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Journal of Cell Science, Vol 109, Issue 7 1803-1812, Copyright © 1996 by Company of Biologists
JOURNAL ARTICLES |
MA Hallett, JL Delaat, K Arikawa, CL Schlamp, F Kong and DS Williams
School of Optometry, Indiana University, Bloomington 47405, USA.
Guanylate cyclases play an essential role in the recovery of vertebrate photoreceptor cells after light activation. Here, we have investigated how one such guanylate cyclase, RetGC-1, is distributed within light- and dark-adapted rod photoreceptor cells. Guanylate cyclase activity partitioned with the photoreceptor outer segment (OS) cytoskeleton in a light-sensitive manner. RetGC-1 was found to bind actin filaments in actin blot overlays, suggesting a mechanism for its association with the OS cytoskeleton. In retinal sections, this enzyme was immunodetected only in the OSs, where it appeared to be distributed throughout the disk membranes.
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