Immunolocalization of PKC zeta in rat photoreceptor inner segments.

Journal Article

We have utilized several peptide specific antisera directed against the C-terminals (Wetsel et al, 1992) of several protein kinase C (PKC) isozymes (alpha, beta 1, beta 11, gamma, delta, epsilon, zeta) to delineate the cellular localization of these PKC isozymes in rat retina. Antisera against PKC beta 1, beta 11, gamma, delta and epsilon were non-reactive in frozen rat retina sections, whereas, anti PKC alpha was strongly reactive with the outer plexiform, inner plexiform and nerve fiber cell layers. The most specific localization of immunoreactivity was observed with PKC zeta, which reacted strongly and exclusively with photoreceptor inner segments, but not outer segments. Immunoblot analysis of whole rat retina homogenate showed that anti-PKC alpha recognized an antigen of approximately 80kD and anti-PKC zeta recognized a approximately 72kD protein. Immunolocalization of PKC zeta to photoreceptor inner segments and possible functional significance are discussed.

Full Text

Duke Authors

Cited Authors

  • Ghalayini, AJ; Koutz, CA; Wetsel, WC; Hannun, YA; Anderson, RE

Published Date

  • February 1994

Published In

Volume / Issue

  • 13 / 2

Start / End Page

  • 145 - 150

PubMed ID

  • 8194361

International Standard Serial Number (ISSN)

  • 0271-3683

Language

  • eng

Conference Location

  • England