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Mol Cell Biochem. 2010 Jan;334(1-2):207-14. doi: 10.1007/s11010-009-0320-1. Epub 2009 Nov 14.

Diversity of sensory guanylate cyclases in teleost fishes.

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Biochemistry Group, Institute of Biology and Environmental Science, Faculty V, Carl von Ossietzky University Oldenburg, 26111 Oldenburg, Germany.


Teleost fishes like medaka fish (Oryzias latipes), zebrafish (Danio rerio), and pufferfish (Fugu rubripes) contain in their genomes a larger number of guanylate cyclases and guanylate cyclase-activating proteins than mammals. Based on amino acid sequence alignments a group of transmembrane sensory guanylate cyclases can be identified, which are mainly if not exclusively expressed in sensory organs like the retina and olfactory tissue. Retina specific guanylate cyclases and guanylate cyclase-activating proteins in the zebrafish show dynamic changes in their spatial-temporal expression patterns and transcripts of the corresponding genes appear coincidently with the beginning of cone cell maturation at 3 days post-fertilization. Expression patterns of the guanylate cyclase signaling systems during larval development are correlated with the special habitat challenges of zebrafishes in the wild.

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