The tRNase domain of colicin D, which cleaves only tRNA(Arg)s at the 3' side of their anticodon loops, has been expressed in Escherichia coli with its inhibitor protein and purified to a form free from the inhibitor using a low-pH buffer. Crystals were obtained by the hanging-drop vapour-diffusion method at 278 K from a buffer containing 100 mM Tris-HCl pH 8.5, 22% PEG MME 2000 and 1 mM nickel(II) chloride. Diffraction data to 1.05 A resolution were collected at BL41XU, SPring-8. The crystals belong to space group P2(1)2(1)2(1), with unit-cell parameters a = 34.7, b = 65.5, c = 96.5 A.
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http://dx.doi.org/10.1107/S1744309105039679 | DOI Listing |
Nat Prod Res
January 2025
School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, P. R. China.
The extract of the stems of R. Br. yielded three new terpenes () including two diterpenes and one triterpene, named euryachins C-E, as well as three known diterpenes ().
View Article and Find Full Text PDFArch Microbiol
January 2025
SLIIT, Malabe, Sri Lanka.
The development of new medicines with unique methods of antimicrobial action is desperately needed due to the emerging multidrug-resistant bacteria, such as methicillin-resistant Staphylococcus aureus. Therefore, antimicrobial peptoids have emerged as potential new antimicrobials. Thirteen peptoid analogues have been designed and synthesized via solid phase synthesis.
View Article and Find Full Text PDFmBio
December 2024
Infection Program, Department of Microbiology, Monash University, Biomedicine Discovery Institute, Melbourne, Victoria, Australia.
is a Gram-negative opportunistic pathogen and is a common cause of nosocomial infections. The increasing development of antibiotic resistance in this organism is a global health concern. The clinical isolate AB307-0294 produces a type VI secretion system (T6SS) that delivers three antibacterial effector proteins that give this strain a competitive advantage against other bacteria in polymicrobial environments.
View Article and Find Full Text PDFAntimicrob Agents Chemother
December 2024
Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
The reliability of ceftriaxone for inferring susceptibility to higher-generation oral cephalosporins is unknown. Overall, ceftriaxone susceptibility predicted susceptibility to cefuroxime (89%), cefdinir (86%), cefpodoxime (90%), and cefixime (94%) based on disk diffusion results for 409 consecutive Enterobacterales bloodstream isolates from unique patients. Susceptibility percentages to the four oral cephalosporins ranged from 92% to 99% when limited to , isolates susceptible to ceftriaxone.
View Article and Find Full Text PDFmSphere
December 2024
Department of Bioengineering, University of California, San Diego, La Jolla, California, USA.
Unlabelled: Thousands of complete genome sequences for strains of a species that are now available enable the advancement of pangenome analytics to a new level of sophistication. We collected 2,377 publicly available complete genomes of for detailed pangenome analysis. The core genome and accessory genomes consisted of 2,398 and 5,182 genes, respectively.
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