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Targeted Killing of Staphylococcus aureus Using Specific Peptides Displayed on Yeast Vacuoles.

Staphylococcus aureus is a common pathogen that causes health care-related and community-associated infections. In this study, we provide a … am-negative and Gram-positive bacteria such as Salmonella sp., Shigella spp., Escherichia coli, and Corynebacterium glutamicum. In addition, yeast vacuoles were used as a drug carrier by encapsulating daptomycin, a lipopeptide antibiotic used to treat Gram-positive bacterial infections. The expression of specific peptides at the encapsulated vacuole membrane created an effi …

Single and double overexpression of C(4)-cycle genes had differential effects on the pattern of endogenous enzymes, attenuation of photorespiration and on contents of UV protectants in transgenic potato and tobacco plants.

To improve the efficiency of CO(2) fixation in C(3) photosynthesis, C(4)-cycle genes were overexpressed in potato and tobacco plants either individually or in combination. Overexpression of the phosphoenolpyruvate carboxylase (PEPC) gene (ppc) from Corynebacterium glutamicum (cppc) or from potato (stppc, deprived of the phosphorylation site) in potato resulted in a 3-6-fold induction of endogenous cytosolic NADP malic enzyme (ME) and an increase in the activities of NAD-ME (3-fold), NADP isocitrate dehydrogenase (ICDH), pyruvate kinase (PK), NADP glycerate-3-P dehydrogenase (NADP-GAPDH), and P…

Effect of reversible reactions on isotope label redistribution--analysis of the pentose phosphate pathway.

The pentose phosphate pathway plays several key roles in metabolism including supply of biosynthetic carbon skeletons and reducing power. Pr … ivities of metabolite carbon atoms taken from rat epididymal adipose tissue, goosefish islet cells, Corynebacterium glutamicum, and Escherichia coli supplied with either [2-14C]glucose or [1-13C]glucose demonstrate how reversibility is present in the pentose phosphate pathway and the extents of reversibility can be estimated from labeled carbon data sets.

Unraveling the link between insulin resistance and Non-alcoholic fatty liver disease (or metabolic dysfunction-associated steatotic liver disease): A Narrative Review.

BACKGROUND: Asymmetric aldol-type C-C bond formation with ketones used as electrophilic receptor remains a challenging reaction for aldolase … mploying a one-pot, two-stage reaction process. Moreover, we constructed two artificial pathways in Corynebacterium glutamicum to obtain this product in vivo starting from glucose or glycerol. Fermentation with glycerol as feedstock produced 6.4 g/L dendroketose with a yield of 0.45 mol/mol glycerol, representing 90% of the maximum theoretical value. Additionally, the dendr …

Characterization of the Streptomyces coelicolor Glycoproteome Reveals Glycoproteins Important for Cell Wall Biogenesis.

The physiological role of protein O-glycosylation in prokaryotes is poorly understood due to our limited knowledge of the extent of their glycoproteomes. In Actinobacteria, defects in protein O-mannosyl transferase (Pmt)-mediated protein O-glycosylation have been shown to significantly retard growth (Mycobacterium tuberculosis and Corynebacterium glutamicum) or result in increased sensitivities to cell wall-targeting antibiotics (Streptomyces coelicolor), suggesting that protein O-glycosylation has an important role in cell physiology. Only a single glycoprotein (SCO4142, or PstS) has been ide…

Application of leucine dehydrogenase Bcd from Bacillus subtilis for l-valine synthesis in Escherichia coli under microaerobic conditions.

Microaerobic cultivation conditions have been shown experimentally and theoretically to improve the performance of a number of bioproduction … problems. Increased l-valine synthesis under oxygen deprivation conditions was previously shown in Corynebacterium glutamicum (Hasegawa et al., 2012). In this study, we have proposed the use of NADH-dependent leucine dehydrogenase (LeuDH; EC 1.4.1.9) Bcd from B. subtilis instead of the native NADPH-dependent pathway including aminotransferase encoded by ilvE to improve l-v …

Mycothiol biosynthesis is essential for ethionamide susceptibility in Mycobacterium tuberculosis.

Spontaneous mutants of Mycobacterium tuberculosis that were resistant to the anti-tuberculosis drugs ethionamide and isoniazid were isolated and found to map to mshA, a gene encoding the first enzyme involved in the biosynthesis of mycothiol, a major low-molecular-weight thiol in M. tuberculosis. Seven independent missense or frameshift mutations within mshA were identified and characterized. Precise null deletion mutations of the mshA gene were generated by specialized transduction in three different strains of M. tuberculosis. The mshA deletion mutants were defective in mycothiol biosynthesi

RNAi-Based Therapeutics and Novel RNA Bioengineering Technologies.

