Promiscuous activities are often inefficient because new substrates with different steric and electronic properties do not bind optimally relative to catalytic groups in the active site, and/or because additional chemical steps not required for the original activity are needed.
The original activity, Mr. Duncan said Sunday, "wasn't worded quite correctly".
The reactor could be operated for over 21 days retaining about 70% of the original activity.
It is thought that during recall of past events the original activity pattern in the hippocampus is re-established via a process that is known as "pattern completion".
T. thioparus could retain 99% of the original activity in both systems, after ten days passing the fabrication.
Moreover, deactivated materials could be reactivated to the original activity in an air-flow at 673 K several times.
During the summit, each group should continue to represent the interests of the government, workers and business leaders of China and the United States, as they did in the original activity.
It retains 70% of the original activity after 10 cycles of 15 min incubation with substrate (polymeric xylan) at 60 °C.
