Tris propane

Bis(2-methoxyethoxy)ethane, t282 Bis-tris propane, b237... 

N-(2-Acetamido)-2-aminoethane-sulfonic acid (ACES ) 1,3-Bis[tris(hydroxymethyl)-methylaminolpropane (BIS-TRIS PROPANE) 3-(N-Morpholino)-2-hydroxy-propanesulfonic acid (MOPSO)... 

BlS-Tris propane (1.3-bis[tris (hydroxymethyl)-methylamino] propane) (pK2)... 

Why should l-[tris propan-2-yl) ilyl]pyrrole react with jV-bro-mosuixinimide (a source of Br,) to give 3-bromo-l-[tris(propan-2-yt)silyl]pyrrole, rather than the 2-isomer ... 

The kinetics of the hydrolysis of di(2,4-dinitrophenyl) phosphate (DDNPP) were studied in basic solutions buffered with Bis-Tris propane (BTP) in the presence of La3+, Sm3+, Tb3+, and Er3+. Two equivalents of the 2,4-dinitrophenolate ion were liberated for each equivalent of DDNPP and the reaction showed first-order kinetics. Potentiometric titrations showed the formation of dinuclear complexes such as [Ln2(BTP)2(OH) ](6 " i, with values of n varying as a function of pH for all studied metals. Hence the catalytic effect depends on the formation of dinuclear lanthanide ion complexes with several hydroxo ligands.97... 

Data presented as KIE Arrhenius plots (see explanation and description under Methods). All the experiments were carried out in lOmM bis-tris propane buffer pH 9.0 as described under Methods. 

Determination of enthalpy of activation requires measurements of kcat under full substrate saturation over a significant temperature range. The initial velocity measurements were performed under pure oxygen atmosphere and with 0.5 M 2-deoxyglucose (> 8 Km) in 10 mM bis-tris propane buffer pH 9 as described under... 

Lysine-labelled tryptophanase was prepared by Incubating the enzyme with 100-fold molar excess of 2,2,5,5-tetramethyl-3-pyrrolin-1-oxyl-3-carboxylic acid N-hydroxysuccinimide ester (Eastman Kodak Company) in 10 mM bis-tris-propane (Sigma), pH 8 (20% v/v... 

Co(H2N—CH2—CH(CH3)—NH2)3](C104)3 tris(propane-l,2-diamine)cobalt(III) perchlorate... 

Figure 6-7 Cyclic voltammograms on a 4,4 -dithiodipyridme modified gold electrode of a 200 pM P. denitrificans CCP solution in lOOmM bis-tris-propane, lOOmM KNO3, pH 6.3. Panel A High potential region. Panel B Low potential region. (1) Calcium loaded CCP (incubated with ImM Ca ) (2) Calcium depleted CCP (EDTA treated). Scan rate, 20mVs , temperature, 22+1 °C. The potential axis is defined versus the normal hydrogen electrode (NHE) (adapted from [22]).

BIS TRIS PROPANE I,3-5is[tris(hydroxymethyI)methyIamino]propane 282.3 6.8 6.3—9.5... 

After each activity measurement, the nanoencapsulated-enzyme samples were transferred with a pipet from the reaction vessel back to a centrifuge tube for reusability analyses. The samples were centrifuge washed, as described earlier, for three times, in 10 mM bis-tris propane, pH 7.2, and the supernatant was decanted and retained for analysis of enzyme leakage. The final washed sample was then stored, decanted dry, in its tube at 6 C until next trial. 

Figure 1, Percent relative enzymatic activity of the nanoencapsulated preparation gelation time to free OPAA in 50 mMbis-tris propane, pH 8. The nanoencapsulated preparation contained TMOS + KH MS + OPAA. The activity was measured at initial mixture (Gl = 0 min), 15 min later (G2 = 15 min), and 30 min later (G3 = 30 min). Standard condition was 50 mM bis-tris propane, pH 8. Free enzyme in standard condition is 1013 U/mg.

Figure 2. Comparison of the nanoencapsulated OPAA activity in different solvents relative to free OPAA in 50 mM bis-tris propane, pH 8. The nanoencapsulated OPAA samples were TMOS-F50-OPAA, TMOS-PEG-OPAA, MTMS-PEG-OPAA, 3MTMS-F50-OPAA, 3MTMS-wet gel, 3MTMS-OPAA, and MTMS-OPAA. The solvents studied were 20% hexane (vertical bars), 20% acetone (shaded bars), 20% methanol (horizontal bars), 20% dimethyl-formamide (unshaded bars), and control buffer, 50 mMbis-tris propane (diagonal bars). The activity of free OPAA in 50 mMbis-tris propane, pH 8...

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