AI Article Synopsis
- Proteolytic digestion of nitrite reductase from Pseudomonas aeruginosa leads to the isolation of a d1 heme domain made up of two peptides that are noncovalently linked.
- This d1 domain can consume oxygen and binds carbon monoxide slightly better than the full dimeric form of the enzyme.
- However, it loses the ability to oxidize cytochrome c551, indicating that the two domains do not strongly interact and are merely parts of the same polypeptide.
Article Abstract
Proteolitic digestion of nitrite reductase from Pseudomonas aeruginosa allows to obtain and purify a domain containing only the d1 heme and constituted by two noncovalently bound peptides. This d1 domain catayzes oxygen consumption, and binds carbon monoxide with a kinetic constant slightly higher than the parental dimeric holoenzyme. The capacity to oxidize the physiological substrate, cytochrome c551, is lost, even when the proteolytic c heme domain is added to this reaction mixture. This finding suggests that the two domains do not have a significant affinity for each other, and are kept together only by being part of the same polypeptide.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/0162-0134(95)00090-9 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Examining the Biophysical Properties of the Inner Membrane of Gram-Negative ESKAPE Pathogens.
J Chem Inf Model
January 2025
Department of Biochemistry, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador A1C 5S7, Canada.
The World Health Organization has identified multidrug-resistant bacteria as a serious global health threat. Gram-negative bacteria are particularly prone to antibiotic resistance, and their high rate of antibiotic resistance has been suggested to be related to the complex structure of their cell membrane. The outer membrane of Gram-negative bacteria contains lipopolysaccharides that protect the bacteria against threats such as antibiotics, while the inner membrane houses 20-30% of the bacterial cellular proteins.
View Article and Find Full Text PDFChangeover method for biosafety cabinets using ozone gas.
PLoS One
January 2025
Center for Stem Cell and Regenerative Medicine, Institute of Science Tokyo, Bunkyo-ku, Tokyo, Japan.
This study evaluated the effectiveness of a biosafety cabinet equipped with an ozone generator, particularly during the transition periods between the production of cell products. As living cell products cannot undergo sterilization, maintaining an aseptic manufacturing environment is paramount. Raw materials, often derived from human tissues, are frequently contaminated with various resident bacteria, necessitating environmental resets after each process.
View Article and Find Full Text PDFPrevalence, aetiology and antimicrobial resistance profile of diabetic individuals suffering from community-acquired urinary tract infection.
J Med Microbiol
January 2025
Parul Institute of Applied Sciences, Faculty of Applied Sciences, Parul University, Vadodara, Gujarat 391760, India.
The rise in antimicrobial resistance poses a significant threat to global health, particularly among diabetic patients who are prone to urinary tract infections (UTIs). Pathogens that cause UTI among diabetic patients exhibit significant multidrug resistance (MDR) patterns, necessitating more precise empirical treatment strategies..
View Article and Find Full Text PDFNovel PiuC, PirA, and PiuA mutations leading to cefiderocol resistance progression in IMP-16- and KPC-2-producing from a leukemic patient.
Microbiol Spectr
January 2025
Servei de Microbiologia i Parasitologia-CDB, Hospital Clínic de Barcelona, Barcelona, Spain.
Unlabelled: is an opportunistic pathogen capable of causing severe infections in immunocompromised individuals, who often require prolonged antibiotic therapy. The emergence of carbapenemase-producing has further complicated the management of nosocomial infections, limiting therapeutic options. Cefiderocol has recently emerged as a promising antipseudomonal agent, using the bacterial iron transport system to gain entry into the cell; however, there have been reports of resistant to cefiderocol.
View Article and Find Full Text PDFc-di-GMP phosphodiesterase ProE interacts with quorum sensing protein PqsE to promote pyocyanin production in .
mSphere
January 2025
School of Medicine, Southern University of Science and Technology, Shenzhen, China.
The universal bacterial second messenger bis-(3'-5')-cyclic dimeric guanosine monophosphate (c-di-GMP) plays critical roles in regulating a variety of bacterial functions such as biofilm formation and virulence. The metabolism of c-di-GMP is inversely controlled by diguanylate cyclases (DGCs) and phosphodiesterases (PDEs). Recently, increasing studies suggested that the protein-protein interactions between DGCs/PDEs and their partners appear to be a common way to achieve specific regulation.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!