A gene coding for a class VII cytochrome P450 monooxygenase (CYP116B5) was identified from Acinetobacter radioresistens S13 growing on media with medium (C14, C16) and long (C24, C36) chain alkanes as the sole energy source. Phylogenetic analysis of its N- and C-terminal domains suggests an evolutionary model involving a plasmid-mediated horizontal gene transfer from the donor Rhodococcus jostii RHA1 to the receiving A. radioresistens S13. This event was followed by fusion and integration of the new gene in A. radioresistens chromosome. Heterologous expression of CYP116B5 in Escherichia coli BL21, together with the A. radioresistens Baeyer-Villiger monooxygenase, allowed the recombinant bacteria to grow on long- and medium-chain alkanes, showing that CYP116B5 is involved in the first step of terminal oxidation of medium-chain alkanes overlapping AlkB and in the first step of sub-terminal oxidation of long-chain alkanes. It was also demonstrated that CYP116B5 is a self-sufficient cytochrome P450 consisting of a heme domain (aa 1-392) involved in the oxidation step of n-alkanes degradation, and its reductase domain (aa 444-758) comprising the NADPH-, FMN- and [2Fe2S]-binding sites. To our knowledge, CYP116B5 is the first member of this class to have its natural substrate and function identified.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1111/mmi.12883 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Association between the aromatase () gene variant rs10046 and cardiovascular risk in postmenopausal women.
Arch Endocrinol Metab
January 2025
Unidade de Endocrinologia Ginecológica Hospital de Clínicas de Porto Alegre Divisão de Endocrinologia Porto AlegreRS Brasil Unidade de Endocrinologia Ginecológica, Divisão de Endocrinologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brasil.
Objective: To assess the genotypic and allelic distribution of the rs10046 polymorphism in the gene and evaluate whether this aromatase gene variant is associated with cardiovascular risk in postmenopausal women.
Materials And Methods: This cross-sectional study analyzed repository-stored samples from 370 postmenopausal women aged 44-72 years. Clinical, metabolic, and hormonal data were collected.
Pinocembrin alleviates renal ischemia-reperfusion injury/unilateral ureteral obstruction (UUO)-generated renal fibrosis by targeting the CYP1B1/ROS/MAPK axis.
FEBS J
January 2025
Department of Urology, Renmin Hospital of Wuhan University, China.
In our research, we constructed models of renal ischemia-reperfusion (I/R)-exposed acute kidney injury (AKI) and unilateral ureteral obstruction (UUO)-stimulated renal fibrosis (RF) in C57BL/6 mice and HK-2 cells. We firstly authenticated that oral pinocembrin (PIN) administration obviously mitigated tissue damage and renal dysfunction induced by I/R injury, and PIN attenuated UUO-caused RF, as confirmed by the reduced expression of fibrotic markers as well as hematoxylin-eosin (H&E), Sirius red, immunohistochemistry, and Masson staining. Meanwhile, the beneficial role of PIN was again demonstrated in HK-2 cells with hypoxia-reoxygenation (H/R) or transforming growth factor beta-1 (TGF-β1) treatment.
View Article and Find Full Text PDFIN SILICO AND IN VITRO ASSESSMENT OF ANTI-Leishmania infantum ACTIVITY OF A NOVEL CYCLOHEXYL-1,2,4-OXADIAZOLE DERIVATIVE.
Mol Biochem Parasitol
January 2025
Post-graduate Program in Pharmaceutical Sciences, Federal University of Ceará, Fortaleza - CE, Brazil; Fundação Oswaldo Cruz, Fiocruz, Fiocruz Ceará, Eusébio - CE, Brazil; Northeast Network of Biotechnology (RENORBIO), State University of Ceará (UECE), Fortaleza - CE, Brazil.
Globally, an estimated 1 billion people reside in endemic areas, and over 12 million individuals are infected with leishmaniasis. Despite its prevalence, leishmaniasis continues to be a neglected disease, mainly affecting underdeveloped countries. In Brazil, the available treatments are pentavalent antimonials and Amphotericin B, which are outdated, toxic, require prolonged parenteral administration and have limited efficacy.
View Article and Find Full Text PDFEvaluation of stabilizing additives to protect activities of cytochrome P450 enzymes for in vitro drug testing and pharmacogenetic studies: Focus on CYP2D6.
Biochim Biophys Acta Gen Subj
January 2025
Institute of Clinical Pharmacology, University Hospital of RWTH Aachen, Aachen, Germany.
In vitro and ex vivo studies on drug metabolism and stability are vital for drug development and pre-clinical safety assessment. Traditional in vitro models, such as liver enzyme (S9) fractions and microsomes, often fail to account for individual variability. Personalized models, including 3D cell models and organoids, offer promising alternatives but may not fully replicate physiological processes, especially for Cytochrome P450 (CYP) families involved in extrahepatic metabolism.
View Article and Find Full Text PDFNorharmane prevents muscle aging via activation of SKN-1/NRF2 stress response pathways.
Redox Biol
January 2025
Aging and Metabolism Research Group, Korea Food Research Institute, Wanju-gun, South Korea; Department of Food Biotechnology, Korea University of Science and Technology, Daejeon-si, South Korea. Electronic address:
Sarcopenia, the age-related decline in muscle mass and function, is a significant contributor to increased frailty and mortality in the elderly. Currently, no FDA-approved treatment exists for sarcopenia. Here, we identified norharmane (NR), a β-carboline alkaloid, as a potential therapeutic agent for mitigating muscle aging.
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!