The phrase 'an essential actor' is correct and usable in written English.
It could be used to refer to a person who plays an important role in a given situation. For example, "John has been an essential actor in helping to coordinate relief efforts in the aftermath of the hurricane."
The central bank is an essential actor in implementing that strategy but not its architect.
However, unlike the triple helix model, the quadruple helix concept while acknowledging the triple helix actors and their roles also considers civil society as an essential actor which can make critical input, such as definition of research problem and implementation of research findings, to collaborative projects (Afonso et al. 2012).
Lambert and Schaeffer (2010) used the case of the French competitiveness clusters in the electronic sector to show that by boosting its internal capacity to provide made-to-order technological solutions, an SME can become an essential actor in the production of knowledge needed for breakthrough innovation within a trans-industrial network.
"He was absolutely an essential actor in all of that," Bennet said.
AGO1 is both an essential actor and a target of miRNA and siRNA pathways.
This is the case for the homeobox gene Otx2, an essential actor of forebrain and head development.
Obama has the opportunity to ensure that the region continues to see the US as the essential actor – now more open and helpful than before.
Quakers are often lauded as essential actors in the pre-Civil War drama of the Underground Railroad, but not every Friend eagerly harbored escaping slaves.
With over 70% of greenhouse gas emissions influenced by local behaviours and investment choices, sub-national authorities, which are often responsible for making key decisions on the ground, will be essential actors in this process.
However there is increasing evidence that epigenetic regulations are essential actors that also control traits of agronomical relevance, such as plant adaptation to environmental constraints, and heterosis, a phenomenon extensively used to increase agronomical production, flowering time or fruit quality.
Third, beyond the confines of haemostasis and thrombosis, platelets are now acknowledged as essential actors of the immune response, reacting to infection and disturbed tissue integrity and contributing to inflammation, pathogen killing and tissue repair [16 21].
