The aims were to evaluate the suitability of a non-commercial TRIS-lecithin (LC) extender and the effect of different concentrations of catalase (CAT) on motility, capacitation status (Chlortetracycline-assay) and zona pellucida (ZP) binding capacity of canine spermatozoa stored at +5 degrees C for 4 days. The sperm-rich fractions of the ejaculates of four stud dogs were divided into four aliqu...

The orientation of facial (fac) tris-cyclometalated iridium complexes in doped films prepared by vacuum deposition is investigated altering the physical shape and electronic asymmetry molecular structure. Angle-dependent photoluminescence spectroscopy Fourier-plane imaging microscopy show that roughly spherical fac-tris(2-phenylpyridyl)iridium (Ir(ppy)3) isotropic, whereas are oblate spheroids,...

Biochemicalical evidence is presented which demonstrates that the Neurospora crassa plasma membrane ATPase (ATP phosphohydrolase, EC 3.6.1.3) is an electrogenic pump. The electrical potential across the Neurospora plasma membrane, as monitored by [14C]SCN- uptake by isolated Neurospora plasma membrane vesicles, is markedly increased interior positive under conditions of ATP hydrolysis catalyzed...

Purified inside-out photosystem II vesicles with retained capacity for oxygen evolution and a simple polypeptide composition were found to be more sensitive to washing with tris(hydroxymethyl)aminomethane (Tris) at alkaline pH than right-side out thylakoids. This suggests that the thylakoid membrane limits the penetration of the active unprotonated form of Tris. The inhibition of photosynthetic...

Tris complexes of Ln3+ ions (Ln = La, Ce, Pr) with triphenyl-substituted cyclopentadienyl ligands were studied by optical spectroscopy. Emission both 5d - 4f and transitions was observed for Pr3+ complex. It found that the strength crystal field formed in tris is comparable to case sulfides, as a result, red luminescence Ce3+ compound. The quantum yield photoluminescence 20% latter.

The imine podands tris[(2-nitrobenzylidene)aminoethyl]amine and tris[(2-nitrobenzylidene)aminopropyl]amine both stabilize copper(I), forming {tris[(2-nitrobenzylidene)aminoethyl]amine-kappa4N}copper(I) perchlorate acetonitrile disolvate, [Cu(C27H27N7O6)]ClO4.2CH3CN, (II), and {tris[(2-nitrobenzylidene)aminopropyl]amine-kappa4N}copper(I) perchlorate, [Cu(C30H33N7O6)]ClO4, (VI), respectively. The...

Lipid analogues carrying three nitrilotriacetic acid (tris-NTA) head groups were developed for the selective targeting of His-tagged proteins into liquid ordered (lo ) or liquid disordered (ld ) lipid phases. Strong partitioning into the lo phase of His-tagged proteins bound to tris-NTA conjugated to saturated alkyl chains (tris-NTA DODA) was achieved, while tris-NTA conjugated to an unsaturate...