Of course the cost of the catalyst is offset if turnover numbers are high.

Why are turnover numbers so inconsistent?

Turnover number has two related meanings:

On the other hand the catalytic turnover number for this reaction is much larger than can be obtained with classical organic asymmetric catalysts.

The turnover number can be visualized as the number of times each enzyme molecule carries out its catalytic cycle per second.

The turnover number for RNA polymerase II is 0.16 s subject to concentration.

The following year, he showed moderate improvement by upping his TD production, but failed to improve his turnover numbers (recording a career-high 19).

Turnover number, is the number of moles of substrate that a mole of catalyst can convert before becoming inactivated.

Both types of assembly are under development to improve their stability and increase their turnover numbers, both necessary for constructing a sturdy, long-lived solar fuel cell.

One of the earliest values of the turnover number was 3 x 10 (molecules of acetylcholine) per minute per molecule of enzyme.

Bio-inspired manganese clusters have been shown to possess water oxidation activity when adsorbed on clays together with ruthenium photosensitizers, although with low turnover numbers.

VMAT1 has a lower turnover number and a lower affinity for most monoamine substrates than VMAT2.

If the molecular weight of the enzyme is known, the turnover number, or μmol product sec μmol of active enzyme, can be calculated from the specific activity.

Likewise, catalase has one of the highest turnover numbers of all enzymes; one catalase molecule can convert millions of molecules of hydrogen peroxide to water and oxygen each second.

Therefore, the turnover number for the RNAseH activity needed to reach the detection limit in our assays is about 43,000-fold less than the 40 cycles observed for the polymerase activity under very similar conditions.

Despite the claims of coaching staffs, a look at turnover numbers over the years suggests that there is little in a team's style of play or emphasis on avoiding mistakes that affects the number of times it turns the ball over.

In other chemical fields, such as organometallic catalysis, turnover number (abbreviated TON) is used with a slightly different meaning: the number of moles of substrate that a mole of catalyst can convert before becoming inactivated.

This reduction is achieved with extremely high turnover number (albeit moderate enantioselectivity) through the use of a specialized catalyst system consisting of [Ir(COD)Cl], modified Josiphos ligand 3, and acid and iodide additives.

An ideal catalyst would have an infinite turnover number in this sense, because it wouldn't ever be consumed, but in actual practice one often sees turnover numbers which go from 100 up to 40 million for Catalase.

One of the most efficient and effective catalysts ever developed for the asymmetric hydrogenation of ketones, with a turnover number (TON) up to 4,550,000 and ee up to 99.9%, uses another iridium(I) system with a closely related tridentate ligand.

The different data fields cover information on the enzyme's nomenclature, reaction and specificity, enzyme structure, isolation and preparation, enzyme stability, kinetic parameters such as Km value and turnover number, occurrence and localization, mutants and engineered enzymes, application of enzymes and ligand-related data.

To evaluate this possibility, it is useful to compare the enzymatic turnover number for the polymerase activity in the trans reaction with the turnover number for the RNAseH activity that would be needed to reach the detection limit in our assays.