The phrase "altering activity of" is correct and usable in written English.
It can be used in contexts where you are discussing changes or modifications to a specific activity or process, often in scientific or technical writing.
Example: "The researchers focused on altering the activity of the enzyme to improve its efficiency in the reaction."
Alternatives: "modifying the function of" or "changing the operation of".
To evaluate the effects of altered IIS on growth rate and the timing of metamorphosis, we began by altering activity of genes of the protein kinase A (PKA) pathway within the insulin producing cells (IPCs).
Now scientists have discovered that, at least in mice, the pernicious protein may fail in its task of helping to loop a stretch of DNA, altering activity of another key protein.
Although inhibition of calcineurin results in immunosuppression, altering activity of NFAT will also impact regulation of INS1 gene transcription.
Significant associations represent variants that may have a direct effect on the transcription rate of nearby genes, likely by altering activity of cis-regulatory elements.
Polymorphisms in the GST genes, such as GSPT1 (rs1695), affect the ability to respond to excessive oxidative stress by altering activity of the GST enzymes [ 45].
Altering activity of the small GTPase RhoA and its effector kinase ROCK altered HIF-α-driven luciferase activity in the absence and presence of PTH.
Consumption of crude khat extract or its alkaloid fraction preceding stress has been shown to produce oxidative stress in rats by altering activities of serum antioxidant enzymes [ 6].
In this regard, potential genetic factors would also include altered activity of molecules cleaving and activating TNFα like the TNF converting-enzyme [22].
Is there altered activity of the extensor muscles in chronic mechanical neck pain?
Increasing evidence shows that altered activity of MTases may cause aberrant DNA methylation, which in turn may lead to malignant transformation, and ultimately to cancer.
Both PV-positive basket cells (BCs) and SOM-positive Martinotti cells (MCs) form disynaptic inhibitory microcircuits with pyramidal neurons that enable them to alter activity of surrounding pyramidal cells5,16.