RNA interference (RNAi) provides researchers with a versatile means to modulate target gene expression. The major forms of RNAi molecules, genome-derived microRNAs (miRNAs) and exogenous small interfering RNAs (siRNAs), converge into RNA-induced silencing complexes to achieve posttranscriptional gene regulation. RNAi has proven to be an adaptable and powerful therapeutic strategy where advancements in chemistry and pharmaceutics continue to bring RNAi-based drugs into the clinic. With four siRNA medications already approved by the US Food and Drug Administration (FDA), several RNAi-based thera

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… Two forms of direct expression make use of two bacterial strains, Rhodovulum sulfidophilum and an RNase III–deficient Corynebacterium glutamicum . The marine phototropic bacterium R. sulfidophilum has the capability to efflux oligonucleotides such as RNA but not RNases. … Direct Expression In vivo RNA production by direct expression was initiated by the identification of two bacterial strains, Rhodovulum sulfidophilum and an RNase III–deficient Corynebacterium glutamicum ( Pereira et al., 2017 ; Hashiro et al., 2019b ) ( Fig. 3 ). …

Новые знания о генетической основе и транскриптомном освещении вирулентности в вариантах Pseudomonas shiringae pv. actinidiae.

Псевдомонас сирингаэ pv. actindiae (Psa) является причинным агентом киви бактериального канцера, но факторы, влияющие на его патогенность в природных условиях, остаются малоизученными. В этом исследовании мы изолировали two Пса, штаммы G126 и G282, из зараженных киви садов в китайской провинции Гуйчжоу. Оба изолируют, отнесенные к категории Psa-biovar 3, были подтверждены через Psa3-specific и филогеномический анализ. Анализы патогенности на киви-фруктовых листьях и ветках «Хонгян» показали значительное сокращение числа некротических пятен и уменьшение размеров повреждений при инфекции G282 по

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… Small mobilizable multi-purpose cloning vectors derived from the Escherichia coli plasmids pK18 and pK19: selection of defined deletions in the chromosome of Corynebacterium glutamicum . Gene. 1994;145(1):69–73. doi: 10.1016/0378-1119(94)90324-7 [30] Gallelli A, Talocci S, Pilotti M, et al. …

Микроаэробный маленький белок от теплового шока способствует ризобию лимуминозараму/Писуму симбиозу и взаимодействует с широким диапазоном бактерироидных белков.

Во время создания симбиоза с бобовыми растениями ризобия подвергается воздействию враждебной физической и химической микроокружающей среды, к которой требуется адаптация. Протеины реакции на стресс, включая небольшие белки от теплового удара (SHSP), ранее, как было установлено, дифференцировались в бактерироидах, индуцируемых ризобием лимуминозарум бv. viciae UPM791 в различных хост-узлах. В ходе этой работы мы провели функциональный анализ зависящих от принимающей стороны SHSP RLV_1399. Рlv_1399- Исключенный штамм мутантов был нарушен в симбиотических свойствах гороха, но не чечевиц. Выражени

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… Small mobilizable multi-purpose cloning vectors derived from the Escherichia coli plasmids pK18 and pK19: selection of defined deletions in the chromosome of Corynebacterium glutamicum. Gene 145:69–73. doi: 10.1016/0378-1119(94)90324-7 51. …

Crosstalk of thioredoxin system and programmed cell death: from pathophysiology to novel therapy.

The thioredoxin (Trx) system, an integral component of cellular redox regulation, preserves protein dithiol-disulfide equilibrium through its conserved Cys-Gly-Pro-Cys active site and is involved in key cellular functions, including cell proliferation, apoptosis, and signal transduction. In cancer biology, the thioredoxin system plays dual roles: overexpression can suppress oxidative stress and promote tumor growth, whereas dysfunction can trigger programmed cell death (PCD). However, a critical area for future research is to delineate how Trx modulates the intricate networks of PCD, and to id

Processes and therapeutic perspectives of acylation modifications of lysine and cysteine in tumors.

Acylation modification plays a crucial role in tumor progression through altering protein homeostasis and localization. However, a comprehensive summary of these processes is lacking. Protein acylation modifications are comprehensively summarized and categorized based on the amino acids that are modified. This review focuses on modifications of the lysine (acetylation, succinylation, crotonylation, malonylation, and glutarylation) and cysteine (myristoylation and palmitoylation) groups. The key enzymes involved in the occurrence and erasure of different modifications, as well as their effects

Nucleotide Metabolism in Health and Disease.

Nucleotide metabolism is a fundamental biochemical process, providing the building blocks for DNA and RNA synthesis while driving critical cellular functions like energy transfer, signal transduction, and coenzyme synthesis. The precise regulation of nucleotide de novo synthesis, salvage, and degradation pathways is imperative for maintaining genomic stability and tissue homeostasis. Aberrations in these networks are increasingly recognized as primary drivers in various pathologies; notably, cancer cells exploit metabolic-functional reprogramming to enable rapid proliferation and therapeutic r