Results 121 to 130 of about 11,677 (208)

Entrainment of the circadian clock in humans: mechanism and implications for sleep disorders. [PDF]

open access: yes, 2007
Humans exhibit behaviour and physiology controlled by a circadian clock. The circadian period is genetically determined and administered by a series of interlocked autoregulatory feedback loops largely in the suprachiasmatic nuclei of the hypothalamus ...
David Metcalfe
core  

Sulphur(lone pair)…π interactions with FAD in flavoenzymes [PDF]

open access: yes, 2018
The interactions of π-systems with lone-pairs of electrons are known and have been described in biological systems, involving lone-pairs derived from metals, metalloids, sulphur, oxygen and nitrogen.
Caracelli, Ignez   +4 more
core  

CARS and SHG microscopy to follow the collagen production in living human corneal fibroblasts and mesenchymal stem cells in fibrin gel 3D cultures

open access: yes, 2011
Coherent anti-Stokes Raman scattering (CARS) microscopy is combined with second harmonic generation (SHG) technique in order to follow the early stage of stem cell differentiation within a 3D scaffold.
Brackmann   +45 more
core   +1 more source

Responses of Phycomyces indicating optical excitation of the lowest triplet state of riboflavin [PDF]

open access: yes, 1976
Phototropic and light growth responses of the sporangiophore of Phycomyces have been elicited using tunable laser stimulation from 575 to 630 nm. The growth response shows additional components of the action spectrum with a sharp peak at 595 nm, a sharp ...
Delbrück, Max   +2 more
core  

Flavoproteins in Directed Evolution

open access: yes, 2010
In der vorliegenden Arbeit wurden zwei Enzyme, eine Enoatreduktase (YqjM) und eine Monooxigenase (\(P450_{BM3}\)), mittels "Gerichteter Evolution" auf die Akzeptanz neuer Substrate angepasst. Mittel iterativem CASTing (combinatorial active site saturation test) konnten in beiden Fällen hoch regio- und stereoselektive Mutanten erhalten werden ...
openaire   +2 more sources

DIHYDROTHIOCTYL DEHYDROGENASE—A FLAVOPROTEIN [PDF]

open access: yesProceedings of the National Academy of Sciences, 1959
R L, Searls, D R, Sanadi
openaire   +2 more sources

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