severin is a 40-kda ca2+-activated protein from dictyostelium that rapidly fragments and disassembles actin filaments in vitro ( s.s. brown , k. yamamoto , and j.a . spudich , j. cell biol . 93 , 205-210 , 1982 ; and k. yamamoto , j.d . pardee , j. reidler , l. stryer , and j.a . spudich . j. cell biol . 95 , 711-719 , 1982 ) .
C0025979
actin filaments
C0007634
cell