This is similar to Arnold Schoenberg's idea that individual notes have a structural function.
Some genes don't do any regulation; they perform a structural or metabolic function and only receive input from the regulators.
The structural and semantic functions of the markup remain identical in each case.
Sometimes the secondary development serves a rather mechanical structural function.
These systems can have just a structural function, just a draining function or both.
But it also served a structural function, providing an architectural niche to hold the image of the saint.
This category of molecules is important for many forms of life, serving both structural and metabolic functions.
They supply nutrients to the surrounding neurons and also have some structural function.
Other proteins have structural or mechanical functions, such as in muscle and in cells.
Other wood supports are visible and serve both decorative and structural functions.