The phrase "assuming a key" is correct and usable in written English.
It can be used in contexts where you are considering or presuming the existence or importance of a key element or factor in a situation.
Example: "Assuming a key is present, we can proceed with the next steps in the analysis."
Alternatives: "presuming a key" or "taking a key for granted".
Styles reporter John Koblin heads to the television beat, assuming a key industry perch recently vacated by veteran writer Bill Carter, who took a buyout.
The lateral meniscus also moves with the lateral condyle, assuming a key role in distributing tibiofemoral compressive force [ 8].
Although participants were more likely to agree that general practitioners in rural or remote settings could confirm a diagnosis of FASD compared with all general practitioners, there was only limited support for general practitioners assuming a key role in diagnosis.
The peculiarity of fungal AA9 LPMOs is their action in concert with cellobiose dehydrogenases (CDHs) since their association resulted in redox-mediated glycosidic bond cleavage in cellulose, assuming a key role of this oxidative system in fungi [ 5, 6, 8, 14, 19].
He probably doesn't know it, but a black Affenpinscher called Rico has this week assumed a key supporting role in the sporting life of a nation.
The Prime Minister appeared apprehensive of going too far – citing the need to find some solution to the Syria crisis, in which Russia has assumed a key role.
It thought prime minister David Cameron "appeared apprehensive of going too far, citing the need to find some solution to the Syria crisis, in which Russia has assumed a key role".
Sport mega-events have taken on an elevated profile and assumed a key role as urban and regional development strategies.
When an incident occurs, the timely estimate of its duration assumes a key role in the overall incident management process.
It used to be that many of them simply assumed a key point, which is that transactions were entered into for nontax reasons.
Thirdly, HOS can assume a key part in identifying and portraying the sort of non-linearity in a framework from its signals [16].
