Search results for "peptyd"
showing 7 items of 7 documents
Regulation of physiological differentiation in Nonomuraea sp. ATCC 39727
2014
The Actinomycete Nonomuraea produces the glycopeptide A40926, precursor of dalbavancin, a novel lipoglycopeptide homologous to vancomycin that could be used against emerging resistant Gram-positive bacteria. The A40926 biosynthetic gene cluster (dbv), which consists of 37 genes, encodes two regulators, Dbv3 (LuxR-like) and Dbv4 (StrR-like), as well as the response regulator (Dbv6) and the sensor-kinase (Dbv22) of a putative two-component system. Previous work demonstrated a positive role of Dbv4 in antibiotic production by activating the transcription of 13 dbv genes; up to now no role was assigned to Dbv3, Dbv6 and Dbv22. In addition, an IclR-like protein is thought to be involved in dbv4 …
Ihibitory katepsyny C
2011
Aminopeptydaza leucynowa
2011
N-metylowane peptydy jako nadzieja medycyny
2012
Extraction of peptides from body fluids using supported liquid membranes
2008
Sample pre-treatment is a very important step in many analytical procedures, especially when the analyte is presented in low concentration in complex sample matrices. In this paper, potential using of the supported liquid membrane (SLM) technique as a sample preparation step in order to isolate, pre-concentrate and separate small peptides and phosphono dipeptides from aqueous solutions and body fluids is discussed. An influence of various parameters including carrier type, donor and acceptor phase compositions, presence of salts and proteins in analysed samples on extraction efficiency and selectivity is presented. Additionally, comparison of SLM extraction efficiency from aqueous samples a…
Chromatograficzny i elektroforetyczny rozdział diastereometrycznych peptydów
1974
Poszukiwano układów rozwijających i roztworów buforowych dla chromatograficznego i elektroforetycznego rozdziału na diastereomery trój- i dwupeptydów.