Results 61 to 70 of about 3,049,090 (315)

Dna Supercoiling and Bacterial Gene Expression [PDF]

Science Progress, 2006
DNA in bacterial cells is maintained in a negatively supercoiled state. This contributes to the organization of the bacterial nucleoid and also influences the global gene expression pattern in the cell through modulatory effects on transcription.
openaire   +2 more sources

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Clerocidin selectively modifies the gyrase-DNA gate to induce irreversible and reversible DNA damage [PDF]

, 2008
Clerocidin (CL), a microbial diterpenoid, reacts with DNA via its epoxide group and stimulates DNA cleavage by type II DNA topoisomerases. The molecular basis of CL action is poorly understood.
Fisher, LM, Dias, M, PAN X. S, Pan, XS, Palumbo, M, DIAS M, FISHER L. M., PALUMBO, MANLIO   +7 more
core   +1 more source

Resiquimod induces a mixed Th1 and Th2 response via STAT1 and STAT3 signalling in chickens

Biochemistry and Biophysics Reports
Resiquimod (R-848), a synthetic TLR7 agonist, modulates immune responses, primarily inducing Th1-biased immunity in mammals. In contrast, our previous studies revealed that R-848 stimulates both Th1 and Th2 responses in chickens.
Deepthi Kappala, Saravanan Ramakrishnan, Patel Nikunjkumar Prakashbhai, Abinaya Kaliappan, Prasad Thomas, Jörg Linde, Mithilesh Singh, Sohini Dey, Madhan Mohan Chellappa   +8 more
doaj   +1 more source

Effects of preservation method on canine (Canis lupus familiaris) fecal microbiota [PDF]

PeerJ, 2018
Studies involving gut microbiome analysis play an increasing role in the evaluation of health and disease in humans and animals alike. Fecal sampling methods for DNA preservation in laboratory, clinical, and field settings can greatly influence ...
Katti R. Horng, Holly H. Ganz, Jonathan A. Eisen, Stanley L. Marks   +3 more
doaj   +2 more sources

Investigating transcription factor dynamics in health and disease using FRAP

FEBS Letters, EarlyView.
FRAP analysis of GFP‐tagged transcription factors reveals how molecular mobility and target engagement change in response to drug treatment. By combining live‐cell imaging, quantitative model fitting, and statistical analysis, this approach uncovers transcription factor dynamics linked to disease mechanisms, providing a powerful framework for ...
Kannan Govindaraj, Carolina Vazquez Garzon, Jose Joaquin Velasco, Janine N. Post   +3 more
wiley   +1 more source

PCR biases distort bacterial and archaeal community structure in pyrosequencing datasets [PDF]

, 2012
As 16S rRNA gene targeted massively parallel sequencing has become a common tool for microbial diversity investigations, numerous advances have been made to minimize the influence of sequencing and chimeric PCR artifacts through rigorous quality control ...
Lutgarde Raskin (143205), Ameet J. Pinto (143202), Lutgarde Raskin, Pinto Ameet J., Raskin, L., Ameet J Pinto, Raskin Lutgarde, Pinto, A.   +7 more
core   +2 more sources

The bacterial capsule is a gatekeeper for mobile DNA

PLOS Biology, 2021
The horizontal transfer of mobile DNA is one of the signature moves of bacterial evolution, but the specific rules that govern this transfer remain elusive. In this PLOS Biology issue, Haudiquet and colleagues revealed that the interactions between mobile genetic elements and the bacterial capsule shape the horizontal flow of DNA in an important ...
Alfonso Santos-López, Jerónimo Rodríguez-Beltrán, Álvaro San Millán   +2 more
openaire   +5 more sources

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

FEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang, Hyo Been Jin, Chang Min Kim, So Yeon Lee, Hyun Ho Park   +4 more
wiley   +1 more source

The minor groove-binding agent ELB-21 forms multiple interstrand and intrastrand covalent cross-links with duplex DNA and displays potent bactericidal activity against methicillin-resistant Staphylococcus aureus [PDF]

, 2011
Objectives The antistaphylococcal pyrrolobenzodiazepine dimer ELB-21 forms multiple adducts with duplex DNA through covalent interactions with appropriately spaced guanine residues; it is now known to form interstrand and intrastrand adducts with ...
Rahman, Khondaker; id_orcid, Thurston, DE, Taylor, PW, Feuerbaum, EA, Helena Rosado, David E. Thurston, Rahman, KM, Peter W. Taylor, Rosado, H, Hinds, J, Khondaker M. Rahman, Jason Hinds, Eva-Anne Feuerbaum   +12 more
core   +1 more source