The phrase "act as key" is not correct in standard written English.
It may be intended to convey the idea of serving an important role or function, but it lacks clarity and proper grammatical structure.
Example: "In this project, the new software will act as key to improving our efficiency."
Alternatives: "serve as crucial" or "function as essential".
AQPs can act as key candidate molecules to confront this issue.
We hypothesize that they act as key sites of processes and fluxes with notable effects on overall system behaviour.
Estrogens act as key factors in prostate biology, cellular proliferation and differentiation as well as cancer development and progression.
Ecosystems provide a variety of ecosystem services (ES), which act as key linkages between social and ecological systems.
For example, microtubules give shape to cells, serve as intracellular transport tracks, and act as key elements in important cellular structures such as axonemes and mitotic spindles.
In vivo lineage tracing has helped establish a variety of novel cellular culprits that may act as key drivers of the fibrotic response.
Using a multiple-survey research design, our empirical study shows that unit managers and co-workers act as key social referents.
GPBP/CERT are widely distributed in the central nervous system where they act as key factors for normal brain development and homeostasis.
These structures show plainly that 23 S rRNA nucleotides A2058 and A2059 are located accessibly on the surface of the tunnel wall where they act as key contact sites for macrolide binding.
Thus, understanding the post-fire residual behavior of welded hollow spherical joints, which act as key connection elements, is crucial for fire damage assessment of the space lattice structures.
Hypoxia-inducible factors 1 and 2 (HIF-1 and HIF-2, respectively) are oxygen-sensitive heterodimeric transcription factors, which act as key mediators of cellular adaptation to low oxygen.
