Assertion: protein | /r/CapableOf | act as sphincter
Facets:
value: like gap junctions in animal cells
type: LOCATION
value: to regulate the passage of materials
type: PURPOSE
Source sentences:
text: The neck region is proposed to contain several, spoke-like protein subunits that are located both extracellularly and between the desmotubule and the plasmalemma (linking these two structures), and these proteins can then act as a sphincter to regulate the passage of materials through the plasmodesmata, much like gap junctions in animal cells (reviewed by Robards and Lucas, 1990):