title: [Role of secondary phosphoinositide messengers in storage of Ca2+ ions in retinal rod microsomes].
abstract: The influence of guanosine-5'-triphosphate and secondary messengers forming in rod outer segment membranes during light-stimulated hydrolysis of phosphoinositides on the ATP-dependent Ca(2+)-uptake in microsomes of the retinal rod inner segment was studied. The water-soluble cytoplasmic components of the retinal rod outer segment were shown to be capable of stimulating the Ca(2+)-pump of endoplasmic reticulum after light illumination. This process is likely to proceed with the participation of 1,2-diacylglycerol localized in microsome membrane.
authors.affiliation: Institute of Photobiology, Belorussian Academy of Sciences, ul. Academicheskaya 27, Minsk, 220072 Belarus.
authors.forename: V P
authors.initials: VP
authors.lastname: Emel'ianova
authors.forename: L A
authors.initials: LA
authors.lastname: Baranova
authors.forename: I D
authors.initials: ID
authors.lastname: Volotovskiĭ
mesh_terms: D000255:Adenosine Triphosphate / Q000378:metabolism; D000818:Animals; D002118:Calcium / Q000378:metabolism*; D002413:Cations, Divalent; D006160:Guanosine Triphosphate / Q000502:physiology; D008861:Microsomes / Q000378:metabolism*; D010716:Phosphatidylinositols / Q000502:physiology*; D017948:Retinal Rod Photoreceptor Cells / Q000378:metabolism*; D015290:Second Messenger Systems / Q000502:physiology*
chemical_list: D002413:Cations, Divalent; D010716:Phosphatidylinositols; D006160:Guanosine Triphosphate; D000255:Adenosine Triphosphate; D002118:Calcium