Results 121 to 130 of about 128,722 (343)

Molecular basis of antibiotic sensing by the TetR family regulator CecR – a structural perspective

open access: yesThe FEBS Journal, EarlyView.
Escherichia coli CecR, a member of the TetR family regulators, senses selected antibiotics and activates the expression of a putative drug efflux pump. Although present in many pathogenic Enterobacteriales strains, CecR remains poorly characterized. We present the first CecR crystal structure, which reveals a unique tunnel‐like ligand‐binding cavity ...
Agnieszka J. Pietrzyk‐Brzezinska   +5 more
wiley   +1 more source

Fatal community-acquired Bacillus cereus pneumonia in an immunocompetent adult man: a case report

open access: yesBMC Infectious Diseases, 2019
Background Bacillus cereus is a gram-positive rod bacterium that is responsible for food poisoning. It is naturally widely distributed, and thus often contaminates cultures.
Ryosuke Ishida   +7 more
doaj   +1 more source

Diversity of culturable moderately halophilic and halotolerant bacteria in a marsh and two salterns a protected ecosystem of Lower Loukkos (Morocco) [PDF]

open access: yes, 2012
To study the biodiversity of halophilic bacteria in a protected wetland located in Loukkos (Northwest, Morocco), a total of 124 strains were recovered from sediment samples from a marsh and salterns.
Amar, Mohamed   +7 more
core   +1 more source

Porcine Gastric Mucin Triggers Toxin Production of Enteropathogenic Bacillus cereus [PDF]

open access: bronze, 2019
Nadja Jeßberger   +4 more
openalex   +1 more source

Bacterial porphyrins in healthy skin: Microbiota components impact melanogenesis and age‐related processes leading to Porphyr'ageing

open access: yesInternational Journal of Cosmetic Science, EarlyView.
Porphyrins, previously linked only to acne inflammation, are now implicated in skin ageing. Their presence correlates with increased melanin, inflammation, and oxidative stress, contributing to premature ageing signs. This study introduces the concept of “Porphyr'ageing,” highlighting the detrimental effects of bacterial metabolites on skin health and ...
Marie Meunier   +9 more
wiley   +1 more source

Spectral, crystallographic, theoretical and antibacterial studies of palladium(II)/platinum(II) complexes with unsymmetric diphosphine ylides [PDF]

open access: yes, 2019
The reaction of alpha-keto-stabilized diphosphine ylides [Ph2P(CH2)(n)PPh2C(H)C(O)C6H4-p-CN] (n = 1 (Y-1); n = 2 (Y-2)) with dibromo(1,5-cyclooctadiene) palladium(II)/platinum(II) complexes, [Pd/PtBr2(cod)], in equimolar ratio gave the new cyclometalated
Badpa, Khadijeh   +7 more
core   +1 more source

Exploring Persistent Apical Periodontitis in Humans: Integrative Genetic, Histological and Microbiological Perspectives for Translational Research

open access: yesInternational Endodontic Journal, EarlyView.
ABSTRACT Aim To evaluate the impact of polymorphisms in SOCS‐1, TNF‐α and RANKL on gene expression of RANK, RANKL, TNFRSF1, SOCS‐1, IL‐10, IL‐1β and TNF‐α, and to evaluate the histopathological, immunohistochemical and microbiological aspects of persistent apical periodontitis (PAP) after root canal treatment (RCT) in Brazilian individuals ...
Igor Bassi Ferreira Petean   +12 more
wiley   +1 more source

Engineering Dehydrated Amino Acid Residues in the Antimicrobial Peptide Nisin [PDF]

open access: yes, 1992
The small antimicrobial peptide nisin, produced by Lactococcus lactis, contains the uncommon amino acid residues dehydroalanine and dehydrobutyrine and five thio ether bridges.
Boot, Hein J.,   +5 more
core   +1 more source

Nocturnal Lepidopterans as Essential Pollinators of Aspidosperma pyrifolium (Apocynaceae), a Keystone Tree in the Caatinga Dry Forest

open access: yesJournal of Applied Entomology, EarlyView.
ABSTRACT Pollination is a key ecosystem service, yet most studies focus on diurnal interactions, often overlooking nocturnal pollinators such as hawkmoths and settling moths. In arid environments, nocturnal pollination plays a crucial role in maintaining native plant species of high biocultural value, as seen in the Caatinga dry forest.
Joel A. Queiroz   +3 more
wiley   +1 more source

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