Results 41 to 50 of about 3,660 (160)

Growth-Phase-Specific Modulation of Cell Morphology and Gene Expression by an Archaeal Histone Protein

open access: yesmBio, 2015
In all three domains of life, organisms use nonspecific DNA-binding proteins to compact and organize the genome as well as to regulate transcription on a global scale.
Keely A. Dulmage   +2 more
doaj   +1 more source

Expression of microbial rhodopsins in Escherichia coli and their extraction and purification using styrene-maleic acid copolymers

open access: yesSTAR Protocols, 2022
Summary: Microbial rhodopsins are photoreceptive membrane proteins showing various light-dependent biological activities. Styrene-maleic acid (SMA) copolymers spontaneously form nanoscale lipid particles containing membrane proteins and associated lipids
Keiichi Kojima, Yuki Sudo
doaj   +1 more source

MpcT is the transducer for membrane potential changes in Halobacterium salinarum [PDF]

open access: yesMolecular Microbiology, 2005
Summary In Halobacterium salinarum mutants containing either of the light‐driven ion pumps bacteriorhodopsin (H + ) or halorhodopsin (Cl – ) as their only retinal protein, a decrease of ...
Koch, M., Oesterhelt, D.
openaire   +3 more sources

Complex Effects of Cytochrome P450 Monooxygenase on Purple Membrane and Bacterioruberin Production in an Extremely Halophilic Archaeon: Genetic, Phenotypic, and Transcriptomic Analyses

open access: yesFrontiers in Microbiology, 2018
Halophilic archaea are known to produce a diverse array of pigments for phototrophy and photoprotection. The aim of this paper was to determine the role of a Halobacterium gene encoding the predicted cytochrome P450 monooxygenase (CYP174A1) in pigment ...
Walter J. Müller   +4 more
doaj   +1 more source

A distinct gene expression mechanism for d‐amino acid utilization in hyperthermophilic archaeon Pyrococcus horikoshii

open access: yesThe FEBS Journal, EarlyView.
The genes PH0137, PH0138, and PH0140 form a cluster in the genome of Pyrococcus horikoshii. The PH0140 gene encodes a transcription factor identified as a d‐amino acid‐responsive regulatory protein (DARP). In feast mode, l‐Ile‐bound DARP binds to the promoter and represses transcription of PH0137 and PH0138. In famine mode, DARP binds to d‐allo‐Ile and
Ryushi Kawakami   +6 more
wiley   +1 more source

Recent Advances in the Study of Gas Vesicle Proteins and Application of Gas Vesicles in Biomedical Research

open access: yesLife, 2022
The formation of gas vesicles has been investigated in bacteria and haloarchaea for more than 50 years. These air-filled nanostructures allow cells to stay at a certain height optimal for growth in their watery environment. Several gvp genes are involved
Felicitas Pfeifer
doaj   +1 more source

Es werde Licht! Licht als Antrieb und Regulator in synthetischen Zellen

open access: yesAngewandte Chemie, Volume 138, Issue 24, 8 June 2026.
Zellen sind Systeme außerhalb des Gleichgewichts, die ihre Eigenschaften in Raum und Zeit regulieren. In biomimetischen synthetischen Zellen bietet Licht eine einzigartige Möglichkeit, Vorgänge räumlich und zeitlich anzutreiben und zu kontrollieren.
Matthew E. Allen   +5 more
wiley   +1 more source

Let There be Light! Light as an Engine and Regulator in Synthetic Cells

open access: yesAngewandte Chemie International Edition, Volume 65, Issue 24, 8 June 2026.
Cells are out‐of‐equilibrium systems that regulate their spatiotemporal features. In biomimetic synthetic cells, light offers a unique way for energizing and regulating events in space and time. This review explores the implementation of light‐responsive tools in synthetic cells to replicate biological functions and enable new bioinspired behaviors ...
Matthew E. Allen   +5 more
wiley   +1 more source

Identification of Archaea species from hot spring water in Hammam AL-Allel at Mosul Governorate

open access: yesمجلة مركز بحوث التقنيات الاحيائية, 2014
Isolate, Identify of some species belonging to Archaea from water of hot and sulphid springs in Hammam Al-Allel City/ Nenavah Governorate. Seventy five samples were collected from hot springs during 2012. The Archaea species were isolated using ordinary
Mohammed A . AL-Qatan   +2 more
doaj   +1 more source

Bioanalytical TERS and Advanced Data Processing Methods

open access: yesJournal of Raman Spectroscopy, Volume 57, Issue 6, Page 977-994, June 2026.
Tip‐enhanced Raman spectroscopy delivers label‐free, subnanometer vibrational imaging of biological systems. Recent advances in instrumentation, data analysis, and ambient/liquid operation enable surface‐selective mapping of molecular heterogeneity in proteins, nucleic acids, membranes, and viruses, positioning TERS as a powerful platform for nanoscale
Sarika Joshi   +6 more
wiley   +1 more source

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