Phospholipase D (PLD) is one of the intracellular signal transduction enzym
es and plays an important role in a variety of cellular functions. We inves
tigated the expression and cellular localization of the PLD isozyme PLD1 in
the rodent retina. Western blot analysis showed the presence of PLD1 at th
e protein level in the rat, mouse and guinea pig retinas. PLD1 immunoreacti
vity was localized in all Muller cells. Thus, PLD1 protein appears to be im
portant in the functions of these cells in the rodent retina. (C) 2001 Publ
ished by Elsevier Science B.V.