The British Herpetological Society

The Herpetological Journal is the Society's prestigious quarterly scientific journal. Articles are listed in Biological Abstracts, Current Awareness in Biological Sciences,Current Contents, Science Citation Index, and Zoological Record.

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pdf 02. Crystallins in lenses of gekkonid lizards (Reptilia, Gekkonidae)

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Open Access

pp.298-304

Authors: Beate Röll

Abstract: The ocular lenses of the Gekkonidae differ in their crystallin compositions. The lenses of all species investigated contain variable amounts of α-, β-, γ-, and t-crystallins, which are commonly found in lenses of various vertebrates. Additionally, in lenses of the distantly related genera Phelsuma and Lepidodactylus another crystallin has been found which is a 38 kDa monomer and comprises about 20% of the total amount of crystallins. All other gekkonid species investigated, both nocturnal and diurnal, do not possess this crystallin. This distribution is highly surprising. It neither supports a possible correlation between similarity of crystallin composition and similarity of habits, nor a possible correlation between crystallin composition and phylogenetic relationship. Closer examination of the biochemical properties of the 38 kDa 'gecko' crystallin and comparison with other !axon-specific crystallins, especially the Ecrystallin of some other sauropsids, leads to the conclusion that this 38 kDa crystallin may be a so far undescribed novel type of crystallin

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