The phrase "a conserved structural feature of" is correct and usable in written English.
It can be used in scientific or technical contexts, particularly in biology or biochemistry, to describe a characteristic that remains unchanged across different species or systems.
Example: "The protein exhibits a conserved structural feature of a helix-turn-helix motif, which is crucial for its function."
Alternatives: "a preserved structural characteristic of" or "a retained structural element of".
Furthermore, between NTM and CTM (particularly between TMs 6 and 7), a long amphipathic helix (~26 residues, termed α6-7) represents a conserved structural feature of RND transporters (Fig. 2) (Murakami et al. 2002; Sennhauser et al. 2009; Gong et al. 2016).
A conserved structural feature of polymerase active sites is the presence of two or three acidic residues (depending on the class of polymerases) which coordinate the positioning of the metal ions [2].
Since the N-terminal extension domain (NTE) is a conserved structural feature of HMT-1 proteins, unique to this half-transporter family, we expected that it may be critical for HMT-1 function.
A conserved structural feature within the G domain of all small GTPases are the switch I and switch II regions, where the major conformational changes upon GTP binding and hydrolysis take place.
The two binding modes originate from duplicated F-hand sequence motifs, a conserved structural feature found among type-I dockerins (Pagès et al., 1997).
We now know that this is a very conserved structural feature of αβ TCR molecules and evolved with the molecular speciation of CD3γ and CD3δ from a common precursor molecule several hundred million years ago (Kim et al., 2010).
Thus, these binding locations may represent an evolutionarily conserved structural feature of several viral polymerases that could be exploited for the development of small molecule therapeutics.
Taken together, these results suggest that the interaction of the globular Domain 1 with the β-helical stem mediated by loop 165 is an overall conserved structural feature of SPATE proteins essential for the efficient secretion of the passenger domain.
The "nucleophilic elbow" is the most conserved structural feature of the αβ hydrolase fold [ 38].
In silico analysis of the C. elegans genome identified 33 putative globin genes in this species using a robust alignment procedure based on conserved structural features of the classical globin fold.
Like the elements of secondary structure, they are born of the need to satisfy hydrogen bonding but, in achieving this, they become key, conserved structural features of many well-known protein architectures.
