Site-Directed Mutations in the Lanthipeptide Mutacin 1140
نویسندگان
چکیده
منابع مشابه
Mutacin 1140 Lantibiotic Variants Are Efficacious Against Clostridium difficile Infection
Lantibiotics offer an untapped pipeline for the development of novel antibiotics to treat serious Gram-positive (+) infections including Clostridium difficile. Mutacin 1140 (MU1140) is a lantibiotic produced by Streptococcus mutans and acts via a novel mechanism of action, which may limit the development of resistance. This study sought to identify a lead compound for the treatment of C. diffic...
متن کاملBiosynthesis and transport of the lantibiotic mutacin 1140 produced by Streptococcus mutans.
UNLABELLED Lantibiotics are ribosomally synthesized peptide antibiotics composed of an N-terminal leader peptide that is cleaved to yield the active antibacterial peptide. Significant advancements in molecular tools that promote the study of lantibiotic biosynthesis can be used in Streptococcus mutans. Herein, we further our understanding of leader peptide sequence and core peptide structural r...
متن کاملThe leader peptide of mutacin 1140 has distinct structural components compared to related class I lantibiotics
Lantibiotics are ribosomally synthesized peptide antibiotics composed of an N-terminal leader peptide that promotes the core peptide's interaction with the post translational modification (PTM) enzymes. Following PTMs, mutacin 1140 is transported out of the cell and the leader peptide is cleaved to yield the antibacterial peptide. Mutacin 1140 leader peptide is structurally unique compared to o...
متن کاملGenetic and biochemical analysis of mutacin 1140, a lantibiotic from Streptococcus mutans.
Streptococcus mutans JH1000 and its derivatives were previously shown (J. D. Hillman, K. P. Johnson, and B. I. Yaphe, Infect. Immun. 44:141-144, 1984) to produce a low-molecular-weight, broad-spectrum bacteriocin-like inhibitory substance (BLIS). The thermosensitive vector pTV1-OK harboring Tn917 was used to isolate a BLIS-deficient mutant, DM25, and the mutated gene was recovered by shotgun cl...
متن کاملSite-directed mutagenesis using PCR-mediated introduction of silent mutations.
The alteration of a specific sequence of DNA using site-directed mutagenesis (SDM) provides an effective tool to probe the structure and function of gene products. With the advent of polymerase chain reaction (PCR), several new techniques were developed that facilitate SDM. An oligonucleotide containing mismatches at the desired site of mutation is used to generate a population of mutant fragme...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 2013
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.00704-13