نتایج جستجو برای: l proline
تعداد نتایج: 631454 فیلتر نتایج به سال:
The development of cell therapeutics from embryonic stem (ES) cells will require technologies that direct cell differentiation to specific somatic cell lineages in response to defined factors. The initial step in formation of the somatic lineages from ES cells, differentiation to an intermediate, pluripotent primitive ectoderm-like cell, can be achieved in vitro by formation of early primitive ...
Soluble and membrane associated proline dehydrogenase differ in catalytic properties. The soluble enzyme transfers electrons from L-proline to exogenous electron acceptors. It has a high Km for L-proline (105 mM) and is insensitive to the respiratory chain inhibitors 5-ethyl-5-isopentyl-barbituric acid and cyanide. The membrane-associated enzyme transfers electrons from L-proline to O2 via the ...
Taking inspiration from our recent work in which a new sensor for hydrogen peroxide was proposed, research group has now developed simple, fast, and inexpensive voltametric system determining proline concentration both standard solutions real samples (red white wines). This uses non-enzymatic based on working electrode of glassy carbon (GC) modified with layered double hydroxide (LDH) compound,...
We examined the role of pH gradient and membrane potential in dipeptide transport in purified intestinal and renal brush-border membrane vesicles which were predominantly oriented right-side out. With an intravesicular pH of 7.5, changes in extravesicular pH significantly affected the transport of glycyl-L-proline and L-carnosine, and optimal dipeptide transport occurred at an extravesicular pH...
Scutella separated from germinating grains of barley (Hordeum vulgare L. cv Himalaya) took up 1 millimolar l-[(14)C]proline at an initial rate of about 6.5 micromoles gram(-1) fresh weight hour(-1) (pH 5, 30 degrees C). The uptake had a pH optimum at 5. The bulk of the uptake (93%) was via carrier-mediated active transport. All of the 19 l-amino acids tested at 10 millimolar concentration inhib...
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