Search results for "lipid"
showing 9 items of 3879 documents
The closest relatives of icosahedral viruses of thermophilic bacteria are among viruses and plasmids of the halophilic archaea.
2009
We have sequenced the genome and identified the structural proteins and lipids of the novel membranecontaining, icosahedral virus P23-77 of Thermus thermophilus. P23-77 has an 17-kb circular double-stranded DNA genome, which was annotated to contain 37 putative genes. Virions were subjected to dissociation analysis, and five protein species were shown to associate with the internal viral membrane, while three were constituents of the protein capsid. Analysis of the bacteriophage genome revealed it to be evolutionarily related to another Thermus phage (IN93), archaeal Halobacterium plasmid (pHH205), a genetic element integrated into Haloarcula genome (designated here as IHP for integrated Ha…
Lipid Binding Controls Dimerization of the Coat Protein p24 Transmembrane Helix
2019
Abstract Coat protein (COP) I and COP II complexes are involved in the transport of proteins between the endoplasmic reticulum and the Golgi apparatus in eukaryotic cells. The formation of COP I/II complexes at membrane surfaces is an early step in vesicle formation and is mastered by p24, a type I transmembrane protein. Oligomerization of p24 monomers was suggested to be mediated and/or stabilized via interactions within the transmembrane domain, and the p24 transmembrane helix appears to selectively bind a single sphingomyelin C18:0 molecule. Furthermore, a potential cholesterol-binding sequence has also been predicted in the p24 transmembrane domain. Thus, sphingomyelin and/or cholestero…
Lipid-related thiamine deficiency cause mortality of river lampreys (Lampetra fluviatilis) during pre-spawning fasting
2023
Publisher Copyright: © 2023 The Authors River lampreys (Lampetra fluviatilis) were caught in the fall 2014 on entering the River Perhonjoki for spawning and kept at a hatchery until spawning in late spring 2015 to produce larvae for compensatory stockings. Since the lampreys died massively from early February onwards, they were investigated in March and May to clarify the cause of the deaths. The symptoms in lampreys resembled those of lipid-related thiamine (vitamin B1) deficiency of salmonines, called the M74 syndrome in the Baltic Sea area. Because the lipid content of lampreys was known to be high, thiamine concentrations were analyzed in the liver and ovulated unfertilized eggs, and th…
Mielipiteen vuorovaikutuksellinen rakentaminen syntyperäisen ja ei-syntyperäisen suomenpuhujan keskustelussa.
1998
"Ilman mielipiteitä muutoksia ei tapahdu!" : yleisö, esisopimukset ja retoriset keinot sukupuolineutraalia avioliittoa käsittelevissä mielipidekirjoi…
2012
Tutkimuksessa tarkastellaan sukupuolineutraalia avioliittoa käsitteleviä mielipidekirjoituksia. Tavoitteena on selvittää, miten kirjoittajat suhtautuvat sukupuolineutraaliin avioliittoon tutkimalla etenkin näissä kirjoituksissa käytettyä retoriikkaa, mutta myös niiden yleisösuhdetta ja esisopimuksia. Tutkimuskysymykseni ovat: Millaisia yleisöjä kirjoittajien teksteissä on? Millaisia esisopimuksia teksteissä on? Miten kirjoittajat pyrkivät vaikuttamaan lukijoihin? Millaisia retorisia keinoja he käyttävät? Millaisia arvoja ja asenteita teksteissä ilmenee / rakentuu? Aineistona on 38 sukupuolineutraaliin avioliittoon liittyvää mielipidekirjoitusta, jotka ilmestyivät vuoden 2010 Homoillan aikaa…
The effect of instructions on writing an argumentative text : a study on upper secondary school students' written performance in English
2014
Tietoyhteiskunnan kehitys heijastuu tulevina vuosina myös ylioppilastutkintoihin, sillä vuodesta 2016 alkaen ensimmäiset ylioppilaskirjoitukset suoritetaan sähköisesti tietokoneita hyödyntäen. Myös englannin kielen opetukselle tekstinkäsittelyohjelmilla kirjoitettavat ylioppilasaineet asettavat haasteita ja mahdollisuuksia. Tässä tutkielmassa tarkasteltiin lukiolaisten englanninkielisen kantaa ottavan tekstin tuottamisen taitoja tekstinkäsittelyohjelmien asettamien mahdollisuuksien näkökulmasta. Tutkimuksen tavoitteena oli selvittää, miten lukiolaiset muokkaavat tekstinkäsittelyohjelmaa hyödyntäen kirjoittamansa mielipidekirjoituksen argumentaatiota saatuaan lisäohjeistusta. Tutkimus on ver…
An experimental model for mimicking biological systems: the Belousov-Zhabotinsky reaction in Lipid membranes
2006
Interplay between the Belousov-Zhabotinsky reaction-diffusion system and biomimetic matrices
2007
Abstract Interactions between reaction–diffusion systems and restricted host environments are a subject of widespread interest. In this work the behaviour of the Belousov–Zhabotinsky reaction was investigated in lamellar phases formed by phospholipid bilayers with relevance for biological systems. The influence of the reactive medium on the structure of the lipid matrix and, in turn, the influence of the matrix on the dynamical evolution of chemical patterns, were studied by small angle scattering.
Characterization and antimicrobial activity of the volatile components of the flowers of Magydaris tomentosa (Desf.) DC. collected in Sicily and Alge…
2014
The essential oils of the flowers of Magydaris tomentosa (Desf.) DC. (Apiaceae) collected in Sicily (MSi) and Algeria (MAl), respectively, were obtained by hydrodistillation, and their compositions were analysed. The analyses allowed the identification and quantification of 23 components in MSi and 60 compounds in MAl, respectively, showing a very different profile in the composition of the two populations. The main components of MSi were cembrene (28.2%), α-springene (17.5%) and β-springene (14.8%), also present in MAl but in lesser amount (0.4%, 1.8% and 0.9%, respectively), whereas the principal constituents of MAl were (E)-nerolidol (35.4%), α-costol (13.3%) and β-costol (6.8%). Both MS…