The phrase "a key structural element" is correct and usable in written English.
It can be used when discussing important components or features that contribute to the overall structure of something, such as a building, a piece of writing, or a system.
Example: "In the design of the new library, a key structural element is the open atrium that allows natural light to flood the interior."
Alternatives: "an essential component" or "a fundamental part".
Overall, our results indicate that the zinc binding motif in the RQC domain of RECQ1 is a key structural element that is essential for the structure-functions of RECQ1.
A key structural element for inter-head coordination is the neck linker (NL), which connects the heads to the stalk.
For the deposited SiCN films, the nature of carbon bonding was identified as a key structural element correlating to critical barrier film properties such as leakage and hardness.
However, glass is a brittle material and weak in tension, making it less evident to function as a key structural element.
A key structural element, namely a terminal –NH2 group on the thiosemicarbazone moiety, was found to be an important common feature of the most active HbO2 oxidising complexes that were investigated.
Conservation of these contacts in AMPA and kainate receptors indicates that they are important determinants of dimer stability and that the dimer interface is a key structural element in the gating mechanism of these glutamate receptor families.
Two decades after the emergence of the notion of the non-biodegradability of FQs, briefly reviewed by (Wetzstein et al. (2009)), fungal degradation of all key structural elements of a FQ, in particular of the aromatic core, now has been proven.
Hence, two decades after the emergence of the notion of the non-biodegradability of fluoroquinolones, fungal degradation of all key structural elements has been proven.
By mapping out the interactions between TUT7 and pre-miRNA, we show that the overhang of a pre-miRNA is the key structural element that TUT7 recognizes.
We find that the overhang of a pre-miRNA is the key structural element that is recognized by TUT7 and its paralogues, TUT4 (ZCCHC11) and TUT2 (GLD2/PAPD4).
