), which is secreted from Staphylococcus warneri (deposited with DSMZ, accession number DSM 16081). SWLP1 was purified from growth media. The purified peptide displays antibacterial activity against several species, including Staphylococcus epidermidis. The molecular mass of SWLP1 is 2998.9 Da as determined by matrix-assisted laser desorption ionization time-of-flight mass spectrometry. The sequence and possible structure was elucidated by combining electrospray ionization mass spectrometry/mass spectrometry data of ethanethiol-treated and non-ethanethiol-treated tryptic fragments of the SWLP1. SWLP1 contains three thioether bridges, one didehydroalanine, and three didehydroaminobutyric acids. This peptide has the potential to be used in treatment of several Gram-positive bacterial infections.
ACE BioSciences A/S, Unsbjergvej 2a, DK-5220 Odense, Denmark.
Jørgen
J
Petersen
Anders
A
Boysen
Lotte
L
Fogh
Kathrine
K
Tabermann
Thomas
T
Kofoed
Angus
A
King
Petra
P
Schrotz-King
Martin Christian
MC
Hansen
D000595:Amino Acid Sequence; D000900:Anti-Bacterial Agents / Q000032:analysis* / Q000302:isolation & purification / Q000494:pharmacology*; D001430:Bacteriocins / Q000032:analysis* / Q000302:isolation & purification / Q000494:pharmacology*; D016984:Enterococcus faecium / Q000187:drug effects / Q000254:growth & development; D007711:Klebsiella pneumoniae / Q000187:drug effects / Q000254:growth & development; D008969:Molecular Sequence Data; D021241:Spectrometry, Mass, Electrospray Ionization; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D013210:Staphylococcus / Q000378:metabolism*; D013212:Staphylococcus epidermidis / Q000187:drug effects / Q000254:growth & development
D000900:Anti-Bacterial Agents; D001430:Bacteriocins