"alter function" is correct and can be used in written English.
It is generally used to denote a change in the functionality of something. Example: We had to alter the function of the fuse box to make it compliant with the new regulations.
SNAP was trained on literature-derived [ 16] mutants that are either functionally similar to the wild-type (neutral) or alter function (effect) in either direction (decrease and increase of function).
Moreover, functional assays using Saccharomyces cerevisiae revealed that the Y424H substitution did not alter function of CHEK2 protein.
They may alter function, such as increasing or decreasing their sensitivity, or they may increase or decrease in actual numbers.
A number of sites are phosphorylated by GRK, but mutation of those sites did not alter function, desensitization, arrestin recruitment, or internalization35.
Two of the positive selected sites (PSG), P48S and E222K, are also unique substitutions at fixed sites and Polyphen2 (PP2) analysis predicts them to alter function.
Although dimethyl sulfoxide (Me2SO) is generally regarded as a safe cryoprotectant, even low levels may alter function of repopulating cells.
Relationships between altered shape and altered function were evaluated via correlations between atlas-based shape and wall motion scores.
All showed altered function, but the nature of the alterations varied between the tested strains.
Now there is growing recognition of the medical reality of PTSD, including brain scans showing altered function.
Therefore, altered function of OPC processes following Nf1 loss may have substantial effects on their cellular activities.
The unaligned ECs in disturbed flow fields manifest altered function and reduced survival that promote lesion formation.
