3,4-Dimethylindole-2-carboxylate and 4-(1-hydroxyethyl)quinoline-2-carboxylate activating enzymes from the nosiheptide and thiostrepton producers, Streptomyces actuosus and Streptomyces laurentii

Author(s):  
Todd M. Smith ◽  
Nigel D. Priestley ◽  
Andrew R. Knaggs ◽  
Tom Nguyen ◽  
Heinz G. Floss
2014 ◽  
Vol 173 (6) ◽  
pp. 1553-1563 ◽  
Author(s):  
Qingling Wang ◽  
Dong Zhang ◽  
Yudong Li ◽  
Fuming Zhang ◽  
Cao Wang ◽  
...  

Gene ◽  
1990 ◽  
Vol 91 (1) ◽  
pp. 9-17 ◽  
Author(s):  
Yum Li ◽  
Donald C. Dosch ◽  
William R. Strohl ◽  
Heinz G. Floss

ChemistryOpen ◽  
2018 ◽  
Vol 7 (7) ◽  
pp. 558-561 ◽  
Author(s):  
Weiying Liu ◽  
Fengxian Sun ◽  
Yang Hu

1979 ◽  
Vol 62 (5) ◽  
pp. 976-981 ◽  
Author(s):  
Claude Pascal ◽  
Claude Gaillard ◽  
Marie-O Moreau

Abstract Nosiheptide is determined in fermentation broths of Streptomyces actuosus either by a microbiological method using Staphylococcus aureus or, more easily, by an automated colorimetric method. The results obtained with both methods correspond well for concentrations greater than 100 μg/mL with a standard deviation of 1-3%. For determination of nosiheptide as a feed additive, the microbiological assay is made more specific by pretreatment with petroleum ether and IN HCL Standard deviation is <4%, and the assay is sensitive to 1 ppm. Nosiheptide is identified in feed containing other frequently used antibiotics by thin layer chromatography with bioautography; sensitivity is 1 ppm. The absence of traces of nosiheptide in tissues of treated swine and broiler is confirmed by microbiological diffusion, sensitive to 0.025 ppm.


2003 ◽  
Vol 33 (7) ◽  
pp. 917-925 ◽  
Author(s):  
San-Lang Wang ◽  
Yue-Horng Yen ◽  
Ing-Lung Shih ◽  
Audrey Chingzu Chang ◽  
Wen-Teish Chang ◽  
...  

1988 ◽  
Vol 110 (17) ◽  
pp. 5800-5806 ◽  
Author(s):  
David R. Houck ◽  
Li Chun. Chen ◽  
Paul J. Keller ◽  
John M. Beale ◽  
Heinz G. Floss

2015 ◽  
Vol 71 (8) ◽  
pp. 1033-1037 ◽  
Author(s):  
Yanting Wang ◽  
Shanshan Liu ◽  
Pengfei Yao ◽  
Yi Yu ◽  
Yan Zhang ◽  
...  

Nosiheptide is a member of the thiopeptide family of antibiotics which demonstrates potent activities against various bacterial pathogens. The formation of its C-terminal amide is catalysed by NosA in an unusual strategy for maturating certain thiopeptides by processing precursor peptides featuring a serine extension. Here, a recombinant C-terminally truncated selenomethionine-derivatized NosA1–111variant fromStreptomyces actuosusconsisting of residues 1–111, named SeMet NosA1–111, was crystallized using the sitting-drop vapour-diffusion method. Diffraction data were collected to 2.40 Å resolution using synchrotron radiation. The crystals belonged to the primitive cubic space groupP4132, with unit-cell parametersa=b=c= 143.3 Å. Assuming the presence of three molecules in the asymmetric unit, the calculated Matthews coefficient was 3.94 Å3 Da−1and the corresponding solvent content was 40.3%.


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