Journal
VISION RESEARCH
Volume 48, Issue 3, Pages 413-423Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.visres.2007.08.022
Keywords
photoreceptor; connecting cilium; microtubule; intraflagellar transport; kinesin; rhodopsin
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Intraflagellar transport (IFT) of a similar to 17S particle containing at least 16 distinct polypeptides is required for the assembly and maintenance of cilia and flagella. Although both genetic and biochemical evidence suggest a role for IFT in vertebrate photoreceptors, the spatial distribution of IFT proteins within photoreceptors remains poorly defined. We have evaluated the distribution of 4 IFT proteins using a combination of immunocytochemistry and rod-specific overexpression of GFP tagged IFT proteins. Endogenous IFT proteins are most highly concentrated within the inner segment, around the basal body, and within the outer segment IFT proteins are localized in discrete particles along the entire length of the axoneme. IFT52-GFP and IFT57-GFP mimicked this pattern in transgenic Xerzopus. (c) 2007 Elsevier Ltd. All rights reserved.
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