A specific protein (MW 18,000) was found using chloramphenicol (CP) base-affinity chromatography of periplasmic-space proteins obtained from an impermeability-type CP-resistant Pseudomonas aeruginosa harboring plasmid kR102. Membrane reconstitution experiments using a liposome system appeared to indicate that the permeability of CP was inhibited by the specific protein.
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Dig Dis Sci
January 2025
Ningxia Medical University, Xing Qing Block, Shengli Street No.1160, Yin Chuan City, 750004, Ningxia Province, People's Republic of China.
Background: Colon adenocarcinoma (COAD) is a leading cause of cancer-related mortality worldwide. Transient receptor potential vanilloid 4 (TRPV4), a calcium-permeable non-selective cation channel, has been implicated in various cancers, including COAD. This study investigates the role of TRPV4 in colon adenocarcinoma and elucidates its potential mechanism via the ferroptosis pathway.
View Article and Find Full Text PDFBiomol NMR Assign
January 2025
Department of Molecular Biology and Biophysics, University of Connecticut Health Center, Farmington, CT, 06030, USA.
The nutrient germinant receptors (GRs) in spores of Bacillus species consist of a cluster of three proteins- designated A, B, and C subunits- that play a critical role in initiating the germination of dormant spores in response to specific nutrient molecules. The Bacillus cereus GerI GR is essential for inosine-induced germination; however, the roles of the individual subunits and the mechanism by which germinant binding activates GR function remain unclear. In this study, we report the backbone chemical shift assignments of the N-terminal domain (NTD) of the A subunit of GerI (GerIA).
View Article and Find Full Text PDFJ Gastrointest Cancer
January 2025
Colorectal Research Center, Imam Khomeini Hospital complex, Tehran University of Medical Sciences, Keshavarz Blvd, Tehran, Iran.
Purpose: Carcinoembryonic antigen (CEA) is an important prognostic factor for rectal cancer. This study aims to introduce a novel cutoff point for CEA within the normal range to improve prognosis prediction and enhance patient stratification in rectal cancer patients.
Methods: A total of 316 patients with stages I to III rectal cancer who underwent surgical tumor resection were enrolled.
J Mammary Gland Biol Neoplasia
January 2025
Department of Histology and Embryology, Faculty of Medicine, Masaryk University, Brno, Czech Republic.
Fluorescent biosensors offer a powerful tool for tracking and quantifying protein activity in living systems with high temporospatial resolution. However, the expression of genetically encoded fluorescent proteins can interfere with endogenous signaling pathways, potentially leading to developmental and physiological abnormalities. The EKAREV-NLS mouse model, which carries a FRET-based biosensor for monitoring extracellular signal-regulated kinase (ERK) activity, has been widely utilized both in vivo and in vitro across various cell types and organs.
View Article and Find Full Text PDFMikrochim Acta
January 2025
College of Geography and Environmental Sciences, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua, 321004, China.
Myoglobin (Mb), an important cardiac marker, plays a crucial role in diagnosing, monitoring, and evaluating the condition of patients with cardiovascular diseases. Here, we propose a label-free photoelectrochemical (PEC) sensor for the detection of Mb through target regulated the photoactivity of AgS/FeOOH heterojunction. The AgS/FeOOH nanospindles were synthesized and served as a sensing platform for the fabrication of bio-recognized process for Mb.
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