RAB21 GEFs exchange GTP for GDP on RAB21 (Drosophila melanogaster)
rab21 gefs exchange gtp for gdp on rab21 (drosophila melanogaster)
RAB21 GEFs exchange GTP for GDP on RAB21 (Drosophila melanogaster)
rab21 gefs exchange gtp for gdp on rab21 (drosophila melanogaster)