The second is the dynamics, namely, how it is determined which nodes are active at any one time, that is, the genes that are expressed, and what determines the level of activity at an active node.
Human ligases require ATP and Mg2+ for activity, and their mechanism involves three distinct steps: (1) enzyme adenylation at an active site lysine, (2) adenylyl transfer to the 5′-phosphate of the nick, and (3) nucleophilic attack of the 3′-OH to seal the nick and release AMP.
Blair has made a series of interventions hinting at an active return to politics.
We're looking at an active membership that is involved in the conversation of film and new film-makers.
Mr. O'Brien's death was the first of a worker at an active Metropolitan Transportation Authority construction site in recent memory, officials said.
The label, available in New York at Zao, held its spring/summer 2001 debut last Saturday in Los Angeles at an active subway stop, where a 150-foot escalator doubled as catwalk.
Some colleagues had similar thoughts this month when Firefighter Blackwell responded in a search-and-rescue mission at an active fire in a fifth-floor apartment in the Bronx.
The difficult process of getting to the Underbelly space — which involves waiting at an active station's platform until it's empty, slipping from it into the damp and very dirty no man's land beyond, and traversing that to get to the old station's entrance — suggested to PAC and Workhorse how challenging the project would be.
Let's look at an active story.
Field-scale kinetic tests were conducted at an active coal mining complex.
At an active fault in Japan, an M7 earthquake occurs about once in a 1000 years to several thousand years.
