These proteins are found in the budding yeast Saccharomyces cerevisiae; they form "neck filaments" between a mother cell and its growing bud, and help polarize protein distribution between the two. These proteins ...
A) can polymerize to form filaments and sheets.
B) bind GTP.
C) are also involved in contractile ring formation during cytokinesis in animal cells.
D) form filaments that are thought to be nonpolar.
E) All of the above.