The phrase "appears to be constraining" is correct and usable in written English.
It can be used when discussing something that seems to limit or restrict options or actions.
Example: "The current policy appears to be constraining the team's ability to innovate and explore new ideas."
Alternatives: "seems to be limiting" or "looks to be restrictive."
Although institutional stability appears to be less problematic than in its South American neighbors, the widespread neoliberal vision embedded to the Chilean society appears to be constraining the role of formal institutions and restricting the development and enforcement of regulations and standards.
Based on the analyses of fungal growth and changes in host gene expression during the resistance response, a key mechanism of resistance appears to be constraining the growth of the pathogen through rapid and extensive reprogramming of the S. lycopersicoides transcriptome.
For instance, as Tomasello 2003 argues, children's early linguistic theorizing appears to be constrained by their inborn abilities to share attention with others and to discern others' communicative intentions.
Thus, such visual stimuli give rise to a retinotopically mapped response that appears to be constrained to a single cortical area.
However, the most interesting aspect of the gag-PR-GPY/F variability is that it appears to be constrained by the bio-distribution of Ty3/Gypsy LTR retroelements.
The functions of the lncRNAs remain largely unknown but their evolution appears to be constrained by purifying selection, albeit relatively weakly.
Instead of accumulating new character states as new lineages arise, the number of character states appears to be constrained in most empirical data sets (Wagner, 2000).
Growth is eventually blocked by the myoepithelial cells reestablishing coverage of the nascent lumenal branch, suggesting some form of growth constraint, much as growth of the pharyngeal glands appears to be constrained by surrounding myoepithelial cells (Ewald et al. 2008).
Amino acid sequence evolution in ospA and ospB appears to be constrained because synonymous changes greatly exceed nonsynonymous changes (dN ospA/dS ospA = 0.334; dN ospB/dS ospB = 0.303).
